Men at Higher Risk for Mild Memory Loss Than Women

ST. PAUL, Minn. – Men may be at higher risk of experiencing mild cognitive impairment (MCI), or the stage of mild memory loss that occurs between normal aging and dementia, than women, according to a study published in the January 25, 2012, online issue of Neurology®, the medical journal of the American Academy of Neurology.

“These results are surprising, given that women generally have higher rates of dementia than men,” said study author R.O. (Rosebud) Roberts, MB ChB, MS, of the Mayo Clinic in Rochester, Minn., and a member of the American Academy of Neurology. “The risk of MCI in men and women combined was high in this age group of elderly persons. This is disturbing given that people are living longer, and MCI may have a large impact on health care costs if increased efforts at prevention are not used to reduce the risk.”

For the study, a group of 1,450 people from Olmsted County, Minn., between the ages of 70 and 89 and free of dementia at enrollment underwent memory testing every 15 months for an average of three years. Participants were also interviewed about their memory by medical professionals. By the end of the study period, 296 people had developed MCI.

The study found that the number of new cases of MCI per year was higher in men, at 72 per 1,000 people compared to 57 per 1,000 people in women and 64 per 1,000 people in men and women combined. MCI with memory loss present was more common at 38 per 1,000 people than MCI where memory loss was not present, which affected 15 per 1,000 people. Those who had less education or were not married also had higher rates of MCI.

“Our study suggests that risk factors for mild cognitive impairment should be studied separately in men and women,” said Roberts.

Another finding of interest in the study showed that among people who were newly diagnosed with MCI, 12 percent per year were later diagnosed at least once with no MCI, or reverted back to what was considered “cognitively normal.” Roberts said the majority of people with MCI, about 88 percent per year, continue to have MCI or progress to dementia.

The study was supported by the National Institutes of Health, the Robert Wood Johnson Foundation, the Robert H. and Clarice Smith and Abigail van Buren Alzheimer’s Disease Research Program and was made possible by the Rochester Epidemiology Project.

The American Academy of Neurology, an association of 24,000 neurologists and neuroscience professionals, is dedicated to promoting the highest quality patient-centered neurologic care. A neurologist is a doctor with specialized training in diagnosing, treating and managing disorders of the brain and nervous system such as Alzheimer’s disease, stroke, migraine, multiple sclerosis, brain injury, Parkinson’s disease and epilepsy.

Released: 1/17/2012

Source: American Academy of Neurology

Related Link:

http://www.newswise.com/articles/study-men-at-higher-risk-for-mild-memory-loss-than-women

Study of One Million Americans Shows Obesity and Pain Linked

Newswise — STONY BROOK, N.Y., January 26, 2012 – A clear association between obesity and pain – with higher rates of pain identified in the heaviest individuals – was found in a study of more than one million Americans published January 19 in the online edition of Obesity. In “Obesity and Pain Are Associated in the United States,” Stony Brook University researchers Arthur A. Stone, PhD., and Joan E. Broderick, Ph.D. report this finding based on their analysis of 1,010,762 respondents surveyed via telephone interview by the Gallop Organization between 2008 and 2010.

Previous small-scale studies have shown links between obesity and pain. The Stony Brook study took a very large sample of American men and women who answered health survey questions. The researchers calculated respondents’ body mass index (BMI) based on questions regarding height and weight. Respondents answered questions about pain, including if they “experienced pain yesterday.”

“Our findings confirm and extend earlier studies about the link between obesity and pain. These findings hold true after we accounted for several common pain conditions and across gender and age,” says Dr. Stone, Distinguished Professor and Vice Chair, Department of Psychiatry and Behavioral Science, Stony Brook University School of Medicine, and an expert on patient reported measures of health, pain, and well-being.

Sixty three percent of the 1,010,762 people who responded to the survey were classified as overweight (38 percent) or obese (25 percent). Obese respondents were further classified into one of three obesity levels as defined by the World Health Organization. In comparison to individuals with low to normal weight, the overweight group reported 20 percent higher rates of pain. The percent increase of reported pain in comparison to the normal weight group grew rapidly in the obese groups: 68 percent higher for Obese 1 group, 136 percent higher for Obese 2 group, and 254 percent higher for Obese 3 group.

“We wanted to explore this relationship further by checking to see if it was due to painful diseases that cause reduced activity, which in turn causes increased weight,” says Joan E. Broderick, Ph.D., Associate Professor in the Department of Psychiatry and Behavioral Science and School of Public Health at Stony Brook University, and lead investigator of a National Institutes of Health-funded study on how arthritis patients manage their own pain.

“We found that ‘pain yesterday’ was definitely more common among people with diseases that cause bodily pain. Even so, when we controlled for these specific diseases, the weight-pain relationship held up. This finding suggests that obesity alone may cause pain, aside from the presence of painful diseases,” Dr. Broderick explains.

Interestingly, the pain that obese individuals reported was not driven exclusively by musculoskeletal pain, a type of pain that individuals carrying excess weight might typically experience.

Drs. Broderick and Stone also suggest that there could be several plausible explanations for the close obesity/pain relationship. These include the possibility that having excess fat in the body triggers complex physiological processes that result in inflammation and pain; depression, often experienced by obese individuals, is also linked to pain; and medical conditions that cause pain, such as arthritis, might result in reduced levels of exercise thereby resulting in weight gain. The researchers also indicated that the study showed as people get older, excess weight is associated with even more pain, which suggests a developmental process.

Drs. Broderick and Stone believe that the study findings support the importance of metabolic investigations into the causes of pain, as well as the need for further investigation of the obesity—pain link in U.S. populations.

Released: 1/26/2012

Source:  Stony Brook University Medical Center

Related Link:

http://www.newswise.com/articles/study-of-one-million-americans-shows-obesity-and-pain-linked

Diet and Health..Plate Size Doesn’t Help Reduce Calories

Newswise — The size of one’s dinner plate does not help to curb energy intake or control portion sizes, according to a recent study conducted at Texas Christian University in Fort Worth.

“Smaller plates are often recommended as a way of controlling intake, but that simply isn’t an effective strategy,” said Meena Shah, senior researcher and professor of kinesiology at Texas Christian University in Ft. Worth. “There was no plate size, weight status, or plate size by weight status effect on meal energy intake.”

Researchers including Meena Shah, senior researcher, Rebecca Schroeder, lead researcher, and Walker Winn from Texas Christian University, and Beverley Adams-Huet from UT Southwestern Medical Center at Dallas examined 10 normal weight women and 10 overweight or obese women over two different days at lunch. Subjects were randomly assigned to consume lunch using either a small (21.6 cm) or large (27.4 cm) plate. The meal, which consisted of spaghetti and tomato sauce, was served in an individual serving bowl. Each subject was asked to self-serve the food from the bowl onto the assigned plate and instructed to eat until satisfied. The meal was consumed alone and without any distractions. During the second lunch, each subject went through the same procedure but using the alternative size plate.

“It is possible that plate size does not have an impact on energy intake because people eat until they are full regardless of what utensils they are using,” said Shah.

Plate size also did not affect ratings of palatability, hunger, satiety, fullness and prospective consumption in either normal weight or overweight/obese women.

“Those who were overweight/obese reported lower levels of hunger and prospective consumptions before the meals and felt less full after the meals compared to normal weight subjects despite no difference in energy consumption between two groups,” said Shah. “This suggests that overweight/obese individuals may have a lower ability to sense hunger and fullness than normal weight adults.”

The findings were published in the Journal of Human Nutrition and Dietetics in December.

Released: 1/18/2012

Source: Dick Jones Communications

Related Link:

http://www.newswise.com/articles/plate-size-doesn-t-help-reduce-calories-study-says

Researchers Find Powerful People Think They Are Taller Than They Really Are

Napoleon Bonaparte, the notoriously “short” French emperor, may have stood only 5 feet 6, but being a powerful military and political leader probably made him feel much taller, suggests a new study by an organizational behavior expert at Washington University in St. Louis.

Newswise — Napoleon Bonaparte, the notoriously “short” French emperor, may have stood only 5 feet 6, but being a powerful military and political leader probably made him feel much taller, suggests a new study by an organizational behavior expert at Washington University in St. Louis.

“Although a great deal of research has shown that more physically imposing individuals are more likely to acquire power, this work is the first to show that powerful people feel taller than they are,” says Michelle M. Duguid, PhD, assistant professor of organizational behavior at Olin Business School.

Duguid is co-author, with Jack Concalo, PhD, of Cornell University, of “Living Large: The Powerful Overestimate Their Own Height,” published in the current issue of the journalPsychological Science.

In a series of three experiments, the researchers found a definite correlation between feeling powerful and feeling tall, and even suggest that future research may want to examine whether employers should consider placing short high-ranking workers in higher offices to raise their psychological sense of power.

“Height is often used as a metaphor for power,” Duguid says. “Powerful people ‘feel like the big man on campus,’ and people ‘look up to them.’ We find that the psychological experience of power may cause individuals to feel taller than objective measurement indicates they really are.”

In the researcher’s first experiment, some participants were asked to recall an incident in which they had power over another individual while others were asked to recall an incident in which someone else had power over them.

They were then asked to estimate their size in relation to a pole that had been set precisely 20 inches taller than their actual heights.

Those who had been conditioned to feel ‘empowered’ thought the pole was nearer in height to them than those who’d been made to feel subordinate.

In the second experiment, two pairs of volunteers were asked to role play a scenario in which one was a manager and the other an ordinary worker.

They were then asked to give their exact heights in a questionnaire, with those having played the role of manager supplying exaggerated figures.

Finally, the participants were conditioned in the same way as they were in the first experiment, and then asked to choose an avatar in a second-life game that they thought best represented them. The more empowered volunteers consistently chose taller avatars.

“These findings may be a starting point for exploring the reciprocal relationship between the psychological and physical experiences of power,” Duguid says. “An interesting direction for future research would be to determine whether associations between power and size extend to other self-perceptions and self-categorization.”

Released: 1/17/2012

Source: Washington University in St. Louis

Related Link:

http://www.newswise.com/articles/powerful-people-think-they-are-taller-than-they-really-are

Study Debunks Stereotype that Men Think About Sex All Day Long

Newswise — COLUMBUS, Ohio – Men may think about sex more often than women do, but a new study suggests that men also think about other biological needs, such as eating and sleep, more frequently than women do, as well.

And the research discredits the persistent stereotype that men think about sex every seven seconds, which would amount to more than 8,000 thoughts about sex in 16 waking hours. In the study, the median number of young men’s thought about sex stood at almost 19 times per day. Young women in the study reported a median of nearly 10 thoughts about sex per day.

As a group, the men also thought about food almost 18 times per day and sleep almost 11 times per day, compared to women’s median number of thoughts about eating and sleep, at nearly 15 times and about 8 1/2 times, respectively.

The college-student participants carried a golf tally counter to track their thoughts about either eating, sleep or sex every day for a week. Each student was assigned to just one type of thought to record. Before receiving the tally counter, they had completed a number of questionnaires and were asked to estimate how often they had daily thoughts about eating, sleeping and sex.

Overall, a participant’s comfort with sexuality was the best predictor for which person would have the most frequent daily thoughts about sex.

“If you had to know one thing about a person to best predict how often they would be thinking about sex, you’d be better off knowing their emotional orientation toward sexuality, as opposed to knowing whether they were male or female,” said Terri Fisher, professor of psychology at Ohio State University’s Mansfield campus and lead author of the study. “Frequency of thinking about sex is related to variables beyond one’s biological sex.”

Correcting this stereotype about men’s sexual thoughts is important, Fisher noted.

“It’s amazing the way people will spout off these fake statistics that men think about sex nearly constantly and so much more often than women do,” she said. “When a man hears a statement like that, he might think there’s something wrong with him because he’s not spending that much time thinking about sexuality, and when women hear about this, if they spend significant time thinking about sex they might think there’s something wrong with them.”

The study appears online and is scheduled for publication in the January issue of the Journal of Sex Research.

The study involved 163 female and 120 male college students between the ages of 18 and 25 who were enrolled in a psychology research participation program. Of those, 59 were randomly assigned to track thoughts about food, 61 about sleep and 163 about sex. Most students were white and self-identified as heterosexual. The college-student sample made it comparable to previous research and involved an age group at which gender differences in sexuality are likely at their peak.

Before the thought-tracking began, the participants completed a number of questionnaires. These included a sexual opinion survey to measure a positive or negative emotional orientation toward sexuality (erotophilia vs. erotophobia); a sociosexual orientation inventory measuring attitudes about sex and tracking sexual behavior and levels of desire; a social desirability scale to measure respondents’ tendency to try to appear socially acceptable; and an eating habits questionnaire and sleepiness scale. They also were asked to estimate how many times in an average day that they thought about sleeping, eating and sex.

Researchers then gave each student a tally counter device and told those assigned to the sexual thoughts condition to click the device to maintain a count their of thoughts about sex. They were told to count a thought about any aspect of sex: sexual activity of any kind, fantasies and erotic images, sexual memories and any arousing stimuli.

Others were instructed to use the device to record thoughts about eating that included food, hunger, cravings, snacking or cooking, and thoughts about sleep that included dreaming, sleeping, napping, going to bed or needing rest.

The questions about food and sleep were designed to mask the true intent of the study’s focus on thoughts about sex, Fisher said. However, the results about these additional thoughts provided important information about differences in thinking among males and females.

“Since we looked at those other types of need-related thoughts, we found that it appears that there’s not just a sex difference with regard to thoughts about sex, but also with regard to thoughts about sleep and food,” she said. “That’s very significant. This suggests males might be having more of these thoughts than women are or they have an easier time identifying the thoughts. It’s difficult to know, but what is clear is it’s not uniquely sex that they’re spending more time thinking about, but other issues related to their biological needs, as well.”

And when all of those thoughts were taken into account in the statistical analysis, the difference between men and women in their average number of daily thoughts about sex wasn’t considered any larger than the gender differences between thoughts about sleep or thoughts about food.

In raw numbers, male participants recorded between one and 388 daily thoughts about sex, compared to the range of female thoughts about sex of between one and 140 times per day.

“For women, that’s a broader range than many people would have expected. And there were no women who reported zero thoughts per day. So women are also thinking about sexuality,” Fisher said.

The questionnaire data offered some additional clues about the influences on sexual thoughts. When all participants were analyzed together, those measuring the highest in erotophilia – or comfort with their sexuality – were the most likely to think more frequently about sex.

But when the analysis considered males and females separately, no single variable – erotophilia score, unrestrictive attitudes about sex or a lack of desire to be socially acceptable – could be defined as a predictor of how often men think about sex.

But for women, the erotophilia score remained a good predictor of more frequent sexual thoughts. On the other hand, women who scored high on the desire to be socially acceptable were more likely to think less frequently about sex.

“People who always give socially desirable responses to questions are perhaps holding back and trying to manage the impression they make on others,” Fisher explained. “In this case, we’re seeing that women who are more concerned with the impression they’re making tend to report fewer sexual thoughts, and that’s because thinking about sexuality is not consistent with typical expectations for women.”

The participants’ estimates about how often they thought each day about eating, sleeping and sex were all much lower than the actual number of thoughts they recorded. This suggested to Fisher that previous research in this area – especially on thoughts about sex – was weak because almost all previous studies were based on participants’ retrospective estimates about how often they thought about sex.

“There’s really no good reason that our society should have believed that men are thinking so much more about sex than women. Even the research that had been done previously doesn’t support the stereotype that men are thinking about sex every seven seconds,” she said.

Fisher conducted the research with undergraduate Ohio State-Mansfield students Zachary Moore and Mary-Jo Pittenger. Both have since graduated.

Released: 11/28/2011

Source: Ohio State University

Related Link:

http://newswise.com/articles/study-debunks-stereotype-that-men-think-about-sex-all-day-long

World Aids Update… Unparalleled global progress in HIV response but sustained investment vital

GENEVA, 30 November 2011—Global progress in both preventing and treating HIV emphasizes the benefits of sustaining investment in HIV/AIDS over the longer term. The latest report by the World Health Organization (WHO), UNICEF and UNAIDS Report on the Global HIV/AIDS Response indicates that increased access to HIV services  resulted in a 15% reduction of new infections over the past decade and a 22% decline in AIDS-related deaths in the last five years.

“It has taken the world ten years to achieve this level of momentum,” says Gottfried Hirnschall, Director of WHO’s HIV Department. “There is now a very real possibility of getting ahead of the epidemic. But this can only be achieved by both sustaining and accelerating this momentum over the next decade and beyond.”

Advances in HIV science and programme innovations over the past year add hope for future progress. In times of economic austerity it will be essential to rapidly apply new science, technologies and approaches to improve the efficiency and effectiveness of HIV programmes in countries.

The report highlights what is already working:

• Improved access to HIV testing services enabled 61% of pregnant women in eastern and southern Africa to receive testing and counseling for HIV – up from 14% in 2005.
• Close to half (48%) of pregnant women in need receive effective medicines to prevent mother-to-child transmission of HIV (PMTCT) in 2010.
• Antiretroviral therapy (ART), which not only improves the health and well-being of people living with HIV but also stops further HIV transmission, is available now for 6.65 million people in low- and middle-income countries, accounting for 47% of the 14.2 million people eligible to receive it.

When people are healthier, they are better able to cope financially. The report acknowledges that investment in HIV services could lead to total gains of up to US$ 34 billion by 2020 in increased economic activity and productivity, more than offsetting the costs of ART programmes.

“2011 has been a game changing year. With new science, unprecedented political leadership and continued progress in the AIDS response, countries have a window of opportunity to seize this momentum and take their responses to the next level,” said Paul De Lay, Deputy Executive Director, Programme, UNAIDS. “By investing wisely, countries can increase efficiencies, reduce costs and improve on results. However, gains made to date are being threatened by a decline in resources for AIDS.”

The report also points to what still needs to be done:

• More than half of the people who need antiretroviral therapy in low- and middle-income countries are still unable to access it. Many of them do not even know that they have HIV.
• Despite the growing body of evidence as to what countries need to focus on to make a real impact on their epidemics, some are still not tailoring their programmes for those who are most at risk and in need. In many cases, groups including adolescent girls, people who inject drugs, men who have sex with men, transgender people, sex workers, prisoners and migrants remain unable to access HIV prevention and treatment services.

Worldwide, the vast majority (64%) of people aged 15-24 living with HIV today are female. The rate is even higher in sub-Saharan Africa where girls and young women make up 71% of all young people living with HIV – essentially because prevention strategies are not reaching them.

Key populations are continually marginalized. In Eastern Europe and Central Asia, more than 60% of those living with HIV are people who inject drugs. But injecting drug users account for only 22% of those receiving ART.

Although better services to prevent mother to child transmission of HIV have averted some 350 000 new infections among children, some 3.4 million children are living with HIV – many of whom lack HIV treatment. Only about one in four children in need of HIV treatment in low- and middle-income countries received it in 2010, as compared to 1 in 2 adults.

“While there have been gains in treatment, care and support available to adults, we note that progress for children is slower,” says Leila Pakkala, Director of the UNICEF Office in Geneva.  “The coverage of HIV interventions for children remains alarmingly low. Through concerted action and equity-focused strategies, we must make sure that global efforts are working for children as well as adults”.

HIV in regions and countries

In 2010, HIV epidemics and responses in different parts of the world vary with shifting trends, progress rates and outcomes.

Sub-Saharan Africa recorded the biggest overall annual increase–30%–in the number of people accessing ART. Three countries (Botswana, Namibia and Rwanda) have achieved universal coverage (80%) for HIV prevention, treatment and care services. The regional ART coverage rate stood at 49% at the end of 2010. Approximately 50% of pregnant women living with HIV receive treatment to prevent mother-to child transmission of HIV. And 21% of children in need are able to get paediatric HIV treatments. There were 1.9 million new infections in the region, where 22.9 million people are living with HIV. There are some major disparities in progress between different parts of the region. Countries in Eastern and Southern Africa have reached much higher coverage rates for ART (56%) and PMTCT (64%) than countries in Western and Central Africa (30% and 18% respectively).

Asia shows a stabilizing epidemic overall, but new infections are very high in some communities. Of the 4.8 million people living with HIV in Asia, nearly half (49%) are in India. Antiretroviral treatment coverage is increasing with 39% of adults and children in need of HIV treatment having access. Coverage of PMTCT services is relatively low- (16%).

Eastern Europe and Central Asia presents a dramatic growth in HIV, with new infections increasing by 250% in the past decade. Over 90% of these infections occur in just two countries: Russia and Ukraine. The region demonstrates high coverage rates for PMTCT and paediatric HIV treatment (with 78% and 65% coverage rates respectively). However, ART coverage is very low at 23%, particularly among the most affected people- the ones who inject drugs.

Middle East and North Africa records the highest number of HIV infections ever in the region (59 000) in 2010, which represents a 36% increase over the past year. Coverage of HIV services are very low in the region: 10% for ART, 5% for paediatric treatment and 4% for PMTCT.

Latin America and the Caribbean have a stabilizing epidemic with 1.5 million living with HIV in Latin America and 200 000 in the Caribbean. HIV is predominantly among networks of men who have sex with men in Latin America. In the Caribbean though, women are the more affected group accounting for 53% of people living with HIV. The region has ART coverage of 63% for adults and 39% for children.  Coverage for effective PMTCT regimen is relatively high at 74%.

Sustaining the HIV response through the next 10 years

• Countries are already showing marked efficiency gains in HIV programmes: South Africa reduced HIV drug costs by more than 50% over a two-year period by implementing a new tendering strategy for procurement. Uganda saved US$2 million by shifting to simpler paediatric regimens. Such efficiencies are promoted through Treatment 2.0 – an initiative launched by WHO and UNAIDS in 2010 to promote simpler, cheaper and easier-to-deliver HIV treatment and diagnostic tools, combined with decentralized services that are supported by communities.
• WHO is developing new guidance on the strategic use of antiretroviral drugs for both prevention and treatment.
• WHO’s “Global Health Sector Strategy on HIV/AIDS, 2011-2015”, endorsed by the World Health Assembly in May 2011 highlights the importance of continuing efforts to optimize HIV treatment and “combination” prevention – the use of a range of different approaches to reduce people’s risk of infection.

The 2011 “Report on the Global HIV/AIDS Response” is the comprehensive report on both the epidemiology and progress rates in access to HIV services globally and in regions and countries. It has been jointly developed by WHO, UNICEF, UNAIDS, in collaboration with national and international partners.

The full report is available from: http://www.who.int/hiv/pub/progress_report2011/.

New Study Finds Online Chat Boosts Lying and Email Has the Most Lies

Newswise — AMHERST, Mass. – A new study by University of Massachusetts Amherst researchers finds that communication using computers for instant messaging and e-mail increases lying compared to face-to-face conversations, and that e-mail messages are most likely to contain lies. The findings, by Robert S. Feldman, professor of psychology and dean of the College of Social and Behavioral Sciences, and Mattityahu Zimbler, a graduate student, are published in the October issue of the Journal of Applied Social Psychology.

The research paper, titled “Liar, Liar, Hard Drive on Fire: How Media Context Affects Lying Behavior,” looked at 110 same-sex pairs of college students who engaged in 15 minute conversations either face-to-face, using e-mail, or using instant messaging. The results were then analyzed for inaccuracies.

What Feldman and Zimbler found was that while there is some degree of deception present in all three forms of communication, it was increased in both instant messaging and e-mail, with e-mail messages the most likely to contain lies. Underlying this was the concept of deindividualization, where as people grow psychologically and physically further from the person they are in communication with, there is a higher likelihood of lying, they say.

In addition to the distance one person is from the other, e-mail communication has the added component of being asynchronous, not as connected in real time as instant messaging or face-to-face conversation. Feldman and Zimbler conclude, “It seems likely that the asynchronicity of e-mail makes the users feel even more disconnected from the respondent in that a reply to their queries is not expected immediately, but rather is delayed until some future point in time.”

“Ultimately, the findings show how easy it is to lie when online, and that we are more likely to be the recipient of deceptive statements in online communication than when interacting with others face-to-face,” says Feldman.

“In exploring the practical implications of this research, the results indicate that the Internet allows people to feel more free, psychologically speaking, to use deception, at least when meeting new people,” Feldman and Zimbler say. “Given the public attention to incidents of Internet predation, this research suggests that the deindividualization created by communicating from behind a computer screen may facilitate the process of portraying a disingenuous self.”

Feldman, who has been the dean of the College of Social and Behavioral Sciences at UMass Amherst since 2009, is an expert on lying and author of the book “The Liar in Your Life,” published in 2009.

He is a frequent commentator in the media on issues related to lying. Feldman joined the faculty of the UMass Amherst psychology department in 1977 after teaching for three years at Virginia Commonwealth University. He has been a visiting professor at Mount Holyoke College and Wesleyan University and was a Fulbright lecturer and research scholar at Ewha University in Seoul, South Korea in 1977.

Released: 11/15/2011 1:00 PM EST
Source: University of Massachusetts Amherst

Related Link:

http://www.newswise.com/articles/online-chat-boosts-lying-and-e-mail-has-the-most-lies

OMEGA-3 Reduces Anxiety And Inflammation In Healthy Students

Newswise — COLUMBUS, Ohio – A recent study gauging the impact of consuming more fish oil showed a marked reduction both in inflammation and, surprisingly, in anxiety among a cohort of healthy young people.

The research, supported by the Ohio State University Center for Clinical and Translational Science (CCTS), was conducted by a team of scientists that has spent more than three decades investigating links between psychological stress and immunity.

“The findings suggest that if young people can get improvements from dietary supplements, then the elderly and people at high risk for certain diseases might benefit even more,” said Janice Kiecolt-Glaser, professor of psychiatry and author of the study, which was published this month in the journal Brain, Behavior and Immunity.

“The more we understand about the complex interplay between inflammation and immunity, the closer we’ll get to figuring out which lifestyle choices and changes have the biggest impact on long term health.”

Omega-3 polyunsaturated fatty acids, such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), have long been considered as positive additives to the diet.

Earlier research suggested that the compounds might play a role in reducing the level of cytokines in the body, compounds that promote inflammation, and perhaps even reduce depression.

Psychological stress has repeatedly been shown to increase cytokine production so the researchers wondered if increasing omega-3 might mitigate that process, reducing inflammation.

To test their theory, they turned to a familiar group of research subjects – medical students. Some of the earliest work these scientists did showed that stress from important medical school tests lowered students’ immune status.

“We hypothesized that giving some students omega-3 supplements would decrease their production of proinflammatory cytokines, compared to other students who only received a placebo,” explained Kiecolt-Glaser.

“We thought the omega-3 would reduce the stress-induced increase in cytokines that normally arose from nervousness over the tests.”

The team assembled a field of 68 first- and second-year medical students who volunteered for the clinical trial. Half the students received omega-3 supplements while the other half were given placebo pills. The students were randomly divided into six groups, all of which were interviewed six times during the study. At each visit, blood samples were drawn from the students who also completed a battery of psychological surveys intended to gauge their levels of stress, anxiety or depression. The students also completed questionnaires about their diets during the previous weeks.

“The omega-3 supplement the students received was probably about four or five times the amount of fish oil you’d get from a daily serving of salmon,” explained Martha Belury, professor of human nutrition and co-author in the study.

Part of the study, however, didn’t go according to plans.

Changes in the medical curriculum and the distribution of major tests throughout the year, rather than during a tense three-day period as was done in the past, removed much of the stress that medical students had shown in past studies.

“These students were not anxious. They weren’t really stressed. They were actually sleeping well throughout this period, so we didn’t get the stress effect we had expected,” Kiecolt-Glaser said.

But the psychological surveys clearly showed an important change in anxiety among the students: Those receiving the omega-3 showed a 20 percent reduction in anxiety compared to the placebo group. An analysis of the of the blood samples from the medical students showed similar important results.

“We took measurements of the cytokines in the blood serum, as well as measured the productivity of cells that produced two important cytokines, interleukin-6 (IL-6) and tumor necrosis factor alpha (TNFα),” said Ron Glaser, professor of molecular virology, immunology & medical genetics and director of the Institute for Behavioral Medicine Research.

“We saw a 14 percent reduction in the amounts of IL-6 among the students receiving the omega-3.” Since the cytokines foster inflammation, “anything we can do to reduce cytokines is a big plus in dealing with the overall health of people at risk for many diseases,” he said.

Inflammation is a natural immune response that helps the body heal, but it also can play a harmful role in a host of diseases ranging from arthritis to heart disease to cancer.
Even though the study showed omega-3 supplements can reduce both anxiety and inflammation – and some of the researchers said that they take omega-3 supplements – the researchers aren’t ready to recommend that the public start taking them daily.

“It may be too early to recommend a broad use of omega-3 supplements, especially considering the cost and the limited supplies of fish needed to supply the oil,” Belury said. “People should just consider increasing their omega-3 through their diet.”

Also working on the research with Kiecolt-Glaser, Glaser and Belury were William Malarkey, professor emeritus of internal medicine, and Rebecca Andridge, an assistant professor of public health.

In addition to support from the CCTS and the Clinical and Translational Science Awards (CTSA), the study was funded in part by a grant from the National Center for Complementary and Alternative Medicine, a part of the National Institutes of Health.

Released: 11/9/2011

Source: Ohio State University Center for Clinical and Translational Science

Related Link:

http://www.newswise.com/articles/omega-3-reduces-anxiety-and-inflammation-in-healthy-students2

Disturbing Sounds…..Ear Anatomy May Amplify Irritating Tones of Chalkboard Squeak

The sound of fingernails on a chalkboard sets many people’s teeth on edge, and now a team of researchers from the University of Cologne in Germany and the University of Vienna in Austria think they know why. In a study designed to pinpoint the source of this and similarly irritating sounds, scientists found that the most obnoxious elements of the noises may be amplified by the shape of the human ear. The team will present its results at the 162nd meeting of the Acoustical Society of America (ASA), which runs from Oct. 31 – Nov. 4 in San Diego, Calif.

In the study, scientists removed information from actual audio clips of people scraping their nails or bits of chalk against a chalkboard. They then played these modified clips to willing participants. Half the study subjects were told what the sounds were; the other half thought that they were listening to selections from contemporary music. Scientists asked the participants to rate each sound’s unpleasantness, and also gauged the subjects’ stress responses to the noises by measuring their blood pressure, heart rate, and skin conductivity (a measure of sweating).

The human ear is known to be particularly sensitive to pitches in the mid- to low-level range of frequencies, between 2000 hertz and 4000 hertz, which is the peak of human hearing. It turns out that when scientists removed all the pitch information in this range from the audio recordings, the study participants rated the noises as more pleasant than other versions of the sounds. One explanation for people’s sensitivity to this band of frequencies is that sounds in this range are amplified due to the anatomy of the ear canal; they are literally louder to us than other sounds are. So chalkboard squeak may be irksome because the most obnoxious elements of the sound sit right in the sweet spot of human hearing.

“We supposed that frequencies in the low-mid range [of human hearing] would play a major role” in the unpleasantness of the sounds, said Michael Oehler, professor of media and music management at the University of Cologne in Germany, who will present his team’s findings at the conference. “But we did not know the exact range. Furthermore, the influence of pitch information was greater than we thought.”

Of potential interest to psychologists is the finding that participants who knew that the sounds they were hearing came from nails on a chalkboard rated these sounds more unpleasant, and experienced a higher degree of sweating, than the people who thought they were listening to music.

Released: 11/3/2011

Source: American Institute of Physics (AIP)

Related Link:

http://www.newswise.com/articles/ear-anatomy-may-amplify-irritating-tones-of-chalkboard-squeak

Money and Health…New Study Finds Physical Functioning Declines More Rapidly Among the Poor

Newswise — COLUMBUS, Ohio – A new national study shows that wealthier Americans and those with private health insurance fare better than others on one important measure of health – and this health gap only grows wider as they age.

Researchers found that, when the study began, middle-aged and older Americans with more income and assets reported having less trouble with five activities of daily living: walking across a room, bathing, eating, dressing and getting in and out of bed.

Especially troubling, though, was how the disadvantage for the poor snowballs over time, said Virginia Richardson, co-author of the study and professor of social work at Ohio State University.

“The rich stay healthier, while the poor see steeper declines in their health as they age,” Richardson said.

Those with private health insurance also reported less trouble with these activities than did those without such insurance. That gap also increased over time.

These findings held true even after researchers took into account other variables which may have affected physical functioning, including the participants’ age when the study began, marital status, employment status, and their generational group.

The results are important because physical functioning is the key for older adults to be able to take care of themselves without needing a caregiver, Richardson said.

“When people can no longer bathe themselves or cook for themselves, that’s when they need to be institutionalized,” she said.

Richardson conducted the study with Jinhyun Kim, assistant professor at Marywood University. Their results were published in a recent issue of the journal Health and Social Care in the Community.

This study is one of the few that have linked socioeconomic status – which includes income and assets – and health insurance on people’s physical functioning over an extended period of time, according to Richardson.

The researchers used data from the Health and Retirement Study, run by the University of Michigan, which followed Americans over 50 years of age over the course of 12 years, from 1994 to 2006. Data was collected every two years. For this study, Richardson and Kim used data on 6,519 participants.

In 1994, when data was first collected, the researchers found that those with higher income and assets had better functioning. The key finding, though, said Richardson, was how this gap grew over time.

“The more income and assets you have, the slower your health decline will be,” she said.

This was true for both men and women, although there was more variability among women in the study.

Those who had private health insurance also reported fewer problems with physical functioning than those who didn’t at the beginning of the study. And, just like with income and assets, the gap between the haves and the have-nots increased over time.

The researchers expected that those with higher levels of education would report better physical functioning, but that was not true of most of the sample. However, education did make a difference among older Black adults – those with more education tended to have better functioning than those with lower levels.

The data in this study can’t answer the question of how socioeconomic status and private health insurance help protect people’s physical functioning, Richardson said. But the results fit with other studies that suggest that economically disadvantaged people may not be able to afford medications they need, or may take steps to make their prescriptions last longer, like cutting pills in half.

They may also skip diagnostic tests that could help identify disease earlier, when it is more treatable. This may be especially true for those who lack private health insurance that can help pay for expensive testing.

“One of the first questions many elderly adults ask when their doctors order tests is ‘will my insurance cover it?’ Richardson says.

Richardson said the findings suggest that our public health care policies need to consider how people’s economic resources will change their physical functioning as they age.

“Our policies need to incorporate a life course perspective. We need to find way to prevent the rapid deterioration in physical functioning that is more likely among those who have fewer resources.”

Released: 11/7/2011

Source: Ohio State University

Related Link:

http://www.newswise.com/articles/physical-functioning-declines-more-rapidly-among-the-poor