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An intermittent, low-carbohydrate diet was superior to a standard, daily calorie-restricted diet for reducing weight and lowering blood levels of insulin, a cancer-promoting hormone, according to recent findings. Researchers at Genesis Prevention Center at University Hospital in South Manchester, England, found that restricting carbohydrates two days per week may be a better dietary approach than a standard, daily calorie-restricted diet for preventing breast cancer and other diseases, but they said further study is needed.

A recent study of obese volunteers participating in a 12-week dietary weight-loss program found that successful weight losers had significantly higher resting nerve activity compared to weight-loss resistant individuals. The study was accepted for publication in The Endocrine Society’s Journal of Clinical Endocrinology & Metabolism (JCEM).

A survey of more than 33,000 Italian high school students reveals that both underweight and overweight teens consume 20 to 40% more illegal drugs than their normal-weight peers. The work, led by Sabrina Molinaro and Francesca Denoth of the Italian National Research Council, is reported in the Nov. 16 issue of the online journal PLoS ONE. Check the end of this report for a link to download the full-text article.

Obese patients enrolled in a weight-loss program delivered over the phone by health coaches and with website and physician support lost weight and kept it off for two years, according to new Johns Hopkins research. The program was just as effective as another weight-loss program that involved in-person coaching sessions. A report on the research was published today in the New England Journal of Medicine.

According to research presented this week at the American College of Rheumatology Annual Scientific Meeting in Chicago, weight loss combined with exercise reduces pain and improves mobility in people with knee osteoarthritis. Study lead author, Stephen P. Messier, PHD, at Wake Forest University comments, “Long-term intensive diet and moderate exercise can improve mobility and reduce pain by as much as 50 percent.”

About 14 percent of Philadelphia’s high school students are considered overweight, and while a myriad of research has been published on what schools, communities and parents can do to help curb these rates, very little information exists on what the teens themselves are doing to lose weight. Research led by public health doctoral candidate Clare Lenhart has found that while most obese teens in Philadelphia report wanting to lose weight, their actions are more of a hindrance than a help.

Almost a quarter of men and women in England and over a third of adults in America are obese. Obesity increases the risk of diabetes and heart disease and can significantly shorten a person’s life expectancy. New research published by BioMed Central’s open access journal International Journal of Behavioral Nutrition and Physical Activity shows that improving body image can enhance the effectiveness of weight loss programs based on diet and exercise. Check the end of this report to download this open access study.

People with personality traits of high neuroticism and low conscientiousness are likely to go through cycles of gaining and losing weight throughout their lives, according to an examination of 50 years of data in a study published by the American Psychological Association. The publisher made the original study available for free for an undetermined length of time; check the end of this report for a download link.

A new study indicates that the practices that help people to lose weight and the practices that help them keep it off do not overlap much. “No one announces to a dieter, ‘You’re moving into the weight-maintenance stage. You’ll have to do things differently,’ said lead author Christopher Sciamanna, M.D. His group investigated whether two distinct sets of behaviors and thought patterns were involved in weight loss and its maintenance.

Adolescents who diet and develop disordered eating behaviors (unhealthy and extreme weight control behaviors and binge eating) carry these unhealthy practices into young adulthood and beyond, according to a study conducted by University of Minnesota researchers and published in the July 2011 issue of the Journal of the American Dietetic Association. The results will appear in the Journal of the American Dietetic Association.