Stepping onto a scale after a calorie-filled holiday season isn't an activity many 21st-century Americans relish.

The population of the federal state of Saxony-Anhalt most often suffers from obesity and has the greatest waist circumference, followed by Brandenburg. Hans Hauner of Munich Technical University and his coauthors have performed a study of the regional differences in prevalence in general medical care.

Over the past two decades, the number of adults consuming sugar-sweetened beverages such as soft drinks, fruit drinks and punches has increased dramatically, according to a study led by researchers at the Johns Hopkins Bloomberg School of Public Health.

People who use weight training to ease their lower back pain are better off than those who choose other forms of exercise such as jogging, according to a University of Alberta study.

Severely obese patients who have lost significant amounts of weight by changing their diet and exercise habits may be as successful in keeping the weight off long-term as those individuals who lost weight after bariatric surgery, according to a new study published online by the International Journal of Obesity.

Fat. The very word conjures up images of excess weight and ill health. We have come to view the notion of “fatness” as something akin to being unhealthy, morally repugnant and socially damaging.

Obesity is a growing epidemic in the U.S. with a significant increase in prevalence from 15 percent to 32.9 percent from 1980 to 2004. Nonalcoholic fatty liver disease (NAFLD) is an emerging problem related to the obesity epidemic, becoming one of the most common causes of liver disease in the nation.

Tributyltin, a ubiquitous pollutant that has a potent effect on gene activity, could be promoting obesity, according to an article in the December issue of BioScience. The chemical is used in antifouling paints for boats, as a wood and textile preservative, and as a pesticide on high-value food crops, among many other applications.

In the battle against obesity, Yale University researchers may have discovered a new weapon — a naturally occurring molecule secreted by the gut that makes rats and mice less hungry after fatty meals. The findings are published in the Nov. 26 issue of the journal Cell.

Obesity gradually numbs the taste sensation of rats to sweet foods and drives them to consume larger and ever-sweeter meals, according to neuroscientists. Findings from the Penn State study could uncover a critical link between taste and body weight, and reveal how flab hooks the brain on sugary food.

Researchers at the University of Toronto, Faculty of Medicine, Toronto, Canada, have discovered that adiponectin, a protein secreted from adipocytes, is a metabolic link that can explain, in part, the known positive relationship between obesity and both bone mineral density and reduced susceptibility to fractures.

Once hailed as a miracle weight-loss drug, Fen-phen was removed from the market more than a decade ago for inducing life-threatening side effects, including heart valve lesions. Scientists at UT Southwestern Medical Center are trying to understand how Fen-phen behaves in the brain in order to develop safer anti-obesity drugs with fewer side effects.