More schools in the U.S. and other countries have begun grading students' weight based on body mass index and including the results in report cards in an effort to combat childhood obesity. "When students and their parents 'know their numbers' and the consequences of those numbers, they are more likely to do something about them," Dr. Lloyd Sederer of the New York State Office of Mental Health wrote in a blog post quoted here.
Data on 16,718 women indicate that those who took calcium supplements alone or in combination with vitamin D after enrolling in the Women's Health Initiative study were 13% to 22% more likely to experience heart problems. Researchers, whose study appears in the British Medical Journal, also did a meta-analysis of 13 other studies and found that calcium-supplement use was tied to elevated risks of heart attacks and strokes.
"Anti-gravity treadmills" that take weight off the feet may help people exercise harder and longer without pain or injury. The treadmills give wounded veterans at Walter Reed Army Medical Center the confidence to run as part of their rehab and allow for faster recovery for injured athletes.
Data on 270 individuals found that those who were assigned to a low-carbohydrate diet had lower rates of food cravings for carbs and starches and a decreased preference for carbohydrate- and sugar-rich foods than those who followed a low-fat diet. Those who went on a low-fat diet craved fewer high-fat foods and had a greater decline in preference for low-carb, high-protein foods than the low-carb dieters did.
A review of studies published in Obesity Reviews found that children who experienced violence from caregivers were 26% to 185% more likely to be obese as adults, and those who were sexually and physically abused were more likely to have a higher body mass index in adulthood than those who were not abused.