Lean women underreported their calorie intake by 275 calories per day, while obese women underreported their calorie intake by 312 calories per day according to a new study. Read the entire article | Email this article

A new study looked at twins that came from the same egg (monozygotic twins) so that they share the same genetics, where one twin was obese, and the other was not.

The obese twins reported eating the same amount of calories as the non-obese twin (2293 calories per day reported by the obese twin versus 2341 calories for the non-obese twin), however, it was determined that the obese twins underreported their calorie intake by an average of 764 calories per day.

The obese twins also reported getting the same amount of physical exercise as the non-obese twin, however, the researchers determined that the obese twins overestimated the amount of physical activity they did by 430 calories per day. Read the entire article | Email this article

Obese people may under-report their calorie intake by as much as 50 percent, that is, saying that they only eat half as much as they really do according to one paper. However, studies have found that even lean people may under-report their calorie intake by as much as 20 percent. Read the entire article | Email this article

Men underreport calorie intake 12 to 14 percent, and women underreport it 16 to 20 percent according to a study from researchers at the National Cancer Institute in Bethesda, Maryland. Read the entire article | Email this article

When people were asked how much alcohol they had to drink one week ago, they underreported the amount by 44 percent according to a study from National Institute of Public Health, Copenhagen, Denmark. This underreporting "is very clear already after 2-3 days," the authors wrote. Read the entire article | Email this article

Overweight adults underestimate food intake by 300 to 500 calories per day. Read the entire article | Email this article