Report: Sex Burns Less Calories than You Think
A new report in the New England Journal of Medicine argues that many of the beliefs that people have about weight loss — things like the importance of gym class for children or small dietary changes for adults — are really just tall tales.
However, the objectivity of the report has been questioned because the scientists have strong financial ties to weight-loss products. In fact, the disclosures about the authors’ financial ties to food, beverage and weight-loss product makers take up half a page of fine print in the journal.
Bearing that in mind, here are some of the findings of the report:
School gym classes don’t really have an impact on a child’s health. Classes typically are not long, often or intense enough to make much difference.
Losing weight in a short period of time can be an effective strategy for keeping it off for good. Although many dieters regain weight, those who lose a lot to start with often end up at a lower weight than people who drop more modest amounts.
Eating breakfast on a regular basis doesn’t really have an effect on obesity. Two studies found no effect on weight, and one suggested that the effect depended on whether people were used to skipping breakfast.
And last but not least...
Sex is not really a good way of burning calories and therefore losing weight. Claims that sex burns 100 to 300 calories are common, yet the only study that scientifically measured the energy output found that sex lasted six minutes, on average, and burned only 21 calories — about as much as walking, according to the report. In the words of the authors, “Disappointing, isn't it?”
Dr. David Ludwig, a prominent obesity research with Boston Children's Hospital, said that although he agrees “with most of the points,” he disputes the authors' conclusions that meal replacement products and diet drugs work for battling obesity.
Source: Daily News