Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started
My Medicine

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community


    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

Study Shows People Compensate for Occasional Food Splurges by Undereating Later

Oct. 11, 2010 (San Diego) -- Did you splurge at the birthday party with a big piece of chocolate cake, driving your daily calorie total way above average? Don’t feel guilty, because you're likely to compensate later, resulting in a negligible net gain, a study shows.

It turns out our body's feedback system doesn't tally up calories in, calories out quite as precisely as some experts believe, says Kevin Hall, PhD, a physiologist at the National Institutes of Health (NIH) who presented his findings at the Obesity Society meeting in San Diego.

''On a day to day basis, you can vary your food intake by plus or minus 600 calories a day and still have a stable body weight, as long as your long-term average [calorie intake] is not creeping up or down," Hall tells WebMD.

Overeating and Weight Change

Hall and his colleague, Carson Chow, PhD, also of the NIH's National Institute of Diabetes and Digestive and Kidney Diseases, created a mathematical model to determine how precise the body's feedback mechanism is in handling the wildly fluctuating calorie intake and activity level most people experience.

"We used our mathematical model of human metabolism and 'fed it' with day-to-day fluctuations of calories that realistically simulate what happens in real people," Hall says.

The question they asked, Hall says, is "If we forced the mathematical model to eat what real people do, with fluctuations of about 30%, what would be be the expected change in body weight?"

"What we found was that the day-to-day fluctuations of about 600 calories a day led to only small variations of body weight of about 2%, or about three pounds over extended time period," Hall says. They simulated 10 years in the model.

But the results, he warns, aren't an excuse to splurge often. "Remember that the long-term average of our simulated food intake was constant over time."

And much previous research has shown that increasing average food intake over time surely results in weight gain.

The current research suggests people who eat sensibly and usually keep their daily intake to a reasonable number of calories to maintain their weight don't need to stress about an occasional splurge because they'll compensate later by undereating.

Healthy Recipe Finder

Browse our collection of healthy, delicious recipes, from WebMD and Eating Well magazine.

Top searches: Chicken, Chocolate, Salad, Desserts, Soup

Heart Rate Calculator

Ensure you're exercising hard enough to get a good workout, but not strain your heart.

While you are exercising, you should count between...