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

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 Weight Loss Is Similar in Four Types of Diets

Feb. 25, 2009 -- If you are trying to lose weight, just pick a diet, any heart-healthy diet, and stick to it.

It doesn't matter much if it's high in protein or not, high in unsaturated fat or not. You can expect to lose about the same amount of weight on any weight loss plan, according to a new study which found that the best diet is the one you will follow.

"Find a diet type that is comfortable for you," says study researcher Frank M. Sacks, MD, a professor of cardiovascular disease prevention at the Harvard School of Public Health. As long as the diet is heart-healthy, and calorie-controlled for your needs, he says, you will lose weight if you stick to it. It also helps to get support in the form of loved ones or an organized group, he found.

In his study, he didn't find a significant difference in weight loss regardless of the diet type. In each of the four groups, participants averaged a 13-pound loss at the six-month mark.

The study is published this week in The New England Journal of Medicine.

Comparing Diets

For years, debate has raged about whether a diet that focuses on protein, carbs, or fat is best for weight loss. So Sacks and his colleagues randomly assigned 811 people to one of four diet plans commonly used to lose weight:

  • A low-fat, average-protein diet
  • A low-fat, high-protein diet
  • A high-fat, average-protein diet
  • A high-fat, high-protein diet

Protein in the diets ranged from 15% to 25% of calories, fat from 20% to 40% of calories, and carbs from 35% to 65% of calories. No specific popular diets were studied, Sacks tells WebMD, although the four resemble some popular weight loss strategies. Each of the four diets used in the new study had the same personalized calorie-reduction goals and all were low in saturated fat and cholesterol and high in dietary fiber so as to be heart-healthy.

Participants in this clinical trial, funded by the National Institutes of Health, were 30 to 70 years of age, and were either overweight or obese, with a body mass index (BMI) of 25 (the start of overweight) or higher. They recorded food intake in a diary or an online tool that kept them posted on how their intake compared with their goals. Group diet counseling sessions were scheduled at least twice a month for the study, which ran from late 2004 through the end of 2007, and one-on-one sessions were held every eight weeks.

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...