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

This man-made fat was developed to protect us against butter. Turns out, it acts like butter inside our bodies.

What exactly are trans fats? How are they made? How bad are they, really? And just how solid is the science that the FDA consulted when they voted to list trans fats on nutrition labels? To get to the bottom of these and other questions about trans fats, WebMD spoke to leading nutritionists.

What Exactly Are Trans Fats?

Trans fatty acids or trans fats are formed when manufacturers turn liquid oils into solid fats. Think shortening and hard margarine. Manufacturers create trans fats via a process called hydrogenation. Hydro-what? In a nutshell, hydrogenation is a process by which vegetable oils are converted to solid fats simply by adding hydrogen atoms.

Why hydrogenate? Hydrogenation increases the shelf life and flavor stability of foods. Indeed, trans fats can be found in a laundry list of foods including vegetable shortening, margarine, crackers (even healthy sounding ones like Nabisco Wheat Thins), cereals, candies, baked goods, cookies, granola bars, chips, snack foods, salad dressings, fats, fried foods, and many other processed foods.

Trans fatty acids are found naturally in small quantities in some foods including beef, pork, lamb, butter, and milk, but most trans fatty acids in the diet come from hydrogenated foods. So there is good news: When the new nutrition labels go into effect Jan. 1, 2006, it will be easier to screen these fats out of your diet. Until then, look at the package's list of ingredients. Products that contain partially hydrogenated oils or vegetable shortening may contain trans fats.

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...