Body mass index, a measurement calculated using height and weight, is often used to help determine if someone is overweight, underweight or at a healthy weight.

In 2001, Ori Hofmekler published the Warrior Diet to help people get off the roller coaster of weight gain and loss that modern-day diets may cause. He bases his plan -- which involves "undereating" during the day and "overeating"

If you're looking to drop excess pounds, you're not alone. Colorado State University Extension says 50 million adults living in the United States attempt a diet every year. But many dieters fail to meet their long-term weight goals.

You want nothing more than to don a tank top this summer, but thick arms make you self-conscious when you go sleeveless. Selectively losing fat in your arms isn't possible, however.

Healthy weight loss comes from limiting calories and exercising regularly. But if you’re struggling to lose weight, you may be tempted to try a fad diet that requires you to give up certain food groups so that you restrict calories even more.

Excess body weight is not just a problem for people older than the teen years. Teenagers also face obesity and the health problems associated with it, according to the American College of Sports Medicine.

You've done everything right. You pass up the pizza and avoid mindless snacking in front of the TV, so it can feel frustrating when lifestyle changes aren't preventing weight loss. Don't worry, a few simple changes can help get you back on the right track.

The Isagenix 9-Day Cleansing and Fat Burning system is marketed as a weight loss supplement to help you to lose up to seven pounds in nine days, according to the Isagenix website.

A vegetable is an edible plant or portion of a plant, including leaves such as lettuce, roots such as potatoes, and fruit such as peppers or tomatoes.

Slim-Fast ready-to-drink diet shakes, manufactured by Unilever, provide a quick, convenient meal replacement for busy dieters. They offer a variety of flavors, including chocolate, vanilla, banana and cappuccino.

The blood type diet was created by Dr. Peter J. D’Adamo, the naturopathic physician who wrote "Eat Right 4 Your Type," a New York Times' best-selling book, in 1996.

Where a woman's weight loss first becomes noticeable really depends on her genes. Many women hang on to weight in the hips and thighs, while others are more likely to have a larger midsection.