Medifast, a diet plan that relies on meal replacement shakes, soups, simple meals and bars for most of its daily calorie intake, promises quick and easy weight loss of up to 20 lbs. in 30 days on its website.

If you're a teenage girl, you should know it's normal to experience weight gain as your body grows and develops. As you adjust to these changes, you may find that you've put on more body fat than you like. Poor diet and exercise habits can also start to catch up with you by causing weight gain.

Crohn's disease causes chronic inflammation of the gastrointestinal tract. While many people experience weight loss as a symptom of the disease, Crohn's produces different symptoms in different people.

The fat pad is another name for the fat on the lower abdomen area. Infomercials flood the television airways with abdominal workout devices that promise to melt fat off your abs in minutes, especially on those hard to reach areas. If it sounds too good to be true, it probably is.

Mixing alcohol and diet pills can cause undesirable side effects. Alcohol and diet pills both contain stimulants, but the stimulants found in each substance are different. Diet pills often contain stimulants known as uppers that increase heart rate, breathing and blood pressure.

Lower belly fat, also called a “belly fat apron,” is a common problem for aging women. Muscle mass is going to diminish as you age. If you don’t exercise to replace muscle loss, weight gain occurs all over your body, including your belly. However, you can’t spot reduce any area of your body – including your midsection.

Creatine is a naturally occurring amino acid that helps provide muscles with energy during high-intensity exercise. Creatine supplementation is a popular way for bodybuilders and athletes to increase muscle mass, but research suggests that size increase in muscles is actually due to water retention.

Fasting, or abstaining from eating any food, is an age-old tradition that has been revitalized in the detoxification and wellness industry. Shelves are packed with detoxifying cans of this or detoxifying jars of that.

CrossFit Football is a strength and conditioning program designed by NFL players and coaches for football players and other power athletes. The program uses a variety of functional movements executed at high intensity levels to simulate the metabolic demands of a football game.

Gaining weight requires you to create a calorie surplus. You must eat more calories than you burn over time to add pounds.

Inflammatory bowel syndrome, also called spastic colon, is a common gastrointestinal illness that affects the colon. IBS does not cause inflammation or changes to the colon, according to MayoClinic.com. People with IBS have a colon that is more sensitive and reactive than usual.

As a student handling demanding classes and time-consuming homework, you may find it difficult to frequent a gym. You needn't put your weight loss goals on hold however, as treadmills and toning machines aren't the only path to a fitter you.