The U.S. dietary supplement industry brings in about $26.9 billion per year, according to the Council for Responsible Nutrition. Diet and weight loss aides make up a large portion of this revenue and are sold over the counter in stores across the country.

When you exercise, you probably find yourself stripping off layers of clothing as you start getting hot. So you might wonder what's up with the guy who wears vinyl workout clothes, covered neck to ankles the entire time even though he's sweating up a storm.

Although some diet pills might be effective, there is one thing they are unable to do, and that is spot reduce fat from a specific area of your body. If you want to lose weight from your belly, thighs and neck, you must focus on decreasing fat stores throughout your body by burning calories.

Phentermine is a stimulant used as an appetite suppressant. In combination with diet and exercise, phentermine can help people lose weight. Until 1997, phentermine was also sold in combination with fenfluramine under the brand name Fen Phen.

Ajwain, also sometimes called Bishop's weed, is a plant grown in India and the Middle East and used as an herbal medicine to help treat a number of health conditions, including gastrointestinal issues such as diarrhea and flatulence. It also acts as an antioxidant.

Drinking an herbal tea to help rid your body of toxic substances and lose weight sounds like a healthy way to drop those pounds; ultimately, however, you may be disappointed with the results. A detox tea may help you lose some weight, but not in a way that makes the weight loss permanent.

Many diet pills claim to produce weight loss with no effort required on your part. One of the most egregious claims made by weight loss drug marketers is that they will enable you to lose weight without exercise.

Phentermine is a sympathetic amine, which means it is a stimulant very similar to an amphetamine. Phentermine has one purpose -- as a short-term pharmacologic, or drug, therapy for weight loss in obese patients. Although approved for only one indication, the effects of phentermine are felt across multiple body systems.

Although many Americans consume diets that are low in the essential mineral chromium, it isn't common to be deficient in chromium. Some people take supplements containing a form called chromium picolinate in the hopes of improving their weight loss results.

For better or worse, fasting has played an intrinsic role in various cultural, dietary and healing practices for centuries. Skinverse reports that short-term fasting is a natural aspect of healing, citing wounded animals that cease eating until their injuries have healed.

You might be tempted to reach for an herbal slimming tea to speed your weight loss. After all, "herbs" in the name makes the product seem benign -- even healthy -- and you welcome any help you can get when you're trying to lose pounds. The promises these teas make are usually too good to be true, though.

You may enjoy a sprinkle of cinnamon on your cappuccino or a dash in your oatmeal, but cinnamon's beneficial qualities extend beyond a warm, spicy scent and a comforting flavor. Cinnamon may play a role in managing blood sugar levels and in mitigating other cardiovascular disease risk factors.