Do any weight loss pills really work?

Alli is the brand name for the drug orlistat. It is one of the most popular weight loss pills. Orlistat is available as a prescription drug and also sold over the counter. It works by preventing the body from breaking down of some of the fat that people eat. When the intestines absorb less fat, weight loss may occur. A review of 11 studies indicated that orlistat might increase weight loss by a small amount. The review found that those who took orlistat lost an average of 2.9 percent more weight than those who did not take the drug. Orlistat may cause a change in bowel habits. People taking orlistat may experience side effects, such as diarrhea, stomach pain, and difficulty controlling bowel movements. 2. Caffeine Caffeine is a stimulant found in coffee, tea, soft drinks, and chocolate. It is also often added to diet pills and supplements. According to a study of 76 obese adults, people who had high caffeine intake saw a greater reduction in fat mass, weigh...