Diet pills are becoming a popular means of losing weight. Given the growing rates of obesity and overweight in the U.S. and all over the world, diet pills are fairly regarded as an easy way to lose weight, without any need to involve in physical activity or/ and changing lifestyles. Unfortunately, only a few people know about adverse effects diet pills produce on human health. Among those, who know about these effects, many prefer neglecting these warnings. In many aspects, diet pills do not lead to significant weight losses but result in a whole range of complications that cover all aspects of healthy performance. It is no longer a secret that gastrointestinal effects, oily spotting, oily evacuation, fecal incontinence, and infectious diarrhea are just some out of many adverse effects diet pills cause in those, who take them; excessive absorption of fat also leads to vitamin deficiency (especially in A, D, E, and K, as well as beta-carotenes). Nervousness, insomnia, restlessness, hyperactivity (or fatigue), congestive heart failure ? all these are the direct results of diet pills (Anonymous). The fact is in that diet pills dangerous or potentially dangerous elements: caffeine, phenylpropanolamine, ephedrine hydrochloride, etc. However, the more dangerous are the effects of diet pills that are amphetamine-based and are brought to the U.S. illicitly. Cohen reports a case of a 38-year-old woman with the history of ?intermittent chest pains, palpitations, headaches, and insomnia? (430). That these complications significantly worsen the overall quality of life in individuals is obvious, but many of them refuse to take into account these complications, seeking to lose weight by any means possible. Certainly, diet pills do lead to 5-10% of weight loss, if taken continuously and over long-term periods (Cohen 431). Unfortunately, these weight loss indicators are closely associated with the need to engage an overweight person in physical activity and the need to change the lifestyle. Diet pills cannot solely resolve the current overweight problems, and given the dangers which they pose to human health, they should be taken as the measure of ultimate resort, when traditional (sport and nutrition) approaches have not resulted in any reduction of weight.