Obesity is a serious problem for modern medicine. Overweight and obesity themselves are qualified as disease entity and are also investigated as causes of numerous complications. It turns out that problems with maintaining a proper weight, concern not only adults, but also the youth and small children. Among populations of various nationalities a changing percentage of overweight and obese people is observed. This is caused by manner of nutrition, lifestyle and traditions. Poland belongs to a group of countries with a high index of obesity and a high percentage of diseases following the excessive growth of adipose tissue. Treatment of obesity is a complex and multidirectional process. It involves nonpharmacological, pharmacological and surgical methods. Until recently on Polish pharmaceutical market there have been preparations containing sibutramine. This substance is the inhibitor of serotonine reuptake and lessens the appetite with simultaneous increase of metabolism. However, it has been shown that sibutramine has adverse effects. Currently, Abbott Laboratories Poland company, which is the manufacturer of the original drug Meridia, containing sibutramine, informed about the suspension of sibutramine distribution in the UE territory. The case is being investigated. Therefore, it is crucial to make patients aware of the problems and consequences of unhealthy lifestyle and health negligence.