The love of beauty is in everyone’s heart. Especially some young women want to have a slim body, so whether they belong to the obese range or not, they join the ranks of weight loss. Controlling diet and increasing exercise to lose weight is laborious and time-consuming, and most of them can’t stand the temptation of food, so it’s difficult to stick to it for a long time. The weight loss pills have relieved these people of their worries, so many of them have joined the team of taking pills to lose weight. Are weight loss pills really that effective? Don’t they have side effects? First of all, let’s look at the mechanism of action of weight loss pills will understand. There are two main types of weight loss drugs on the market: appetite suppressants and fat absorption blockers. 1, appetite suppressants are mainly through the inhibition of the central neurotransmitters norepinephrine and 5-hydroxytryptamine reuptake, excite the satiety center, so that people feel full, thereby suppressing appetite and reducing energy intake to achieve the purpose of weight loss. The most widely used drug in this category is fenfluramine, which has been banned worldwide in recent years due to cases of death from serious toxic side effects such as valvular heart disease and pulmonary hypertension after taking the drug. Now widely used is sibutramine, which has been reported to have significant weight loss effects, but also has side effects such as neurological dysfunction and increased blood pressure, and is prohibited in people with hypertension, coronary heart disease, stroke, liver and kidney impairment, pregnant women, and nursing mothers. Bupropion is also a central appetite suppressant. Its adverse effects are mainly agitation, insomnia, headache, increased blood pressure and gastrointestinal symptoms such as nausea, vomiting, diarrhea, etc. It can also produce euphoria and has certain addictive properties. 2, fat absorption blocker commonly used is orlistat, which is a new gastrointestinal pancreatic lipase inhibitor, the drug in the intestinal cavity and lipase combined with lipase, so that lipase inactivation, it is difficult to hydrolyze the fat in food under the action of lipase into absorbable free fatty acids, can only be excreted from the feces, due to the reduction of fat absorption, long-term use can achieve control and maintenance of weight, reduce weight rebound The purpose of this product is to control and maintain body weight and reduce weight regain. However, there are also some adverse reactions caused by poor fat absorption, such as large amounts of fat or oily liquid in the feces, fecal incontinence, abdominal pain, nausea and vomiting, abdominal distention, etc. Long-term use may lead to fat-soluble vitamin deficiency. From the above introduction we can see that although diet pills have a certain weight loss effect, but at the same time have obvious side effects, and if you are only slightly overweight, as long as you can properly control your diet and strengthen your exercise, you simply do not need to take diet pills to achieve the purpose of weight loss. For those who are obviously overweight obese people should also be under the guidance of a doctor, in addition to diet, exercise, behavior and other therapies, and then supplemented by drug therapy or other therapies such as surgery to control weight. If you use drugs to lose weight, even if you achieve the goal within a certain period of time, once you stop taking drugs, your weight will immediately go back up, and long-term use will bring a lot of side effects, but the loss is not worth the gain. For those who have more localized fat or poor body shape, taking weight loss medication has no effect at all, only reasonable exercise can achieve the purpose of changing body shape.