Regarding obesity, first and foremost, one should not eat arbitrarily, meaning one should not randomly choose the so-called weight loss drugs available on the market. For obesity, we identify two types: primary obesity and secondary obesity. Primary obesity occurs without any specific reason, merely due to an irregular lifestyle, unhealthy diet, lack of exercise, etc., leading to weight gain.

Secondary obesity has identifiable medical causes; for example, weight gain caused by taking large amounts of exogenous hormones; or hypothyroidism leading to myxedema, which causes weight gain; or issues with the pituitary or adrenal glands leading to excessive secretion of cortisol in the blood, causing a redistribution of fat that results in Cushing's syndrome, among others. For these types of secondary obesity, it is important to identify the underlying causes and treat them accordingly.

For primary obesity, it is not advisable to recommend weight loss drugs commonly found on the market. The first recommendation is to control the diet scientifically, combined with a certain intensity of aerobic exercise to reduce weight. Caution is advised with those weight loss drugs sold by online marketers; one should not consume them carelessly.