When many patients mention hormones, they mistake them for those additives on TV shows that make poultry gain weight and ripen quickly, and therefore talk about them. But what about the hormones that are clearly recommended by doctors in clinical practice? So are hormones “angels” or “devils”? Angel In fact, our body produces various hormones every day, including thyroid hormone, adrenocorticotropic hormone, gonadotropic hormone, growth hormone and so on. Their functions are very rich, they can regulate metabolism, provide energy, promote growth and development, influence aging, regulate reproductive processes, influence the development and activities of the nervous system, and enable the body to better adapt to environmental changes. In other words, hormones can come from the human body and can contribute to our healthy life. Of course, each hormone must be maintained within its own normal range, too high or too low will cause the corresponding symptoms and affect human health. For example, “acromegaly” (or “gigantism” if it occurs in childhood) is caused by excessive growth hormone, which leads to abnormal growth of the bones, internal organs and vocal cords of the patient. “(scientific name: goiter) is caused by the lack of iodine, a necessary element in the synthesis of thyroid hormones, in the patient’s daily diet, resulting in the accumulation of a large amount of iodine in the thyroid tissue of the neck, which is half of what the body synthesizes. As a result, a large amount of “semi-finished thyroid hormones”, which are half synthesized by the body, are stored in the thyroid tissue of the patient’s neck, resulting in a swollen “big neck”. Therefore, hormones can be “angels” or “devils”, but the key lies in the “amount”. In short, hormones are a kind of active chemical substances that regulate the normal metabolism and activities of our body, which are like “postmen” among different organs of our body, transmitting key information among various organs, regulating the physiological functions of our body, and ensuring our body to complete its daily life and work normally. We should use a rational scientific attitude to its understanding, there is no need to talk about the tiger.