Coincidentally, Ms. Xiao, who is about the same age as Ms. An, also has symptoms of frigidity, but the accompanying symptoms are different, mainly excessive sweating, fatigue, insomnia, irritability, shortness of heart and breath after activity, and irritability. The doctor's diagnosis was exactly the opposite of Ms. An's - hyperthyroidism (hyperthyroidism for short).

The decline in sexual desire of Ms. An and Xiao involves the same endocrine organ-the thyroid gland, but one function is too low and the other function is too strong. The experiences of these two women serve as a warning: when your interest in sex drops and you look for the cause, don’t forget about your thyroid gland.

Thyroid is related to sex

Where is the thyroid? On the human neck. To be specific, it is about 2 to 3 centimeters below the "Adam's apple" and can move up and down with swallowing movements. The thyroid gland is divided into two lobes, the left and right, connected by a link-like tissue in the middle, like an "H" shape, weighing about 20 to 30 grams. Such a little thing is naturally a "little brother" compared to other organs, but it can be called a "big brother" in the endocrine system.

The physiological mission of the thyroid gland is to secrete a hormone - thyroid hormone, which specifically includes triiodothyronine (English abbreviation T3) and tetraiodothyronine (English abbreviation T4) Two kinds. Don’t underestimate thyroid hormone, its power is huge!

For example, it plays an important role in the synthesis and decomposition of various nutrients such as carbohydrates (sugar), fats and proteins, thereby maintaining the physiological activities of various cells and ensuring the normal operation of life machines. . Once the thyroid becomes diseased, it will cause insufficient or excessive secretion of thyroid hormone, and various metabolic problems will occur in the human body.

Furthermore, thyroid hormone also plays an important role in the growth and development of organs and tissues. The most significant impact is on bones and brain. The former is related to a person's height, and the latter determines the level of IQ. Have you ever seen children who have hypothyroidism due to some reason? They are short in stature, have dull faces, and have extremely low intelligence. Medically, they are called cretinism or cretinism, which is caused by insufficient thyroid hormone secretion.

In addition, thyroid hormone is also closely related to human reproduction. The development and maturity of gonads, sperm production in men's testicles and the normal operation of women's menstrual functions are all inseparable from the function of the thyroid gland. If the thyroid gland is slightly slack, it will not only cause a series of physical and mental disorders like Ms. An and Xiao did, but it can also be "involved" in sexual intercourse, leading to disharmony in the life of a couple.

Hypothyroidism makes sexual desire “unable to call”

Let’s take a look at hypothyroidism first. As mentioned earlier, thyroid hormone plays an important role in regulating metabolism, growth and development, but Ms. An is already an adult, and the development of her brain and bones has long been finalized, so there is almost no negative impact. Therefore, the negative impact is mainly on metabolism, which is reflected in slow energy metabolism. , and thus cause a series of physical and mental discomforts, such as fatigue, laziness, depression, loss of sexual desire, etc.

Let’s talk about Ms. An. The doctor diagnosed her with sexual arousal disorder caused by hypothyroidism. The so-called sexual arousal disorder refers to a woman's lack of response to sexual stimulation, or lack of sex appeal, and is indifferent to sexual stimulation from the opposite sex, acting like a puppet.

There are at least two reasons why hypothyroidism has such consequences: First, if the thyroid function is hypothyroid, another hormone, prolactin, will inevitably be secreted too much, which will interfere with the secretion of gonadotropin. "Involved" ovarian function, in addition to symptoms such as excessive or too little menstrual blood, prolonged menstruation or amenorrhea, can also cause a decrease in the secretion of androgens, and androgens are the main driving force for initiating sexual desire; second, hypothyroidism causes metabolism in the body Decreased, energy production is slow, leading to physical and mental fatigue, which will naturally also greatly weaken people's interest in sex.

Similarly, hypothyroidism also has a considerable impact on male sexual desire. Due to the lack or insufficiency of thyroid hormone, the whole body metabolism is slow, the basal metabolic rate is reduced, oxygen consumption and heat production are reduced, and the ratio of testosterone to protein binding in the blood is increased, resulting in metabolic disorders of androgens and estrogen in the body, followed by sexual desire. hypotension, impotence and even fertility impairment. Survey data shows that about 80% of male hypothyroidism patients have unsatisfactory sexual intercourse, and this is the crux of the matter.

Hyperthyroidism, but not hypersexuality

Let’s talk about hyperthyroidism. Some people may guess: I understand that hypothyroidism causes a decline in sexual desire, and I understand it, but hyperthyroidism can’t cause it, right? Or does it also cause hypersexuality? No, isn’t Ms. Xiao a living example?

It turns out that the key to the normal initiation and maintenance of sexual desire lies in the proper proportion and balance of various related hormones in the body. As long as any one hormone is reduced or elevated, this balance will be disrupted, and sexual desire will inevitably be affected. For example, if there is too much thyroid hormone, various transmitters in the neurotransmitter system, including norepinephrine, dopamine, 5-hydroxytryptamine, acetylcholine, etc., will change, weakening their ability to regulate sexual expression. For another example, too much thyroid hormone can inhibit the secretion of pituitary gonadotropins, directly affecting women's menstrual physiology, causing menstrual disorders, such as reduced menstrual flow or even amenorrhea; menstrual periods lengthening, shortening, or becoming irregular, and sexual dysfunction. The emergence of is a matter of course.

As for the impact of hyperthyroidism on men’s sexual behavior, it is slightly different from that of women: women all show decreased sexual desire, while a few men show hypersexuality. According to the observations of clinicians, about half of male hyperthyroidism patients are accompanied by decreased sexual desire, and a quarter have erectile dysfunction (commonly known as "impotence"); only 10% to 20% show hypersexuality, and most of them are mild hyperthyroidism patients. The reason is that hyperthyroidism causes testosterone and estrogen levels to be out of balance, and excessive estrogen production is to blame. Therefore, male patients may also experience symptoms such as infertility, breast feminization, oligozoospermia, and decreased sperm motility while experiencing sexual dysfunction.

In short, whether a woman or a man has an unexplained decrease in sexual desire, it is absolutely necessary to go to the endocrinology department of the hospital to check thyroid function. The examination method is not complicated. Just draw blood and measure the T3 and T4 levels in the blood to find out the truth.

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