The declining fertility of modern people has become a medical consensus, and men are the hardest hit. Studies at home and abroad in recent years have shown that the quality of male semen is significantly lower than a decade ago. What factors are actually wearing down male fertility? In addition to environmental factors, dietary factors, anxiety and other adverse psychological stress, “modern life disease” can not be ignored. In particular, the modern way of work leads to sedentary, likely to “sit” out infertility. The actual fact is that you can find a lot of people who are not able to get a good deal on a lot of things. The hazards of sedentary lifestyle do not appear overnight. Many people do not take it seriously, but do not know that many major diseases are accumulated slowly, such as obesity, cardiovascular disease, etc.. Due to stagnation, body functions slowly degenerate, leading to disease after disease. The impact of sedentary on men’s health is even greater. The production and maturation of sperm in the testicles requires a cooler temperature. When sitting, the temperature of the perineum rises, resulting in high testicular temperature, which affects sperm development and maturation. On the other hand, the sedentary causes poor blood flow to the perineum and pelvic floor, stagnant blood in the perineum, which in turn leads to blockage of the prostate gland and poor drainage of glandular fluid. Thus, sedentary can cause varicocele or make it worse. Varicocele affects fertility as well as “sexual well-being” Varicocele is a common genitourinary system disease in men and is also the main cause of male infertility. Shen Changli pointed out that the incidence of the disease accounts for 10% to 15% of the normal male population, and 19% to 41% of male infertility, while 65% of patients with varicocele also have poorer semen quality than normal. Patients often do not receive timely diagnosis and treatment due to lack of self-perceived symptoms, which eventually leads to impaired spermatogenesis in some patients. How does varicocele affect male fertility? Mainly through the following 3 aspects: 1, due to poor testicular blood flow, venous blood retention, scrotal temperature is 0,6 to 0,8°C higher than normal, affecting spermogenesis and maturation, which can lead to less, weak spermatozoa, or even no sperm. 2. When the left spermatic varicose vein suffers, the blood from the adrenal vein and renal vein will also flow back to the testicular tissue, and some substances contained in it, such as catecholamines, can have toxic effects on the testicles, causing the spermatogenic epithelium of the spermatogenic tubules to delaminate, the arrangement of spermatocytes and sperm cells to be disordered, the number of sperm to be progressively reduced or even lost, the morphology to be abnormal, the vitality to be low, immature sperm to be prematurely shed, and the sperm in the epididymis to be premature. The number of sperm is progressively reduced or even lost, the morphology is abnormal, the vitality is low, and immature sperm are shed prematurely. 3.Because there are abundant anastomosing branches between the venous system of bilateral testes, the spermatogenic function of testes will be affected by each other regardless of whether the varicocele is on one side or both sides. Some people may question: some people have varicocele, but they can have children normally, right? Associate Professor Shen Changli said that varicocele does not necessarily cause infertility, moreover, varicocele has different clinical manifestations and its treatment methods are different. For minor varicose veins, the clinical symptoms are not obvious, especially for unmarried young people, or married people with normal fertility, they can be left untreated. For mild varicoceles, medication and scrotal brace can be used as comprehensive treatment; for moderate to severe varicoceles, surgery is generally advocated as the main treatment; for couples with fertility requirements, comprehensive consideration is also needed according to the situation of the female partner, and artificial insemination or IVF can be chosen according to the situation of both spouses. If you have varicocele but have no thought of having offspring, do you still need treatment? It is still advisable to consult a doctor first. This is because in some cases, long-term varicocele can cause testicular atrophy, leading to a decline in sexual function, impotence, premature ejaculation, even if you do not intend to have offspring, but also affect the “sexual well-being”. How to reduce the “killing power” of sedentary? In work and life, men should sit for the right length of time, soft and hard, hot and cold moderate. 1, sedentary after a deep squat. After 40-50 minutes of sitting, get up and move around, walk or squat for 5 minutes and then continue to work, which can reduce the pressure on the prostate and scrotum, to avoid blood pooling, but also to cool the perineum. 2, the selection of seats with care. Choose the right soft and hard seat, the buttocks can not fall into the seat, but the chair seat can not be too hard, so that the buttocks feel a sense of pressure. May be placed on the hard bench a cotton pad. 3, the hips are difficult to tolerate “fire and ice”. Some people like to sit in the air-conditioned room bamboo chair cushion, enjoy the feeling of cold hips. But sitting in a cold chair for a long time is not good for health. You should try to avoid saunas or hot springs, so as not to testicular temperature is too high to affect the testicular spermatogenic function.