The hazards of drinking on men mainly include gastric mucous membrane damage, decreased sexual function, low sperm viability and so on. 1. Gastric mucous membrane damage: long-term drinking can cause gastric mucous membrane damage, causing chronic gastritis, gastric ulcer, and in severe cases, gastric hemorrhage and gastric perforation. 2. Decline in sexual function: long-term alcohol consumption by men will cause a decline in male sexual function, which can be confirmed from clinical observation or daily practice. Alcohol can cause nerve paralysis, which can easily lead to erectile dysfunction and premature ejaculation. In addition, alcohol will also directly inhibit the secretion of testosterone, so that the level of androgen decreases, thus causing low sexual function. 3. Low sperm viability: Ethanol in alcohol will increase the concentration of catecholamines in the blood, affecting the maturation of sperm. In addition, it will cause the spermatogenic epithelial cells to atrophy, thus affecting sperm production. Drinking also damages the brain, liver, etc. Excessive drinking also tends to lead to obesity, so it is recommended that men civilize their drinking, and it is best to quit drinking so as not to affect their health.