According to the World Health Organization, male fertility declined by a factor of 1 in the 50 years between 1940 and 1990. Statistics from China show that the fertility of Chinese men is decreasing at a rate of 1% per year. Among the factors that affect male fertility, food is a common and easily ignored factor. 1, alcohol Research has proven that the main component of alcohol is ethanol, ethanol can increase the body’s catecholamine concentration, vascular spasm, testicular hypoplasia, and even testicular atrophy, affecting sperm function, but also easily lead to the next generation of deformities. 2, garlic has a significant role in killing sperm, young people of childbearing age, such as eating too much, has a negative impact on fertility, so should not eat more. 3, roast beef and lamb research found that some women who love to eat roast lamb gave birth to children suffering from mental retardation, paralysis or deformities. After investigation and modern medical research, these women and their deformed children are victims of Toxoplasma gondii infection. Toxoplasma gondii infection is also called toxoplasmosis. This parasite, invisible to the naked eye, causes infections mainly in humans, animals and poultry. The developmental stage of the protozoa that causes disease in humans and animals is called the trophozoa, which is named after its microscopic appearance of an arch. Toxoplasmosis can infect at least 60 species of livestock or poultry, and people can often be infected when they have access to these livestock and eat the uncooked meat of these animals and poultry. 4, cottonseed oil long-term consumption of cottonseed oil, can seriously affect reproductive function. Experimental studies have shown that rats consuming feed containing cottonseed oil for about 4 months, the testes shrunk significantly, spermatogenic cells significantly reduced or even disappeared. Adult men taking the extract of cottonseed oil cotton phenol (cotton phenol was used as a male contraceptive) for 40 days, 60-70 mg per day, all sperm were killed within a short period of time, and gradually disappeared from the semen. 5, sunflower seeds Sunflower seeds contain a protein part of the testicular inhibitory components, can cause testicular atrophy, affecting the normal reproductive function, so young people of childbearing age should not eat more. 6, coffee Coffee has a direct impact on conception, more than one cup of coffee a day for men, the possibility of pregnancy is only half of those who do not drink such beverages. 7, celery celery has inhibited the role of sperm production.