Coffee, researchers from the National Institute of Environmental Health Sciences concluded in a study of 104 women hoping to conceive, had a direct effect on conception. Among these women, those who drank more than one cup of coffee a day were only half as likely to become pregnant as those who did not drink such beverages. Therefore, they suggest that women should drink less coffee if they plan to get pregnant. Carrots, carrots are rich in carotenoids, many vitamins and other nutrients that are beneficial to the body. Studies have found that when women eat too many carrots, the high intake of carotenoids can cause amenorrhea and inhibit the normal ovulatory function of the ovaries. Therefore, women who want to have children should not eat more carrots. Sunflower seeds, sunflower seeds contain a protein component that inhibits testicular components, which can cause testicular atrophy and affect normal reproductive function, so young people of childbearing age should not eat more. Alcohol, scientific research has proven that the main component of alcohol is ethanol, ethanol can make the body catecholamine concentration increased, vascular spasms, testicular underdevelopment, and even testicular atrophy, sperm function will be structural changes, testosterone and other androgen secretion is insufficient, there will be a thin voice, breast enlargement and other feminine performance. Such people are prone to male sterility, and even if they have children, the possibility of malformations in the next generation is higher. In women, this can lead to irregular menstruation, amenorrhea, variation in egg production, lack of libido or cessation of ovulation, etc. Garlic, eating more garlic kills the positive energy of people, and also has an obvious role in killing sperm, so young people of childbearing age who consume too much has a negative impact on fertility, so they should not eat more. Roast beef and mutton, eating roast beef and mutton is the habit of residents of Inner Mongolia, Xinjiang and other places, some people found that a few women who love to eat roast mutton gave birth to children suffering from mental retardation, paralysis or deformities. After investigation and modern medical research, these women and their deformed children were victims of Toxoplasma gondii infection. Toxoplasma gondii infection is also called toxoplasmosis. This parasite is invisible to the naked eye and causes infection mainly in humans, animals and poultry. The developmental stage of the protozoa that causes disease in humans and animals is called trophozoa, which looks like a bow under the microscope, hence the name. 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 uncooked meat from these animals and poultry. Some people survey the main supply of meat livestock infection rate is: 11.32% of live pigs, 34.5% of sheep, 11.8% of chickens, 9.4% of ducks; if you slaughter livestock and poultry after not washing your hands and grab something to eat, mix the dumpling filling to taste the salty people, hands grab raw meat and then go to grab cooked food, vegetable board raw and cooked, knives raw and cooked mixed, from the cold storage to take raw meat, sell meat or roast meat people …… are ready to be contaminated by Toxoplasma gondii trophozoites. As for women who love to eat grilled meat, they are just one of the links of easy infection of toxoplasmosis. A woman infected with Toxoplasma gondii may have no conscious symptoms and when she becomes pregnant, the infected Toxoplasma gondii can infect the fetus through the uterus and cause fetal malformations. Toxoplasma gondii infection is a major factor in the occurrence of fetal malformations. Therefore, Toxoplasma gondii antibody testing before marriage or pregnancy is necessary. The long-term consumption of cottonseed oil can cause sunburn, with symptoms such as post-sunburn attacks, general weakness or less sweating, burning, flushed skin, panic and shortness of breath, dizziness, numbness of the limbs, and loss of appetite. A more serious effect is the damage to the reproductive system. Experimental research shows that rats consuming feed containing cottonseed oil for about 4 months, the testes shrank significantly, sperm cells significantly reduced or even disappeared, the uterus shrunk, the endometrium and glandular atrophy, ovaries mildly atrophied, the kidney parenchyma cells have mild swelling. Adult men taking cottonseed oil extract cotton phenol for 40 days, 60-70 mg per day, all sperm are killed in a short period of time and gradually disappear from the semen; women can lead to amenorrhea or uterine atrophy. Therefore, young people of childbearing age should not be consumed for a long time. It should be noted that the nutrients in foods such as coffee, carrots and sunflower seeds are essential to the human body, this article only limits the amount of food, while roast beef and lamb, hairy cottonseed oil, etc. should be included in the scope of the ban.