Infertility is not only a physiological issue. In fact, some kinds of common food in our daily diets can also lead to infertility. Such foods are mainly as follows:

First, coffee
Relevant scientific researches have concluded that: coffee has a direct impact on the pregnancy. It is showed from the experiment that, the possibility of pregnancy for the women who drink more than one cup of coffee every day is only half of those who do not drink coffee. As a result, scientists suggest that: if women plan to become pregnant, they should drink as less coffee as possible.

Second, carrot
We know that carrot is a kind of nutritious vegetable, which contains plenty of carotene, vitamins and other nutrients beneficial to human health. However, American gynecologists have found that, if women eat too many carrots, it will result in the excessive intake of carotenoids, which may cause amenorrhea and will inhibit the normal ovulation of ovary. Therefore, women who want to have children should not eat too many carrots.

Third, sunflower seeds
The protein contained in sunflower seeds contains certain component which can inhibit the function of testicle, cause testicular atrophy, and affect the normal reproductive function of male. As a result, young people at childbearing age should not eat too much sunflower seeds.

Fourth, alcohol
Scientific research shows that, the main component of alcohol is . Ethanol can increase the level of catecholamine in the body, which may lead to a variety of symptoms. For example, male will suffer from vascular spasm, testicular hypoplasia, and even testicular atrophy; while female will suffer from irregular menstruation, amenorrhea, loss of sexual desire, anovulation, and so on. All of these symptoms can lead to infertility.

Fifth, roast beef and mutton
According to the research, if the women always eat roast beef and mutton, their babies are more likely to suffer from mental retardation, paralysis or deformity. After investigation and modern medical research, it is found that this is caused by toxoplasma infection. As a result, young people at childbearing age should keep away from roast beef and mutton.

However, what we should note is that, most of the nutrients contained in coffee, carrot, and sunflower seed are essential to human body, so we just need to reduce the intake amount of these foods. But roast beef and mutton has no benefits to human body, so it is better to totally keep away from this kind of food.