Soybean products are rich in methionine, which can be converted into cysteine by enzymes. It will damage the endothelial cells of the arterial wall, make cholesterol and triglycerides deposit on the arterial wall, and lead to the formation of arteriosclerosis.

Second, promote gout attacks.

Tofu contains more purines, and gout patients with abnormal purine metabolism and patients with elevated blood uric acid concentration are prone to gout attacks.

Third, lead to iodine deficiency.

Soybeans that make tofu contain saponin, which will accelerate the excretion of iodine in the body. Long-term excessive consumption of tofu can easily lead to iodine deficiency, leading to iodine deficiency disorders.

Fifth, increase the burden on the kidneys.

Under normal circumstances, protein, a plant that people eat in the body, undergoes metabolism, and finally most of it becomes nitrogen-containing waste, which is excreted by the kidneys. When people get old, the ability of the kidneys to excrete waste decreases. At this time, if you don't pay attention to your diet, eat a lot of tofu and take in too much plant protein, it will inevitably increase the nitrogen-containing waste produced in your body and increase the burden on your kidneys, which is not conducive to your health.

Sixth, it is harmful to sperm.

A preliminary study in the laboratory of British scientists found that a phytochemical in soybean may be harmful to sperm. A phytochemical found in soybean may be harmful to sperm and affect male fertility, according to British researchers, Reuters reported.

Research by Lynn Fraser, a professor at King's College London, shows that genistein, which can imitate estrogen, will affect the sperm of mice. Fraser said at a fertility conference: "Human sperm is more sensitive to genistein than mouse sperm."

Fraser found in the experiment that a small amount of this chemical can destroy male sperm. When the sperm swims to the egg, the male sperm will be "exhausted" and lose its fertility. The effects found in the laboratory on sperm may not be directly related to real life. But Dr Allen Percy of the University of Sheffield in the UK said it was worrying whether these chemicals would affect mature sperm.

Women who are preparing for pregnancy should be careful to eat soy products. Fraser also said that if women eat soybeans and other foods rich in genistein, it may have a greater impact on men's fertility, because this chemical is likely to affect sperm when it enters women's bodies and makes them pregnant. Fraser explained: "It may be more dangerous for a mother to be exposed to this substance than for a father."

Although this is a preliminary study, Fraser speculates that these conclusions may affect women who are trying to get pregnant. "According to our research, if you have the habit of eating a lot of soy products, you should limit your diet during ovulation," she said at the meeting of the European Association of Human Reproduction and Embryology. Linking special genes to help the elderly get pregnant When British Prime Minister Blair's wife Shelley gave birth to her fourth child Leo at the age of 45, Blair's "ability" was widely praised by British society.

But Leo was probably born because of Mrs Blair's genes, not the Prime Minister himself. Recently, scientists have found a special feature among women who can give birth naturally after the age of 45.