In the past 50 years, the male reproductive health is the largest debate men in the global scope semen quality of decline. Denmark scholars niels Sally buck have comprehensive analysis on dr. 1938-1990, global 21 countries nearly 15000 people of the semen quality report, the results found that men's sperm count in 50 years down more than 40%. Among them, the semen amount was reduced by 20%, sperm density rose from 1940 in 113 million to reduce per ml to 1990 in 66 million. After this, Europe, America, and Asia to many countries and regions were released in comparative data, most support the male sperm quality declines conclusion.
Chinese scholars research also have reported similar results. The national population and family planning committee of science and technology research institute has 1981-1996 years of published, comes from Beijing, Shanghai, tianjin and 39 city and county, 256 documents were 11726 people sperm analysis data research found that men in China of the semen quality is an annual rate of 1% drop, sperm quantity drop of 40% or more. Also, the higher the degree of industrialization in the region, sperm quality drop the faster the speed.
In recent years, urology and by outpatient service clinical practice also see, sperm quality to the fall in more and more patients for male infertility and attendance. Cause the reasons of the decrease of sperm quality, some are congenital or acquired disease, some are life some human factors caused. Among them, the following 10 kinds of factors has set up a file in the study that the sperm quality the biggest influence on:
1 food packaging and cosmetics
The German association released by news bulletin said that in the past few decades, the global male sperm the reduction of the number of possible and a called phthalic acid esters of chemical material relevant.
Phthalic acid ester is a kind of can play the softening action of chemicals. It is widely used in toys, food packaging, ethylene floor, wallpaper, cleaner, lubricating oil, nail polish, hair spray, soap and shampoo in hundreds of products. Research shows that, phthalic acid ester can disturb the endocrine, make the decrease in the number of male sperm, sports ability is low, form abnormal, serious still can cause testicular cancer, is the male reproductive problems caused by the "culprits".
In cosmetics, nail polish of phthalic acid esters content is the highest. It will be through the female respiratory system and skin to enter the body, risk to their future fertility baby boy's reproductive system.
Phthalic acid ester will through the plastic containers packing of food and water into the human body, such as canned food in coating, recycling of milk and water bottle, etc. Research shows that, canned food, the higher the fat content of the food more easily polluted, such as pork, anchovies, sardines, etc. The fetus, babies and children the most sensitive to it during puberty, health is also the most vulnerable to attacks.
In order to reduce phthalic acid ester for the harm to human body, usually to pay attention to had better not use foam plastic containers bubble instant noodles, don't use including PVC plastic container, heat the food in the microwave oven. Right way is to put the food away in heat-resistant glass or ceramic vessels of heating.
2 the exhaust
In automobile exhaust contains a large number of harmful substances, such as sulfur dioxide and carbon dioxide, etc. The human body long time to contact with these material, will occur accumulating damage, not only influence the reproductive health, and also may increase the incidence of the disease such as cancer.
The most serious is, in automobile exhaust contains of dioxin is extremely strong environmental endocrine disturbance material, can make the man's testicles form change, the decrease in the number of sperm, who was born to reduce fine ability.
Three cigarette, wine
Smoking has always been the great enemy of the health effects of the influence of the semen also obvious. Very early has foreign studies show that smokers and non-smokers, compared to the main index of semen quality have been significantly reduced, sperm deformity rate increases, semen increase the number of white blood cells. Tobacco production in nicotine and more aromatic hydrocarbons ring will cause testicular atrophy and sperm forms change.
Alcohol to the human body the liver and men have direct impact of testicles. Research found that chronic alcoholism, patients will appear testicular atrophy, leading to a decline in the quality semen. Therefore, the male must avoid regular binge drinking.
4 estrogen
Estrogen for the male reproductive system will generate obvious effects, including influence the level of androgens, cause testicular tissue structure change, cause testicular cancer, reduce the number of semen sperm, killing male breast development, bring about endocrine disorder. Male short-term use of drugs will not contain estrogen for reproductive system have obvious influence, but the long-term contact with life contains estrogen items, will cause bigger reproductive health hazard. As part of the male skin care at will use when women cosmetics. These developed specifically for women in the cosmetics, some contain certain estrogen, use for a long time can on the male reproductive health a lot of damage, cause the function is low.
5 trace elements
With the male fertility related trace elements include zinc, selenium, copper, calcium and magnesium, etc. Zinc is reproductive system of important elements, zinc will affect adolescent male reproductive organs and secondary sex characteristics growth, lower sperm activity ability, weaken the immune function, make men likely to develop prostatitis, the epididymitis and infectious diseases. The lack of selenium, will make the body peroxide increasing concentration, cause on the male reproductive system and testicular damage. Therefore, men at ordinary times should eat more contain zinc, selenium to higher food, such as milk, corn, black rice, black beans, etc.
6 temperature
High temperature testicles produce to damage, but how high temperature and the temperature in the exposure time how long, will influence of testicles, currently in the field is still controversial. Animal experiments, will be 38.5 ° C male animals on 55 minutes, to fertility will fall. In real life, men should be to avoid as far as possible in the high temperature environment stay too long time, such as washing with hot bubble bath sauna and etc.
7 drug
Cancer, hormone tidy, antibiotics and drugs can damage a man gonads function, cause sperm quantity and quality drop, or through the influence of the endocrine function to cause sexual dysfunction. The drug to the influence of male fertility, the kinds of medicine, by dose, period of treatment, the patient's age and other factors. Generally use more dosage of drugs, the longer the treatment, the patient's age is smaller, the birth of the more serious damage function, restore fertility function need time is also more long.
At present, the sex on the social health flood, some contain sex hormones or similar composition, could affect the normal life of the testes of pure function, and not the unmarried when the choice should be carefully.
8 noise
Along with the development of modern, city noise to the health effects of more outstanding. Noise belongs to a kind of environmental pollution. In recent years, some experts suggest a "environmental hormone" theory, and points out that the environment where there are like hormone can affect human body endocrine function as the chemical substances, noise is one of them. It will make human body endocrine disorder, cause abnormal sperm and semen. Long time of noise pollution can cause the male sterility; For women, it will lead to abortion and fetal malformation.
9 radiation
Radiation to the health of human body has to make sure that there is clear influence. Large doses of radiation can cause testicular tissue structure change, increase sperm deformity of the rate, reduce the number of sperm, an important index sperm density, etc. But, small doses of radiation would cause infertility, and there were no exact research results. Our daily use of electronic devices, such as mobile phones, computers and so on whether it will cause infertility, scholars in a lot of controversy. Therefore, men should decrease as far as possible at ordinary times with emitters of contact, but also need not too nervous.
10 drugs
People take drugs in a few in our country, some drugs, such as marijuana, cocaine and semen quality to have influence. Marijuana in the blood can be reduced, and the sperm density androgen levels drop in male breast development; Cocaine lifts sperm density decreased.
Sperm quality relationship with human existence multiply greatly important problem. For these factors, on one hand we should take highly vigilant, timely attention and avoid; On the other hand, also call on the whole society all power to improve our living environment. Otherwise, it will be like American scholars theo cole grace "in the future we were stolen in his book, call it: infertility might be a wide range of epidemic, the future of the man be completely lose fertility......
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