1. Smoking can cause cardiovascular diseases, aggravate arteriosclerosis of aorta and coronary artery, and eventually lead to coronary heart disease. Carbon monoxide in cigarettes enters the blood and immediately combines with hemoglobin, which reduces the oxygen transfer function. Smoking a box of cigarettes every day is equivalent to losing 200ml of blood.
Smoking can lead to lung cancer. Data at home and abroad show that the incidence of lung cancer in smokers is 15-30 times higher than that in non-smokers. The incidence of oral cancer, nasopharyngeal cancer, gastric cancer, bladder cancer and breast cancer is several times higher than that of non-smokers.
3. Smoking can also cause other diseases. The incidence of bronchitis and digestive tract ulcer of smokers is 2-3 times higher than that of ordinary people. Smoking can also damage the spirit, distract attention, and lead to neurasthenia and premature aging.
Smoking has a more serious impact on infants than adults. Studies have shown that children born to smoking mothers are more likely to have mental retardation, morbidity and deformity; Nicotine seeps into the carcass through the blood, causing the baby to suffer from liver cancer. Smoking also pollutes the environment and hurts people around. The cancer incidence rate of close relatives and close friends of smokers is 3-4 times higher than that of non-smokers.
Alcohol is an inhibitory drug, and its chemical action will slow down or even stop the physiological reaction of sexual excitement and orgasm. For men, alcohol can inhibit sexual excitement, reduce erectile ability, reduce or lose the ability of ejaculation and orgasm; For women, sexual excitement, vaginal blood volume and orgasm will decrease with the increase of alcohol concentration.
Long-term drinking will cause obvious physiological changes, affect sexual life, and even the physiological function will not be restored after abstinence. For example, occasional drinking will temporarily reduce testosterone and sperm count in men, while long-term drinking will lead to permanent male infertility and testicular atrophy. In addition, in addition to the decrease of testosterone, female hormones will also increase, resulting in irreversible breast enhancement (male and female emulsification).
The harm of drinking varies from person to person, but there is evidence that excessive drinking by women can lead to ovarian atrophy, irregular menstruation and infertility.
Alcohol can also cause mental problems. For some people, alcohol can not only reduce their sexual inhibition, but also make people who are shy or guilty of sex show their sexual excitement and desire. Some people will pretend to be crazy by drinking and do things that they dare not or will not do when they are awake.