The Harmful Effects of Smoking
★Pregnant Women Smoking is Harmful to Both Them and the Child
According to a recent study, women who smoke during pregnancy are not only bad for their own health, but also have a direct impact on their children's behavior.
According to a recent study, women who smoke during pregnancy are not only bad for their own health, but also have a direct impact on their children's behavior later in life.
Dr. Judith Brooke of Mount Sinai School of Medicine in New York, who led the study, said the findings confirm previous beliefs that women who smoke during pregnancy give birth to children who grow up to be irritable and even criminally inclined.
The researchers surveyed a number of children around the age of 2 and found that whether or not they exhibited negative behavior depended directly on how much their mothers smoked during pregnancy. The more mothers smoked during pregnancy, the more likely their children were to be impulsive, have temper tantrums, and were often unwilling to listen to others.
The researchers concluded by urging mothers not to smoke during pregnancy, for the sake of their children and for themselves.
★One Cigarette Takes 11 Minutes Off Life
Smoking one cigarette can take eleven minutes off a person's life, according to a new study, and smoking a pack of twenty a day can take about three hours and forty minutes off a person's life.
The estimate was based on a man who started smoking at age seventeen and died at the average age of seventy-one; assuming he smoked fifteen cigarettes a day, as does the average British addict, he would have consumed three hundred and eleven thousand six hundred and eighty-eight cigarettes in his lifetime. The average smoker will die six and a half years earlier than the non-smoker.
A similar study done decades ago concluded that each cigarette consumed reduced life expectancy by five minutes. Since then, however, the harm to life expectancy from cigarettes has increased because non-smokers apparently live longer.
About a third of people in Britain now smoke, and about 120,000 people a year die from smoking-related illnesses, two-thirds of which are cancer and heart disease. The researchers hope the new study will encourage more people to make up their minds to quit smoking at the dawn of the new century.
The figures show that if a person smokes 20 cigarettes a day, he loses one day of life for every week he smokes, and if that's not bad enough, he warns, it can also lead to an agonizing death or a more bedridden life.
★Smoking Affects Ulcer Healing
Many people with ulcer disease who are smokers don't heal their ulcers despite long-term medication. The reasons for this may be manifold, but smoking is one of the important factors.
The effect of smoking on ulcers has three main points:
1, increase the incidence. Japanese scholars found that the incidence of ulcer disease in smokers is 2 to 4 times that of non-smokers.
2, reduce the cure rate. Some people have done comparisons, to give two groups of ulcer patients take the same drugs, the non-smoking group's cure rate of 90%, the smoking group is only 63%.
3, easy to cause relapse. Comparison of the above groups of patients one year after stopping the drug, the smoking group relapse rate of 84%, the non-smoking group for 53%.
★"Secondhand smoke" is worse than a tiger
U.S. medical researchers have recently published a study pointing out that passive smoking, commonly known as "secondhand smoke" is even more dangerous than the original outside world, and that some women who live with smokers*** have a higher risk of developing lung cancer than those who live with smokers. Some women who live with smokers*** are six times more likely to develop lung cancer.
The smartest way to prevent lung cancer is to stay away from cigarettes and smoke. At the same time, not only try not to smoke, but also do not let yourself inhale "second-hand smoke", even in the public **** place should also try to avoid those who swallowed smoke, in order to avoid the harm of "second-hand smoke".
★Smoking more cardiovascular "bad"
Smoke on the human body in the many hazards also include cerebrovascular disease. According to a long-term research study found that: 30-year-old to 40-year-old smokers than non-smokers cerebrovascular disease incidence rate of 5 times higher than 50 years old to 60 years old, 3 times higher. And because of cerebrovascular disease and death is also higher than non-smokers 2 times to 6 times, and the amount of smoking has a close relationship.
Cigarettes contain more than 400 chemicals, many of which are closely related to cerebrovascular disease. These include carbon monoxide. Long-term smokers blood carboxyhemoglobin can be as high as 10% to 15%, thus reducing the ability of red blood cells to transport oxygen, forcing the bone marrow to produce too many red blood cells to make up for the shortfall. The increase in red blood cells increases the viscosity of the blood. Smoking also increases adrenal secretion, which contributes to platelet aggregation, also contributing to increased blood viscosity. The increase in blood viscosity makes the blood flow slow, in which the red blood cells and platelets are easy to gather into clumps, blocking the blood flow, resulting in ischemic cerebrovascular disease.
Cigarettes contain nicotine, which is known to all, and it is also the culprit of ischemic cerebrovascular disease. Nicotine can make the nerve endings and adrenal glands release adrenaline and norepinephrine, these two substances can make blood vessel constriction, thus increasing the resistance to blood flow, blood flow slows down easy to sedimentation. In the vasoconstriction of vascular endothelial cell gap expansion, so that low-density lipoprotein through the expanded gap into the arterial endothelial layer to form atherosclerotic plaque. And atherosclerosis is one of the risk factors for cerebrovascular disease.
Each cigarette contains 0.1 micrograms to 0.2 micrograms of cadmium metal, cadmium can make blood pressure. In addition, carboxyhemoglobin makes myocardial hypoxia caused by myocardial damage, so that the heart function is damaged. These are also risk factors for cerebrovascular disease.
Smoking is not an alarmist saying that it is harmful. China's adult male 60% have a history of smoking, and there is a gradual increase in the trend, and to the development of young people. Quit smoking is not difficult, according to the American Association for Cancer Research survey of nearly 160,000 people, about half of the smokers once quit successfully, 95% of which did not take any smoking cessation drugs.
★Smoking men have a six-fold higher chance of infertility
A medical research team at the National University of Singapore analyzed semen samples from men with normal fertility and infertility, and came to the conclusion that smoking lowers sperm counts and weakens individual sperm.
Previously, when the team studied infertility in men, it only analyzed sperm samples from infertile men, but not normal men's sperm as well.
The researchers compared the sperm samples of 240 men with normal fertility with those of 218 infertile men and found that smokers with lower-than-average sperm counts were six times more likely to be infertile than non-smokers.
The team also found that smokers with normal sperm counts were 16 percent more likely to be infertile than non-smokers with similar sperm counts. In other words, a normal sperm count alone is not enough for smokers to have children.
Noel, a member of the research team, said that fifty years ago, men had an average of 130 million sperm per milligram of semen, but today, there are only 65 million per milligram.
Experts say a low sperm count is just one of the key signs of male infertility, with other factors including the sperm's mobility and normal shape.
★Men's Smoking Loss of Quality of Life
Some bad habits can also cause male infertility, and smoking is one of them. Scientific research and clinical data show that: long-term smoking and smoking more than 20 cigarettes a day, the majority of people's sperm activity rate (force) is less than 50%, activity is also significantly reduced. The decline in sperm quality is even more pronounced in those who smoke and drink.
According to Canadian researchers, men who smoke not only have lower sperm quality than non-smokers, but also have significantly lower sex drive. In a questionnaire study involving 290 couples, they asked the couples surveyed to answer questions about their smoking habits, marital history and sex life, including the number of times they had sex and their level of satisfaction. All of the women in that survey were non-smokers. However, in 158 of the couples, the men smoked at least 30 cigarettes a day for more than seven years.
The results showed that the number of times smokers had sex averaged seven times a month; while non-smokers averaged 11.6 times a month. And non-smoking couples had significantly more satisfying sex lives than smoking couples. If the maximum score for a fully satisfying sex life was set at 10, the non-smokers scored 8.7 and the smokers scored 5.2.
In addition, the results of semen analysis showed that sperm count, vitality and longevity, smokers compared with non-smokers, the former sperm count is reduced, the vitality of the sperm is weakened, and the extent of the impact of the positively proportional to the number of years of smoking.
Tobacco has a variety of harmful substances, of which nicotine is particularly toxic, the content of about 1 mg in 1 cigarette. Nicotine has inhibited the secretion of sex hormones and spermicide. In the smoke deep shrinkage or a large number of smokers in the urine extract, containing induced cellular aberrations and inhibition of lymphocyte deoxyribonucleic acid synthesis of substances, so that the testicular spermatogenic epithelium is poisoned, so that semen quality is reduced. Harmful substances in tobacco, but also through the inhibition of testosterone secretion and damage to the walls of penile arteries and other effects, can lead to erectile dysfunction, resulting in reduced ability to have sexual intercourse, or even the penis can not be erected. At the same time, tobacco toxins can hinder the combination of sperm and egg, greatly reducing the chances of women's fertilization.
Smoking can also form a localized range of high concentrations of air pollution, so that the wife and family members to inhale the "second-hand smoke", not only affect their own fertility, and surveys have shown that the incidence of serious congenital malformations of infants with the father's increase in smoking and increase. In view of the above hazards of smoking, please quit smoking as soon as possible! This is especially true for infertile patients.
★Women who smoke lose their health and beauty
It is an indisputable fact that smoking is bad for your health. It certainly doesn't take special care of women, but only harms them more y, as women are more tender than men.
Zhu Yuanjue, a member of the National Committee of the Chinese People's Political Consultative Conference (CPPCC) and a professor of respiratory medicine at the Union Hospital, told the author that in the 1960s and 1970s, the proportion of women who suffered from lung cancer was very small, but now the number of women suffering from lung cancer has risen significantly, the main reason being the surge in the number of women who smoke. There are two other major types of harm to breathing, chronic bronchitis, emphysema, these two diseases are 30% caused by smoking.
Additionally, according to experts, because women have a reproductive system and the characteristics of the conception of offspring, so it suffered more serious harm than men. In other words, all the aspects of smoking that harm men are adapted to women, in addition, smoking also brings a lot of additional harm to women:
Smoking will adversely affect the respiratory tract of the next generation;
The risk of ectopic pregnancy in women who smoke is 40% higher than that of non-smokers;
The likelihood of a woman who smokes is 2.7 times higher than that of a woman who doesn't smoke to suffer from infertility, and 50% higher than that of a woman who suffers from cervical cancer.
Smoking women are 2.7 times more likely than non-smokers to suffer from infertility and 50% more likely to suffer from cervical cancer;
Women who have smoked for more than 20 years have a 30% increased risk of breast cancer;
Smoking can also cause women to age prematurely: premature wrinkles appear on the lips and at the corners of the eyes, yellowing of the teeth, roughness of the skin, loss of the elasticity of the appearance of richness and moisturizing, and even growth of a beard.
Smoking also greatly increases the likelihood of menstrual cramps, weak bones, urinary incontinence, and decreased breast milk production.
In addition, according to a survey published in the Chinese Medical Forum, pregnant women who smoke more than 10 cigarettes a day have a preterm birth rate of 44.8 percent, twice that of non-smokers. The U.S. "Federal Centers for Disease Control" after 10 years of research results proved that mothers who smoked during pregnancy, 66.7% of their babies were born with a low birth weight, less than 2500 grams. Even if such babies barely survive, they may become mentally retarded or demented. And a survey of more than 60,000 female smokers by British academics found that the probability of babies with birth defects caused by smoking in pregnant women is much greater than in the general population.
Whether to choose health and beauty, or to choose smoke, smart people, you just watch it.
★Smoking and Cancer
Smoking causes about 85% of lung cancer deaths; 80% of laryngeal, pharyngeal, oral and lip cancer deaths; 75% of esophageal cancer deaths; 45% of bladder cancer deaths; 30% of cervical and pancreatic cancer deaths and 20% of stomach cancer deaths. Cancer deaths are two times higher among smokers than non-smokers; and up to four times higher among heavy smokers.
Smoking causes cancer not only at the site of direct contact (mouth, pharynx, larynx, and lungs) but also at distant sites. For example, almost 50% of male bladder and kidney cancer deaths are due to smoking, and the risk of bladder and kidney cancer in smokers is two to three times higher than in nonsmokers. In the United States, 30% of the 4,600 cervical cancer deaths each year are due to smoking. Passive smoking (including polluted air) has also been shown to be a cause of cancer in non-smokers, and is especially harmful to children!
★Smokers' spouses consume more fat
Researchers at Arizona State University noted at the 2000 Experimental Biology Annual Meeting in San Diego this week that the spouses of smokers consume far more total daily fat in their diets, as well as saturated fat, than do spouses of nonsmokers.
The researchers, who analyzed a variety of nutritional data from 500 married couples between 1994 and 1996, found that nonsmokers married to male addicts consumed more total dietary fat and lower fiber and vitamin A intake than women married to nonsmokers. At the same time, men who were non-smokers but married to a female addict were worse off in terms of dietary composition. The findings showed they not only consumed more fat per day than men married to non-smoking women, but also had significantly higher daily intakes of alcohol and cholesterol, but lower intakes of vitamin A, fiber, and calcium.
The researchers analyzed these results, noting that part of the reason is because women are usually responsible for the family's dietary arrangements, so if a woman smokes, her spouse's diet is more likely to show signs of being poorly structured than the spouse of a man who smokes.
The only solution, the researchers said, is for the non-smoking spouse to openly ask the other spouse to quit smoking and, based on that, to improve the family's diet by reducing the frequency and amount of alcohol consumption and by consuming more vegetables and fruits. The researchers concluded that an improved diet would help couples avoid cancer, heart disease and a host of other illnesses.
★Smoking after a meal is very harmful
"A cigarette after a meal is better than a living god" is a famous saying among smokers. But according to research results show that: after meals, gastrointestinal motility increased, blood circulation accelerated, the ability to absorb the strongest smoke. At this time to smoke a cigarette, the harmful substances in the smoke than usual easier to enter the bloodstream, the amount of poisoning is greater than the usual smoke 10 cigarettes in total.
★Smoking damages male spermatogenesis
Xinhua News Agency, Harbin, a medical study recently found that smoking can lead to male rats spermatogenesis is seriously impaired, sperm fertility is greatly reduced, the results of this study for further research on the corresponding hazards of smoking on men provide important clues.
Zhang Cheng, a master's degree student in urology at the First School of Clinical Medicine of Harbin Medical University, has been working on a study of the effects of smoking on the male reproductive system, and he placed 20 male rats in a special poisoned canister, and allowed them to passively "enjoy" 60 minutes of top-quality cigarettes every day (10-12 cigarettes each time), and then, eight weeks later, removed 10 of the rats. After 8 weeks, the testes and epididymis of 10 of the rats were removed; the testes and epididymis of the other 10 rats were also removed after 48 days of "quitting". He dissected the testes and epididymis into individual cells, and then utilized advanced flow cytometry technology to study the changes in the sperm DNA content of the rats at the molecular level. After dissecting and comparing the two groups of smokers with normal rats, he found that the spermatogenic cells and sperm DNA maturity of the first 10 rats were much lower than that of the normal rats, whereas the spermatogenic cells and sperm DNA maturity of the other 10 rats who "quit smoking" were much lower than that of the normal rats. The spermatogenic function of the other 10 "quit-smoking" rats has been restored compared with the first 10.
Zhang Cheng believes that sperm development is an exquisitely perfect regulatory process, but also a fragile process of change, in which any one of the links may suffer from toxin infringement and lead to spermatogenic disorders. Cigarette smoke contains more than 3600 kinds of toxic chemicals and carcinogenic, teratogenic substances, very easy to interfere with the normal spermatogenic process of the testes, resulting in decreased semen quality, sperm fertility. He warned men of childbearing age to refrain from smoking.
★Smoking is prone to infections with disease-causing bacteria
A medical report said smokers are more than four times more likely than others to be infected with germs such as meningitis, toxemia, pneumonia and ear infections.
500,000 people in the U.S. become ill and more than 40,000 die each year from the germs, which are also a leading cause of death in children.
Not only are smokers exposed to these germs, but non-smokers who passively smoke for just one hour a day are also infected with these germs, and they are two-and-a-half times more likely to be infected than the general population.
Experts say that the more you smoke, the more likely you are to contract these germs, especially those who are alcoholics and people, and that children living in smokers' homes are at greater risk of developing these diseases.
★Smoking Can Seriously Damage Your Health
Tobacco smoke contains at least three dangerous chemicals: tar, nicotine and carbon monoxide, which is a mixture of several substances that condense into a sticky substance in the lungs. Nicotine is an addictive drug that is absorbed by the lungs and acts primarily on the nervous system. Carbon monoxide reduces the ability of red blood cells to carry oxygen throughout the body.
A person who smokes 15 to 20 cigarettes a day is 14 times more likely to die of lung, oral or throat cancer than a nonsmoker; four times more likely to die of esophageal cancer than a nonsmoker; twice as likely to die of bladder cancer; and twice as likely to die of heart disease. Cigarette smoking is a major cause of chronic bronchitis and emphysema, and chronic lung disease itself increases the risk of pneumonia and heart disease, and smoking also increases the risk of high blood pressure.
Mouth and throat
The smoke from cigarettes (especially the tar contained in them) is carcinogenic ---- that is, it produces cancer in the tissues it comes into contact with, so any part of a smoker's respiratory tract (including the mouth and throat) is at risk of developing cancer.
★Heart and Arteries
Nicotine can make the heart beat faster and raise blood pressure. Tobacco smoke, probably due to carbon monoxide, seems to promote the accumulation of atherosclerosis in the arteries, which is one of the causes of many heart diseases, and the chances of a heart attack being fatal for a large number of smokers are much greater than for non-smokers.
★Toxins in cigarette smoke
Cigarettes, cigars and pipe smoke contain many different substances, the most harmful substances are three, they are tar, nicotine and carbon monoxide, which are the cause of many smokers' early deaths.
Smoking women who take birth control pills increase the risk of taking the pill. Pregnant women who smoke 15 to 20 cigarettes a day are twice as likely to have a miscarriage as non-smokers and are more likely to give birth to premature or debilitated babies, and the death rate of babies born to smokers in the postnatal period is about 30 percent higher than that of babies born to non-smokers.
There is also the so-called "clean smoking", or second-hand smoke, which increases the chance of lung cancer in non-smokers. Some brands of cigarettes contain less tar and nicotine than others, but there is no such thing as a completely "safe" cigarette. However, there is no such thing as a completely "safe" cigarette in the world. However, there is no such thing as a "safe" cigarette in the world. Therefore, switching to "light" cigarettes may not always help. Habitual heavy smokers usually develop a habit of inhaling more y and lighting up more often when they switch to light cigarettes.
Esophagus
Most smokers prefer to swallow a certain amount of smoke, so the digestive tract (especially the esophagus and pharynx) is at risk for cancer.
Lungs
The fine hairs that line the airways in the lungs normally remove hydrogen foreign matter from the lung tissue. These hairs continuously sweep particles from the lungs into the phlegm or mucus to expel them. In addition to causing cancer, the chemicals in tobacco smoke gradually destroy some of the hairs and increase mucus secretion, so the lungs become chronically diseased and susceptible to bronchitis. Obviously, the "smoker's cough" is due to the mechanical efficiency of the lungs cleaning is impaired, so the amount of phlegm increased.
Bladder
Bladder cancer can be caused by inhaling cancer-causing chemicals contained in tar, which are absorbed into the bloodstream and then sampled in the urine.
★Passive smoking is more dangerous than a tiger
American medical researchers recently published a study pointing out that passive smoking, or what is commonly known as "secondhand smoke," is even more dangerous than previously known, and that some women who live with smokers*** are six times more likely to develop lung cancer than the general population.
The study, which examined the tissues of 106 women in Missouri who lived with smokers***, found that women who had mutations in or lacked the gene known as "GSTMI" were 2.6 to 6 times more likely to develop lung cancer than the general population," the study said. The "GSTMI" gene is now thought to inactivate carcinogens in tobacco. "Secondhand smoke" is more harmful than imagined. The researchers say the study is currently a small-scale experiment and needs to be further confirmed and expanded. However, if the study is correct, then environmental smoking is far more dangerous than previously known.
Lung cancer is considered by the medical profession to be a disease of civilization because of its seriousness, which is constantly being revealed as society advances. Since the beginning of the 20th century, the incidence of lung cancer has greatly increased, growing faster than other cancers. In the 1920s, there were only about 370 reported cases of lung cancer in the world, but by the 1950s, the number of people suffering from lung cancer in the United States alone was as high as 1.83 million.
Lung Cancer Culprits
In just 20 years, from the early 1950s to the early 1970s, lung cancer increased 122 percent in men and 177 percent in women. Currently, it is estimated that there are 660,000 new cases of lung cancer in the world every year. Lung cancer is also one of the top 10 most common cancers among Singaporeans, especially among men, who rank in the top two or three of all cancers. Regarding the causative factors of lung cancer, as early as in the 1920s, the medical profession has suggested the relationship between smoking and lung cancer, but it was not until the 1950s, when British medical researchers conducted a large-scale survey study on 59,000 British doctors, that it was scientifically and irrefutably confirmed that smoking is the main culprit for lung cancer from an epidemiological point of view.
★The four "killing" means of cigarettes
1. Tobacco oil
It is a pity that it is difficult to give a clear and concise answer to what causes the human body's discomfort after smoking, but it is related to tobacco oil. The oil in cigarettes is made up of thousands of chemicals, including such corrosive and toxic gases as acids, glycols, ethanol and ketones, as well as hydrogen oxide and carbon monoxide.
2. Carbon oxides toxins
Carbon monoxide gas, which makes up about 4 percent of cigarettes, invades red blood cells once it enters the lungs and replaces oxygen. This toxic gas can make the heart and other human tissues lack of essential oxygen, and promote cholesterol precipitation in the blood vessels.
3. Nicotine
Nicotine itself is a toxic substance that initially stimulates the brain and central nervous system, and then has a depressant effect on it.
4. It is reported that 150,000 people die from smoking in the United States every year
If the loss of life is still secondary, then, many components of cigarettes are carcinogenic, it is the most terrible thing. Studies show that 30% of deaths from cancer can be attributed to smoking, especially lung, larynx, mouth and esophagus cancers. In addition, smoking can lead to bladder, pancreatic and kidney cancers.
Of the various types of cancer, the deadliest are lung and pancreatic cancers. According to the American Cancer Society report, smoking kills about 150,000 people in the United States every year.
Smoking kills evidence by In 1951, the British Medical Association conducted a questionnaire survey of its smoking-addicted 3.4 million members. During the subsequent ZO years, official records were kept about these members changing their smoking habits and the causes of their deaths. British doctors believe that the risk of death from heart disease is as much as 15 times higher for smoking addicts under the age of 45 than for non-smokers. For lung cancer, respiratory disease and stroke, the risk of death for smokers is at least three times higher than for non-smokers. Many other cancers and diseases are also related to smoking to a greater or lesser extent.
All in all, it is easy to see that this extensive and detailed study, with its documented number of patients and time span, makes a strong case against smoking.
★Smoking causes sudden death
The so-called sudden death, that is, a violent death, an acute death. It refers to the sudden, unexpected, non-human factors caused by cardiac arrest and death, the patient from the onset of death is often no more than one hour. About 400,000 people in the United States die each year from sudden cardiac death, 70 percent of them from heart disease.
Scholar Framingham after 12 years of research found that smokers by coronary heart disease together with sudden death than non-smokers more than four times higher than the incidence of sudden death and the number of cigarettes smoked per day into a ratio. Follow-up studies found that the negative law rate of sudden death in the smoking cessation group was 19%, while the continuing smoking group was 27%, a significant difference. Smoking cessation led to a decrease in the recurrence rate of sudden death.
Experts pointed out that smoking so easy to cause sudden death is due to the smoke in the nicotine, carbon monoxide and other harmful substances easily induced coronary artery spasm, so that the myocardial ischemia ischemia and hypoxia, resulting in the myocardial electrical life activity is not stable. At the same time, nicotine and carbon monoxide can make myocardial ventricular fibrillation valve is reduced and more likely to cause ventricular fibrillation. In addition, it can also promote the platelet coagulation function hyperfunction and easy to form intra-arterial thrombus. All these factors contribute to the occurrence of sudden death. Therefore, it can be considered that smoking is an important risk factor for sudden cardiac death, and smoking cessation is one of the important measures to prevent sudden death.
★The killing power of nicotine
The nicotine in 1 cigarette can poison a mouse
The nicotine in 25 cigarettes can poison a cow
The nicotine in 40-60 mg can poison a person
China's smoking-induced illnesses kill about 1 million people every year, ranking first in the world
The lung cancer in China is a major cause of death. p>
China's lung cancer mortality rate is the world's first growth, and at a rate of 4.5% per year
Coronary heart disease incidence in smokers is four times that of non-smokers
53.6% of non-smokers by the hazards of passive smoking
A pack of cigarettes a day, a year cost about 800 yuan, ten years cost nearly 10,000 yuan
★The three major hazards of smoking
Tobacco combustion bubbles serious contains more than 20 kinds of toxins, the most harmful to life to be counted as nicotine. On this point alone, smoking has three major hazards:
1, can be directly poisoned life
Some people through animal experiments have obtained the following amazing results: in the big horse can not withstand the injection of 8 ground nicotine, it will soon die; lively dog, not a drop of nicotine injected into a vein can be placed in the death of it; in addition, so that after long-term smoking of certain animals can be found to have vasoconstriction and even sclerosis of the obvious. found to have a marked tendency to vasoconstriction and even hardening of the blood vessels.
2, can destroy the body's nutrients
Smoking can prevent the body's absorption of vitamin C, nicotine on vitamin C has a direct destructive effect. The human body if long-term lack of vitamin C, there is the possibility of scurvy.
3, can induce a variety of diseases
Because of the inhalation of smoke on the respiratory tract, the digestive tract and other organs have a malignant stimulating effect, and therefore some people believe that it is the stomach and duodenal ulcers, respiratory infections and even for the mouth, lips, tongue, esophagus, respiratory fee and other cancer triggering factors.
So it seems, smoking is harmful to human health. So try to quit or less smoking, non-smokers are best not to get addicted to this hobby.