People who smoke for many years usually develop lung cancer when they are old enough to smoke

Tar cigarettes are still harmful Many smokers feel comfortable smoking cigarettes with low tar content, thinking that in this way, the harm can be negligible. A recent study in the United States shows that low-tar cigarettes do not help protect their health, and smokers should not make excuses for smoking. Dr. Michael Turn, director of the American Cancer Society's Institute of Epidemiology, conducted a comparative analysis of the relationship between cigarettes with four tar levels and cancer incidence.

The study, which consisted 364239 men and 576535 women for six years, found that smokers who smoked cigarettes with low tar content were as likely to develop lung cancer as smokers who smoked cigarettes with medium tar content. The survey also found that smoking has a certain relationship with carcinogenesis, and different smoking methods can determine the degree of exposure to carcinogens on the surface of the lungs, thereby promoting the induction of certain types of lung cancer. Studies have shown that as long as you smoke, the harm is the same.

Professor Dai Longrui, from the experimental base of the Shanghai Health Education Promotion Cooperation Center of the World Health Organization, believes that the American experts' view is correct, and low-tar cigarettes only reduce the proportion of nicotine and other harmful substances like cigarettes with filters, but they cannot reduce the harm to the human body. Paper cigarettes contain 3,4 benzopyrene carcinogens, which must be converted by aromatic hydroxylase in the body to have its activity, the amount of the enzyme determines the strength of carcinogenicity, and the amount of this enzyme has a certain relationship with heredity, therefore, people with a family history should quit smoking as soon as possible, because smokers have the possibility of lung cancer within 10 years after quitting smoking. The degree of harm to the body caused by smoking is related to genes Recent studies in the medical community in the United States have found that how much harm smoking can cause to the body may be related to genes, and if pregnant women lack genes to prevent tobacco damage, newborns are underweight, and the situation is the most serious.

According to a report published by Boston University School of Medicine, there are two genes in the human body that are involved in the chemical reactions caused by smoking, one of which can prevent the harm caused by smoking, and the other is to intensify the injury. The study, which surveyed 700 newborns, showed that newborn mothers who had genes that reinforce smoking injuries and lacked genes to prevent harm were the most severely underweight newborns, with an average loss of 1,360 grams and 5 weeks of prematurity. More than 300,000 babies in the United States are born under birth weight each year, that is, weighing less than five pounds and eight ounces (2,500 grams), and low birth weight is the main cause of neonatal death, as well as neonatal inadequacy, which can lead to a variety of infant diseases.

However, doctors oppose genetic screening for pregnant women because underweight newborns are a complex condition and there are too many environmental risk factors and genetic factors that lead to this outcome.

What is the chance of "lung cancer" for people who have smoked for a long time?

Long-term smoking is the bane of lung cancer.

To date, the cause of most human tumors has not been fully understood, but the cause of lung cancer has been recognized by scholars as having a clear relationship with smoking and air pollution. Although it is not necessary to say that smokers will definitely get lung cancer, and non-smokers will not get lung cancer, studies have proven that the higher the amount of cigarettes smoked and the longer the smoking age, the higher the incidence of lung cancer.

A large number of population surveys have proven that smoking is the main cause of lung cancer in 90 male patients and 79 female lung cancer patients. Long-term smokers are 20-40 times more likely to have lung cancer than non-smokers.

Of the thousands of lung cancer patients who have undergone surgery** in the Cancer Hospital of the Chinese Academy of Medical Sciences over the years, 98 are smokers.

Regrettably, 1 in 3 adults worldwide are currently smokers, and the number of female smokers is also increasing. About 60 or more adult males and about 25 percent of medical staff in our country are smokers.

Reduce smoking, quit smoking, and correct bad habits.

Research confirms:1People who smoke more than 15 cigarettes a day have a significantly lower risk of developing lung cancer after halving the amount they smoke, and the mortality rate of lung cancer will continue to decline after quitting smoking.

2.The incidence of lung cancer after quitting smoking for more than 10 years decreases to about the same as that of non-smokers.

3.Continuing to smoke in lung cancer patients increases the difficulty and complications, while stopping smoking may prolong survival and reduce the incidence of lung cancer.

But for long-term heavy smokers, quitting smoking is not an easy task, because smoking is addictive and mainly caused by the nicotine contained in tobacco leaves. While there are drugs and methods on the market that can help you quit smoking, what is more important is the determination and perseverance of the smoker. Because after stopping smoking, the craving will subside naturally, and as long as you survive the temporary torture, you will definitely be able to quit smoking.

It is worth pointing out that due to the large number of smokers in China, inviting and delivering cigarettes is still a common way of socializing; Smoking restrictions in restaurants, offices and public places are not strict, and the protection of non-smokers is insufficient; There are still close-ups of people smoking in film and television works; Parents, teachers, health care workers, and especially doctors smoke cigarettes, all of which have a negative impact. If these social phenomena are not improved, the incidence and mortality rate of lung cancer in China are likely to continue to rise.

Many people who quit smoking have less cough and spitting, more energy, a more relaxed mood, and joy to their families. For those who are financially weak, quitting smoking is tantamount to a significant increase in household income. Elders who do not smoke or quit smoking are good examples for the next generation.

If the smoking rate of our residents decreases year by year, then in a few years, the incidence and mortality of lung cancer will also decrease.

There is no clear rule that smoking will definitely get lung cancer', smoking is only part of the reason, don't imagine those things that didn't happen, (Liu also perseveres to the end) feel the preciousness of life, live well!

Hello, there is no specific time for this, that is, it depends on the person's physique, and some people will not get lung cancer if they smoke for a lifetime.

But there are 3 to 5 years.

It depends on the individual's constitution and the amount of cigarettes smoked. Generally, more than one pack a day is more than ten or twenty years. However, some people smoke all their lives without any problems, and some people do not smoke at all (or they may smoke second-hand smoke) but unfortunately fall ill.

However, smoking is harmless, and it is recommended to quit smoking!

Smoking can cause lung cancer, but this time is uncertain, which has a lot to do with the patient's physical condition.

There is a certain scientific basis for this.

Of course, 40 percent of lung cancer in China is caused by smoking, which I just saw yesterday.

The greater the daily amount of cigarettes, the longer the duration of smoking, the greater the total number of cigarettes smoked, the younger the initial age of smoking, the shorter the quit time, and the deeper the smoking depth, the greater the risk of lung cancer. The cumulative risk of developing lung cancer is 14 to 16 percent for people who have been smokers until the age of 75, and the risk for those who continue to smoke heavily is about 20 25.

Yes, the risk is higher.

Smoking is one of the causes of lung cancer, so long-term smoking may lead to lung cancer. Studies have confirmed that smoking is a high-risk factor for lung cancer, tobacco smoke contains more than 60 kinds of harmful substances, including benzopyrene, nitrosamines are strong carcinogens, long-term inhalation of this harmful carcinogen can lead to lung bronchial epithelial cell DNA damage, epithelial cell dysplasia, promote oncogene and tumor suppressor gene mutations, and eventually lead to the occurrence of lung cancer. If you smoke a lot of cigarettes and smoke for a long time, the chance of inducing lung cancer is many times higher than that of non-smokers.

Therefore, patients are advised to quit smoking first, smoking has all kinds of harm and no benefits, so of course patients are advised to quit smoking.