Can I get lung cancer after 20 years of smoking? What are the symptoms of lung cancer?

The chance of developing lung cancer after 20 years of smoking is still quite large, and a big factor causing lung cancer is smoking. The early symptoms of lung cancer are cough, followed by chest tightness and blood in the sputum or hemoptysis.

Whether you will develop lung cancer depends on a variety of factors, such as how is your physical condition? How much do you smoke? The main symptom of lung cancer is cough, which can be very severe in the advanced stage, and there is a state of coughing up blood.

The first symptom is that it is very difficult to breathe in the lungs, coughing frequently, and sometimes nausea and retching, and the second symptom is that you will feel vomiting after eating, and you will feel weak.

It is possible to develop lung cancer with the following symptoms such as long-term and chronic cough; Repeated coughing up of sputum, and the sputum is bloodshot and even bright red, this is a situation that should definitely be vigilant.

Everyone knows that smoking is bad for your health, but for non-smokers, secondhand smoke is the most harmful.

50% of lung cancers in China are related to smoking, which is a very large number, according to studies have shown that secondhand smoke is a clear carcinogen, and China is the country with the most serious problem of secondhand smoke. <>

The main hazards of secondhand smoke are:

1. Carcinogenic

In addition, people who regularly smoke secondhand smoke are also more likely to develop cancer than people who smoke firsthand smoke.

Secondhand smoke contains a variety of chemicals, as well as 69 carcinogens, and is really scary.

Second, it affects the brain

One of the most common effects of secondhand smoke is memory loss. This is because secondhand smoke affects the blood vessels in the brain, worsening brain damage and reducing memory.

It can be said that second-hand smoke is only bad and not beneficial, so if you want to avoid secondhand smoke, you must solve the problem at the root. <>

3. The harm of secondhand smoke to pregnant women

In the eyes of many people, as long as pregnant women do not go to places where there are more smokers, or if there are smokers in the family, let them smoke in another place, it will not affect pregnant women.

However, the smoke spreads quickly, and the smoke will directly harm the environment in which the fetus grows, such as causing uterine environmental pollution. Nowadays, people must let them write outside, or just quit smoking.

If a pregnant woman inhales too much second-hand smoke during pregnancy, the baby is likely to be weak and sick, and it will seriously affect the baby's intelligence. <>

Fourth, the harm of second-hand smoke to children should not be underestimated

Children inhale the most second-hand smoke every day, and because children have weak resistance, second-hand smoke is far more harmful to children than adults.

Children's resistance is relatively weak, so long-term exposure to secondhand smoke can easily lead to various diseases in the body, the most common being asthma. In addition, secondhand smoke can also cause children's memory to weaken, and one thing parents tell will be forgotten in the blink of an eye. In fact, if you pay attention to the lectures in class, it is easy to forget what the teacher says.

Many times, parents think that it is a child's intellectual problem, but in fact, it has a lot to do with inhaling secondhand smoke.

Children who regularly smoke secondhand smoke will not like to eat, which may be due to picky eating and anorexia in the eyes of parents. I believe that many children will be punished by their parents for not liking to eat, and parents will only find reasons in their children, but in fact, this has a lot to do with parents.

For the health of yourself and your family, you must stay away from second-hand smoke, and it is best for people who smoke at home to quit smoking, so as to create a better family environment.

Second-hand smoke is very harmful, and even no less harmful than first-hand smoke, so smokers must pay attention, pay attention to the health of their families, and stay away from them.

Very big. Scientists have confirmed that secondhand smoke is more harmful than smoking in person, and people can inhale harmful substances unknowingly, and in the long run, they may get cancer.

It's big, and it's bigger than smoking a cigarette, and if we smoke secondhand smoke for a long time, we're likely to get lung cancer, which is a very difficult disease.

Secondhand smoke is very harmful, and if you smell second-hand smoke regularly, your lungs will turn black, and in severe cases, it will cause lung cancer.

Second-hand smoke is very harmful, and some people have major problems after inhaling second-hand smoke.

First of all, smoking, or any other carcinogenic factor, increases the risk of cancer, but it is not a carcinogenic factor that necessarily causes cancer. For example, smokers have an increased risk of developing lung cancer compared to non-smokers, but that doesn't mean smokers are guaranteed to get lung cancer, or non-smokers are not allowed to get lung cancer.

Usually we use the concept of annual cigarettes to measure the degree of smoking, annual cigarettes The duration of smoking (how many years) x the average number of cigarettes smoked per day. For example, if you smoke for 20 years, the average daily smoking is 20 20 400 years. A 400-year cigarette is a limit, and if a smoker's smoking index exceeds 400-year-old cigarettes, the risk of death from lung cancer increases 20-fold.

It's not that how much you smoke will cause lung cancer, everyone's physique is different, and lifestyle habits are also different. Lung cancer is not necessarily caused by smoking, there are many other aspects as well. It's just that smoking has a greater chance of causing lung cancer than people who don't smoke.

According to your usual habits, it has a lot to do with it. Such as diet, work and rest, etc. It's all related.

Chengdu Western Cancer Institute.

This is not based on the quantity, there is a history of smoking, and there are at least 10 years of smokers.

The longer you suck, the more likely you are to get lung cancer, and if you know how long you can get lung cancer, it is estimated that there will not be so many people who will get lung cancer. It's better to smoke less. Smoking is just one factor that causes lung cancer, and there are many other causes.

Sudden quitting in old smokers does not lead to lung cancer.

Even if an old smoker suddenly quits smoking and then tests for lung cancer, it is not related to quitting smoking, but to long-term smoking.

Causes of lung cancer:

Reason 1: Occupational factors: radioactive substances such as uranium, radium and their derivatives can induce the appearance of lung cancer, mainly squamous cell carcinoma and undifferentiated small cell carcinoma, and the working population who is exposed to these radioactive substances for a long time has a significantly higher probability of disease than the general population.

Reason 2: Smoking: Paper cigarettes contain carcinogens in the smoke when burned. Long-term smoking can lead to proliferation of bronchial mucosal epithelial cells, inducing squamous epithelial carcinoma or undifferentiated small cell carcinoma, which is a recognized predisposing factor.

Reason 4: Chronic lung diseases: such as tuberculosis, pneumoconiosis, silicosis, etc. can coexist with lung cancer, and the incidence of cancer in these cases is higher than that of normal people, in addition to chronic inflammation of the pulmonary bronchi and pulmonary fiber scar lesions can also develop into lung cancer.

Reason 5: Eat fried food often: Some people like to eat fried food, especially roadside stalls. These vendors often use low-quality oil and are repeatedly heated at high temperatures, which produces particularly toxic fumes.

Reason 6, gasoline: Surveys show that lung cancer is also related to driving, and the number of lung cancers caused by long-term exposure to gasoline also accounts for a large proportion of men and women who drive for a long time. It can be seen that the possibility of lung cancer caused by exposure to gasoline should not be underestimated.

Reason 7: Human internal factors: such as familial heredity and immune function reduction, metabolic activities, endocrine dysfunction, etc.

Recently, such an incident happened in the author's unit. Xiao Wang is 25 years old this year and has been a smoker for five years, but he was diagnosed with lung cancer during a physical examination this year and had to be hospitalized**. The author was surprised by Xiao Wang's illness.

Xiao Wang, who usually looks healthy, how could he suddenly fall ill? And the author's neighbor has an old man, who is nearly seventy years old and has smoked for nearly fifty years, and his body is still tough and there is no problem. Why is this happening?

First, let's look at why people get sick. The main reason for people to get sick is the difference in physical fitness, those with strong resistance have a small chance of getting sick, and those with weak resistance have a greater chance of getting sick. On the other hand, this explains why some people smoke for 40 or 50 years and are still healthy, while others get lung cancer after only a few years of smoking.

From a genetic point of view, although we humans have the same genes, they are so different that we have a thousand differences. If the genes inherited from your family have a child, at a certain point in your life's growth, the disease will come to your door.

In addition, different working and living environments also determine the physical health of different smokers, and poor working environment coupled with smoking will be more harmful to the body. And smoking is not only harmful to your own health, secondhand smoke can also endanger the health of others around you.

Therefore, it is still imperative to quit smoking, and it cannot be considered a universal principle because of the existence of some special cases, let alone because a person has smoked for 50 years and is fine, it is not possible to think that smoking is not harmful to the body, and it is still a correct and healthy lifestyle to quit smoking as soon as possible.

There is a certain relationship between whether you have cancer and smoking, but whether you have cancer or not is also related to many other factors, such as genes, such as diet, environment, psychology and other factors.

Personally, I think that due to the living environment and personal physique, smoking does not directly cause lung cancer, but only increases the chance of lung cancer.

This is related to everyone's physique, the body's resistance is insufficient, and it is easy to get any disease, and it is not that smoking will definitely get lung cancer, but it only increases the chance of getting lung cancer.

This is related to everyone's physical fitness, followed by the harm of secondhand smoke. It may be that some people's physique is weak, and with the harm of smoking and second-hand smoke, they are naturally prone to illness.

This matter is still different from person to person. Some people may have more cancer cells in their bodies, and with irregular work and rest, they are prone to lung cancer.

This mainly depends on one's physical fitness, the health of one's body organs, and one's age.

This is due to differences in human bodies, such as genes and organs, and the results of smoking are not the same.

Individual differences, each person's living environment, exercise situation, and genes are different, so the results are different.

It depends on the extent of your cigarette damage.

Because smoking is so damaging to health, people who smoke live much less than non-smokers. In the United States, 1 million people in 25 states are counted, and those who smoke 1-9 cigarettes a day have an average life expectancy; Those who smoke 10-19 cigarettes a day will have their life expectancy reduced; Those who smoke 20-39 cigarettes a day will have their life expectancy reduced; Smoking more than 40 cigarettes a day will reduce the number of years of life.

However, some people can't get lung cancer if they smoke all their lives, and some people don't smoke but get lung cancer. In fact, while blaming the people who are getting worse about air pollution and those who let themselves get used smoke, you also have to blame your own genes, which are not good for you, and the damage caused by your cigarettes is staggering.

The rs8034191 locus is located near the chRNA5 gene, which encodes a nicotine cell receptor that influences the addictive behavior of smoking and thus increases the harm of smoking. Studies have shown that nicotine can promote the proliferation, survival, migration, and invasion of cancer cells to neighboring tissues through these receptors, thereby indirectly promoting the occurrence of lung cancer.

CYP2A6 is the main metabolic enzyme of nicotine, and its activity changes are closely related to smoking behavior, and play an important role in the activation of nicotine oxidation and other tobacco carcinogens. Studies have shown that individuals with the CYP2A6 deletion allele have a reduced risk of developing lung cancer.

The GSTP1 gene encodes glutathione sulfhydryltransferase, which is primarily used to remove endogenous or exogenous carcinogens and avoid genome damage. Mutations in the GSTP1 gene encode the resulting glutathione mercaptotransferase with reduced activity, resulting in a reduced ability to remove endogenous or exogenous carcinogens, increasing the risk of asthma.