Old smokers should pay attention to four cancer signs

A study reported that among non-smoking men, 20% will develop cancer before the age of 75, while among smoking men, 32% will develop cancer before the age of 75. If smokers also drink excessively, their chances of developing cancer will increase. The survey also showed that smoking is a greater potential threat to women. The harm of smoking is already known to everyone, but the harm of "second-hand smoke" has not yet been taken seriously. Experts say that the probability of cancer caused by inhaling second-hand smoke for 15 minutes a day is no different from that of inhaling first-hand smoke; some Asian women have particularly fragile genes, and the probability of cancer caused by inhaling second-hand smoke is higher.

Old smokers should pay attention to four cancer signals

Old smokers are the most vulnerable group to lung cancer. What signs of lung cancer should they pay attention to?

1. If long-term smokers suddenly experience joint pain and medication is not enough to relieve the pain, it may be related to lung cancer. "Lung cancer cells secrete a substance that causes joint pain."

2. Sudden hoarseness of voice may also be lung cancer.

3. If a person suddenly develops a cough and does not get better after two to three weeks of treatment, you should consider whether there is a problem with the lungs. If there is blood in the cough, you should be highly vigilant.

4. Old smokers will have a coughing habit to some extent, but if the cough suddenly becomes frequent and has some metallic sounds, and the phlegm is difficult to cough up, it may also be a precursor to lung disease.

Cigarette filters are just for show

Smokers are 20 times more likely to develop cancer than ordinary people, but the most important carcinogenic ingredient is not the nicotine that everyone is familiar with, but a component in the smoke called benzopyrene. What's more frightening is that no matter what kind of filter you use, it can only filter nicotine and is completely useless against benzopyrene.

Some experts have applied benzopyrene to the trachea of ​​mice and found that they developed cancer after 20 to 30 times. In addition to benzopyrene, the smoke produced during smoking contains more than 200 carcinogens.

Women who smoke are more likely to develop bladder cancer

Women who smoke are at greater risk of bladder cancer than previously thought, according to new research, which points to changes in the composition of cigarettes as a potential cause of the increased risk.

The latest data show that about 50% of female bladder cancer cases are caused by smoking, while in previous studies, the proportion was 20% to 30%. The researchers said: "The increased relationship between smoking and bladder cancer may be due to changes in the composition of cigarettes and smoking habits over the years." The study report stated: "The composition of cigarettes has changed over the past 50 years." These changes have caused "decreased concentrations of tar and nicotine, while significantly increased concentrations of carcinogens including B-naphthylamine (a known bladder cancer carcinogen)."