Does nicotine kill cancer cells?

Nicotine is not only not carcinogenic, but also a cancer bane.

Recently, Ai saw a "popular science article" on the Internet, which said a lot of views contrary to medical research, treating nicotine as a "miracle drug" to fight cancer, that smoking can fight cancer. And also justified, let's see if there is any reason.

Argument one: the tobacco industry titan mouth containing grass old Mr. 112 years old.

Argument two: Professor Ai Yan Ye, vice president of Northeastern University, found that the tobacco combustion process of an unsaturated state of nicotine, has important biological activity, anti-cancer live, anti-viral activity, and anti-bacterial ......

Mention of cigarettes, many people's first reaction is to cause cancer, and is harmful to health, and can accurately say that the harmful substance - nicotine, so touted nicotine anti-cancer health benefits of the argument by many smokers.

Don't say, nicotine is not carcinogenic, the WHO has never included nicotine in the list of carcinogenic, but if nicotine may be anti-cancer, smoking can prevent cancer, it is very wrong.

A. Can nicotine fight cancer?

This "popular science article" is a ghost story "fishing article", let's crack them one by one.

First, the article mentions a 110-year-old tobacco industry leader "mouth containing grass" an old man, not to mention the name is surprising, but after investigation, there is no such person.

Second, the article mentions the vice president of Northeastern University, Professor Ai Yan Ye found, after investigation, on the official website of Northeastern University, there is no information about tobacco research press conference, the university also does not have a professor named Ai Yan Ye.

Not only that but there have been studies that clearly show that nicotine can promote cancer cell metastasis. A study published in the American Journal of Experimental Medicine reported that researchers from Wake Forest University School of Medicine, through a final survey of 281 lung cancer patients, found that 40% of lung cancer cases can develop brain metastases, and a higher percentage of smokers develop metastases.

Subsequently, the researchers found through mouse model experiments that nicotine in cigarettes can cross the blood-brain barrier and change the glial cells in the brain so that immune cells switch from cancer-inhibiting to cancer-promoting growth, thus enhancing the ability of tumor brain metastasis.

Nicotine is not carcinogenic but is very harmful

Although nicotine is not a carcinogenic substance, the harm to various organs of the human body should not be underestimated.

1、Addiction

Nicotine can release dopamine, and cigarettes also contain certain substances to ensure that dopamine is not easy to break down, so smokers inhale dopamine in the brain around the total to maintain a high level so smokers are very addicted. Once nicotine dependence is formed, a vicious cycle will be formed, so smokers weakened physical strength, memory loss, low work efficiency, etc.

2. Damage to the lining of blood vessels

Nicotine can damage the lining of blood vessels, allowing lipids and inflammatory cells to enter and accumulate in the blood vessels, thus accumulating in the walls of blood vessels and forming blood clots. Nicotine also stimulates vasoconstriction, which aggravates blood clots.

3, damage to the heart

Nicotine will release catecholamines that can stimulate neurons and adrenaline, this substance is closely related to cardiovascular disease, and can cause increased heart rate, and myocardial contraction formaldehyde, the substance content exceeding the limit can even cause hypertension and myocardial infarction.

4, affect the absorption of drugs

Nicotine will also affect the absorption of drugs, such as common blockers of cardiovascular disease, the effect of blockers will be weakened under the inhibition of nicotine so that the effectiveness of the drug is reduced.

Third, why do some people smoke long life, someone quit smoking after a disease?

It is often said that smoking is not good for health, but there are also long-lived elderly people with cigarettes all year round, cigarettes are harmful to health, is it time to change the argument?

There is nothing strange in the world, the existence of smoking longevity is not surprising. This phenomenon, however, is only a chance event. Just like someone running a red light may have an accident, someone who runs a red light every day is safe and sound, but can not say that crossing the road is very safe.

Smoking healthy people, that is born genetically strong results, and not by exercise can change their physique.

Research led by UCLA found that long-lived smokers have a stronger ability to repair cellular damage in their bodies, and it's not uncommon to find people with strong genes.

Some people raise the bar: I also smoke every day, and all the body tests are normal, which is alarmist.

The harm of smoking is lagging, most smokers smoke for 10, 20, or more years before they develop related diseases, and often do not realize the harm until the disease occurs.

However, the benefits of quitting smoking are immediate, and the sooner you quit, the more benefits you get.

A team of researchers from the World Health Organization's International Agency for Research on Cancer, led by Dr. Paul Brennan, published an important study in the Annals of Internal Medicine that found that quitting smoking improves survival in lung cancer patients.

The researchers prospectively followed 517 current smokers with early-stage NSCLC for an average of seven years, and by comparing patients in the smoking cessation group to those in the continued smoking group, found that the former had a 21.6-month increase in median overall survival and tumor progression-free survival and that smokers who quit with a confirmed lung cancer diagnosis lived nearly two years longer than those who continued to smoke.

The benefits of quitting smoking are not only for oncology patients but for the general population, quitting earlier is also more beneficial in reducing the risk of tumor development. Don't believe the nonsense that nicotine fights cancer and that smoking prevents cancer and leads to longevity.