Cancer is not only caused by unlucky environmental factors, but also has a lot to do with it

　　A new study shows that cancer is not caused by "bad luck" but is mainly related to environmental factors.

　　According to a report on the BBC website on December 18, earlier this year, researchers said that two-thirds of cancers are caused by bad luck rather than smoking. This conclusion sparked debate.

　　According to the report, a new study published in the journal "Nature" said that only 10-30% of cancers are caused by the "luck" of the body's natural reaction.

　　Internal or external?

　　Experts said the analysis was "very convincing."

　　Cancer is usually caused by some stem cells in the body dividing indefinitely and eventually losing control.

　　This result may be due to internal factors in the body, such as mutations during cell division, or external factors, such as smoking, ultraviolet radiation, and many other unknown factors.

　　The key is whether internal or external factors are more important.

　　In January, an article published in the journal Science sought to explain why some tissues are more fragile and millions of times more likely to develop cancer than others.

　　This explanation mainly depends on the hypothesis that when cells divide, they will get out of control, leading to the so-called cancer caused by "bad luck".

　　In the latest research, a group of doctors from a cancer center in New York, USA, tried to uncover this mystery from different angles. They use computer models, population data, and genes to study cancer.

　　They said the findings showed that 70-90% of cancer risk comes from external factors.

　　Cancer only accounts for a small percentage due to bad luck. In other words, those who develop cancer due to long-term smoking cannot say that it is just "bad luck."

　　“cancer ”

　　Researchers say that it can be compared to life using a revolver, and the internal factors are like a wheel.

　　Just like playing Russia, internal factors may give you a one in six chance of developing cancer. This is what is known as "bad luck" caused by internal factors.

　　But if you smoke, you add two or three extra rounds to the revolver. If you dunk at this time, your chances of being "hit" by cancer are greater.

　　Of course, not every smoker will get cancer, and there is certainly a matter of luck here. But there is no doubt that their chances of developing cancer will be greatly increased.

　　Therefore, from a public health perspective, the more we can take away from this revolver, the better.

　　At the same time, there are also some unknown external risk factors, and these external factors are not completely avoidable.

　　A British statistician said the evidence from this study is more credible and shows that external factors are the main cause of cancer, including the most common cancers.

　　According to the report, Dr. Smith, a British cancer expert, said that although healthy lifestyle habits such as not smoking, maintaining a healthy weight, eating healthily, and drinking less alcohol cannot guarantee that you will not develop cancer, it can indeed greatly reduce the chance of cancer.