Everyone wants to know, how do you reduce your risk of cancer? Researchers at the American Cancer Center published a research paper in JAMA: Internal Medicine this week that analyzed data from 1.44 million people in the U.S. and Europe, and found that people who exercised for long periods of time had significantly lower rates of at least 13 types of cancer! While there have been a number of previous articles examining exercise and cancer rates, this one is by far the largest and most comprehensive study and is worth reading. Here are 8 details everyone should know. 1, what exercise can prevent cancer? The paper studied “leisure time exercise”, including walking, running, swimming, fitness and so on, which is what we call “exercise”. Exercise related to the nature of work, such as heavy laborers, professional athletes, etc., is not included in the exercise. The conclusion of this article shows that to prevent cancer, the total amount of exercise is very important, what kind of exercise is not so important, and does not require strenuous exercise. Running, playing ball, tai chi, square dance, no matter which one, like it. 2.Where is the bull in this article? In a word, there are many people, long time. It integrates a lot of previous research data, research in Europe and the United States 1.44 million people self-reported daily exercise, and then compared the exercise of the largest 10%, and the exercise of the smallest 10% of the two populations. The entire exercise study statistics spanned 18 years, from 1987 to 2004, while the cancer incidence data was tracked for an even longer period of time. Health big data, really can bring a lot of previously unseen results. 3, exercise can reduce the risk of which cancers? This paper studied 26 types of cancer and found that exercise significantly reduces the incidence of 13 of them, as shown in the following chart: 8 of the top 10 cancers in China can reduce their risk through exercise. Please look at the chart again: esophageal adenocarcinoma reduced by 42%! Liver cancer 27%! Lung cancer 26%! 4, exercise to prevent cancer because you can lose weight? Obesity is a known cancer-causing factor, so many people used to speculate that the main principle of exercise to prevent cancer is weight loss. This article found that it is not so simple. First of all, exercise to prevent cancer, the overall effect on obese (BMI>25) and non-obese (BMI<25) people are similar. Thus, exercise significantly reduces the incidence of many cancers even in people who are not obese. Second, after taking the weight factor into account and recalculating, it was found that exercise still had a significant preventive effect on 10 types of cancer, indicating that the mechanism for preventing them is not only weight loss, but also adjustments to other aspects of the body. Therefore, regardless of fat or thin, exercise to prevent cancer is reliable, do not find excuses. 5, smoking people exercise effective? Effective, and very effective! This article found that, whether or not smoking, exercise can significantly prevent a variety of cancers. If you smoke, or have ever smoked, exercise reduces the incidence of lung cancer by >30%! Interestingly, for non-smokers, exercise prevented many types of cancer, but had no effect on lung cancer. Could it be that the mechanisms of lung cancer are completely different in smokers and non-smokers? This is a scientific question that deserves to be investigated. In short, if you smoke, or have ever smoked, get moving, even if it means running with a cigarette in your mouth. Jokes aside, there is no doubt in my mind that I want everyone to quit smoking! 6. Are there any other factors that affect the effectiveness of a workout? In order to see if there are other factors that can affect the effect of exercise on cancer prevention, the researchers put the population according to geographic location, gender, race, whether hormone therapy, data tracking time, etc., for a variety of subdivided, and found that none of them have an impact on the results. Therefore, no matter where you are, male or female, yellow or white or black, eat ramen or hot pot, there is no excuse, quickly move. 7, which cancer incidence increases with exercise? Carefully read the article will find that although exercise to reduce the incidence of 13 types of cancer, but there is a cancer instead increased by 27%, that is, melanoma. This is not surprising, melanoma is a kind of malignant skin cancer, the development of the biggest reason is excessive sun exposure, compared to the homeboys and geeks, like to exercise people sun exposure is obviously more opportunities, so the incidence rate is very normal. But I think the vast majority of Chinese people do not need to worry about, first, the Chinese people’s aesthetic standard has always been “white and beautiful”, unlike Europe and the United States white people want to catch the opportunity to sun themselves into the color of the plum dishes buckle meat, second, China has a haze “protection”, there is no opportunity to get strong ultraviolet rays. The opportunity to sunshine to the strong ultraviolet rays. 8.What are the other research questions? Research papers have limitations, and this one is no exception. There are still a lot of unanswered questions. For example, how much exercise is optimal? Is more the better, or is there an optimal value? Do different forms of exercise prevent different cancers? Does playing mahjong count as exercise? And so on and so forth …… Of course there is the ultimate question: how does exercise actually reduce cancer risk? All these need to be further studied by scientists. Finally, the pineapple would like to emphasize that this paper is a correlation study, not a causal argument, rigorously relying on this data alone can not directly prove that exercise can reduce the incidence of cancer, but this article combined with many other experiments and data, I think it is still credible. Let’s end with a little poem: it turns out that sweet potatoes really do protect against cancer, and if you’re one of those kids who has to walk a long way every time you can get a sweet potato, then you’re not the only one who has to walk a long way every time you can get one.