Recently, the results of the latest Meta-analysis published online in the British Medical Journal (BMJ) showed that strong evidence supports that obesity increases the incidence of 11 types of cancer, mainly including digestive tract tumors as well as female hormone-related malignancies. 11 types of cancer, closely related to obesity When it comes to obesity causing disease, we are certainly not unfamiliar with it, especially type 2 diabetes and cardiovascular disease, but it is not so clear which cancers obesity actually increases the risk of and how carcinogenic it is. In fact, there have been many studies on obesity and cancer risk in recent years, especially after the surge in the incidence of obesity. Numerous Meta-analyses have supported the association of overweight or obesity with increased cancer risk, but some of the studies may also have exaggerated the effect of obesity on cancer incidence and mortality. The new study, based on 95 existing Meta-analyses and systematic reviews, defined obesity as BMI > 30 kg/㎡, finally confirmed that the association between 11 cancers (esophageal adenocarcinoma, multiple myeloma, gastric cardia, colon, rectum, biliary system, pancreatic cancer, postmenopausal breast cancer, premenopausal endometrial cancer, ovarian cancer, and kidney cancer) and obesity was supported by strong evidence, while the association between other cancer types and The association between other cancers and obesity is still subject to greater uncertainty. The extent of cancer? 1. For every 5 kg increase in weight of adult women, the risk of postmenopausal breast cancer increased by 11% (RR 1.11; 95% CI 1.09-1.13); 2. For every 0.1 increase in waist-to-hip ratio of adult women, the risk of endometrial cancer increased by 21% (RR 1.21; 95% CI 1.13-1.29); 3. 3. For every 5 kg/㎡ increase in BMI, the risk of colorectal cancer increases by 9% in men (RR 1.09; 95% CI 1.06-1.03); and the risk of biliary system tumors can increase by 56% (RR 1.56; 95% CI 1.34-1.81). Situation: China’s obese population ranks first in the world Some people may say, 69% of overweight or obese people are Americans, according to the standard of BMI>30 kg/㎡, there are not many fat people around me, so why worry so much? Then we look at China’s data …… 2015 National Health Planning Commission released the “China’s population nutrition and chronic disease status report” shows that the national average weight of adult men and women aged 18 years and above is 66.2kg and 57.3kg, respectively, the adult overweight rate is 30.1%, the obesity rate is 11.9%, and Whether adults or adolescents, the growth rate of overweight and obesity in China is higher than that in developed countries. In addition, a study published in The Lancet in 2016 covering 186 countries found that over 40 years, the global obese population rose from 105 million to 641 million, with the obesity rate for men rising from 3.2% to 10.8% and for women rising from 6.4% to 14.9%. China’s obese population is the world’s largest, with 43.2 million obese men and 46.4 million obese women, accounting for 16.3 percent and 12.4 percent of the world’s population, respectively. Among the severely obese population, China has risen from 60th and 41st for men and women in 1975 to second only to the United States. As for the question of whether being overweight is a cancer risk, all major studies give the result that as long as you are overweight, you are at risk of cancer! Losing weight is fighting cancer, take action! A study in The Lancet Oncology suggests that 3/4 of cancers caused by overweight or obesity can be avoided by weight loss. How to lose weight? The same old adage: “Keep your mouth shut and your legs open”!