New research published by The BMJ on Tuesday has found strong evidence to support a link between obesity and major cancers. ADVERTISEMENTThe new review found 12 associations which were supported by strong evidence, strongly statistically significant results and no suggestion of bias. Although previous studies already provide evidence for a link between obesity and some cancers, the team behind the new research point out that some may be flawed or biased due to weak study design and conduct. The team also found additional associations supported by strong evidence between weight gain and the risk of colorectal cancer risk; and between body mass index and risk of gallbladder, gastric cardia, and ovarian cancer, and mortality from multiple myeloma. The studies examined found strong associations between BMI and a risk of esophageal adenocarcinoma, colon and rectal cancer (in men), rectal (in men), biliary tract system, pancreatic, and kidney cancer, and endometrial (in premenopausal women).
New cases are striking adults in the…The evidence review also linked obesity with a higher risk of gall bladder, stomach and ovarian cancers. The new evidence review was led by Maria Kyrgiou, of Imperial College London's Department of Surgery and Cancer. He pointed to other studies that have shown that quitting smoking reduces cancer risk no matter how long someone's been smoking. They found that for every increase of 5 in BMI, the risk of developing certain cancers rises. Overweight and obesity also can alter levels of sex hormones, which could explain the increased risk of breast and endometrial cancer in women, Colditz added.
collected by :Lucy William
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