Being obese is a known risk factor for developing some cancers. However, which kinds of are associated with obesity is still debated. A recently published study in the BMJ aims to narrow it down. European researchers combed through observational studies that looked for links between being overweight and getting cancer.
Out of 36 kinds of cancer evaluated, the researchers found strong evidence for a link to obesity for 11—in the colon, rectum, biliary tract (liver and gallbladder), pancreas, breast, endometrium (uterine lining), ovary, kidney, and the gastric cardia (the junction of the esophagus and stomach); a certain type of esophageal cancer (adenocarcinoma); and one type of bone marrow cancer (multiple myeloma). The researchers said there may be links between obesity and other cancers, but so far the evidence is relatively weak.
We do know obesity is a cancer risk factor that you can modify, through exercise and diet. Make sure you’re doing at least 150 minutes per week of moderate-intensity activity, such as brisk walking. And if you’re overweight, talk to your doctor or a dietician about whether you need to change your eating habits.
Source: Harvard Medical School