New research published in the Lancet shows that gaining weight can dramatically increase the risk of several different cancers. Weight gain in men increased their risk of cancers of the colon, kidney, thyroid and oesophageal adenocarcinoma. Their chances of developing rectal cancer and malignant melanoma also rose. Weight gain in women increased the risk of endometrial, gallbladder, oesophageal adenocarcinoma and kidney cancer. The risk of women getting post-menopausal breast, pancreatic, thyroid, and colon cancers also rose. The risk of leukaemia, non-Hodgkin’s lymphoma and multiple myeloma rose in both sexes.
Renehan AG, Tyson M, Egger M, Heller RF, Zwahlen M. 2008. Body-mass index and incidence of cancer: a systematic review and meta-analysis of prospective observational studies. Lancet. 371 (9612) 569-578.