If you're currently living with overweight or obesity, international researchers presenting at the International Congress for Obesity say behavioural changes to support your weight loss have been linked to reductions in your risk of developing obesity-related cancers. As excess body fat is causally associated with increased risks of at least 13 cancer types, including most commonly colorectal, post-menopausal breast, endometrial, oesophageal adenocarcinoma and kidney, the researchers looked into data from 22 previous trials, including close to 13,000 participants and 1,157 cancers. While the effect wasn't seen for all cancer types, they did note that trials that mixed diet and exercise were linked with a 15% lower risk of obesity-related cancers. The team say that, with the expansion of pharmacological weight-loss aids, their study highlights the importance of changes in behaviours for weight loss, rather than weight loss alone.