If there wasn’t already enough motivation for overweight men to shed some pounds, new research suggests losing weight could help lower the risk of advanced prostate cancer. Prostate cancer is the second most common cancer in men globally, with approximately 1.3 million new cases in 2018 alone. Fortunately, if discovered early enough, prostate cancer has a relatively low mortality rate, with 96% of patients surviving for 15 years or more following an early stage diagnosis. However, as with any cancer, prevention is better than cure, and survival rates for advanced prostate cancer are very poor. That’s why a new, large-scale analysis of 15 studies involving nearly 831,000 men is significant. It found that having a Body Mass Index (BMI) of above 25 during middle to late adulthood was associated with the highest risk for advanced prostate cancer. Furthermore, the researchers from the Mailman School of Public Health at Columbia University found that having a larger waist size was also associated with an increased risk of advanced prostate cancer and death. “These study results show that risk for advanced prostate cancer can be decreased by maintaining a 'healthy' weight, which is in line with guidelines by the American Cancer Society and World Cancer Research Fund,” said study author Jeanine Genkinger, an associate professor of epidemiology at the Mailman School of Public Health The study was published March 4 in the Annals of Oncology.
Men with waists over 40 inches and women with waists over 35 inches are at greater risk of certain cancers, as well as type 2 diabetes. That’s the message to come out of a study by scientists at the International Agency for Research on Cancer (IARC), which is an arm of the World Health Organisation. According to Dr Heinz Freisling, the lead author of the study published in the British Journal of Cancer, a person’s waist measurement is as good at predicting cancer risk as their body mass index (BMI). His advice is for people to know their waistlines. “You only need to put a tape measure around your belly button. This is easy to do and can give a person an indication of whether their risk for specific cancers is increased or not – for instance pancreas or liver cancer which are known to be related to increased body fatness or obesity,” he said. Being overweight or obese is the single biggest preventable cause of cancer after smoking and is linked to 13 types of cancer, including bowel, breast and pancreas. The study combined data from about 43,000 participants who had been followed for an average of 12 years and more than 1,600 people were diagnosed with an obesity-related cancer.