Low Testosterone and Prolonged Sitting Linked to Higher Cancer Risk

An international analysis of more than 26,000 men from studies in Australia, the United States and Europe found that very low blood testosterone levels were associated with a higher chance of being diagnosed with cancer and with increased cancer‑related mortality. The risk rose when testosterone fell below 7.3 nmol/L for diagnosis and below 8.6 nmol/L for death, although prostate cancer showed no link to natural testosterone levels.

A separate long‑term observational study tracking over 90,000 adults for about 12 years reported that remaining seated or lying down continuously for more than 30 minutes markedly raised the risk of dying from cancer. Each additional hour of uninterrupted sitting added roughly 10 % to that risk, while short bouts of light activity – such as walking around the office, washing dishes or light housework – reduced it by about 12 %. Even five minutes of moderate activity in place of five minutes of sitting was linked to a 22 % risk reduction. Dr Frederick Ho of the University of Glasgow noted that “simple breaks from prolonged sitting can be protective”.