Prolonged Sitting Increases Cancer Mortality Risk, Study Finds

A large observational study of more than 90,000 adults tracked with wearable accelerometers found that each additional hour of uninterrupted sitting per day raises the risk of death from cancer by roughly 9‑10 %. Continuous sedentary periods of at least 30 minutes were especially harmful, while brief bouts of light activity such as walking reduced the risk. Researchers emphasized the association, not a proven causal link, and recommended frequent active breaks during work and daily routines.

Separate research by Hungarian scientists examined how regular physical fitness relates to molecular markers of aging. In a cohort of 290 adults averaging 60 years, better cardiorespiratory fitness, grip strength and mobility were linked to favorable DNA‑methylation patterns and lower epigenetic risk scores for diseases such as type‑2 diabetes, COPD, stroke and lung cancer. The findings suggest that maintaining physical condition may slow biological aging and lower disease risk at the molecular level.