Body size across the life course and prostate cancer in the Health Professionals Follow‐up Study

Current evidence of an association between body size and prostate cancer is conflicting, possibly due to differential effects of body size across the lifespan and the heterogeneity of the disease. We therefore examined childhood and adult body size in relation to total incident prostate cancer and prognostic subtypes in a prospective cohort of 47,491 US men in the Health Professionals Follow‐up Study. We assessed adult height, body mass index (BMI) in early and middle‐to‐late adulthood, adult waist circumference, and body shape at age 10. With follow‐up from 1986 to 2010, we estimated the relative risk (RR) of prostate cancer using Cox proportional hazards models. We identified 6,183 incident cases. Tallness was associated with increased risk of advanced‐stage tumors, particularly fatal disease (RR = 1.66, 95% CI 1.23–2.23, highest vs. lowest quintile, ptrend