Authors: Bhaskaran, Krishnan, Dos-Santos-Silva, Isabel, Douglas, Ian J, Leon, David A, Smeeth, Liam
Published: January 1, 2018
Among 1,969,648 never-smokers in the UK CPRD cohort, cardiovascular mortality exhibited a J-shaped association with BMI, with nadir risk at BMI 21-25 kg/m². The overall hazard ratio for all-cause mortality per 5 kg/m² above 25 was 1.21 (95% CI 1.20-1.22), with cardiovascular disease specifically showing this J-shaped pattern. Associations were stronger at younger ages, and the BMI associated with lowest mortality was higher in older individuals. Adjusted Cox regression models accounted for age, smoking, alcohol, diabetes, deprivation index, and calendar period across follow-up from 1998 to 2016.
