Spirometry and health status worsen with weight gain in obese smokers but improve in normal-weight smokers.
Sood A, Petersen H, Meek P, Tesfaigzi Y. Spirometry and health status worsen with weight gain in obese smokers but improve in normal-weight smokers. Am J Respir Crit Care Med. 2014 Feb 01; 189(3):274-81.