Vitamin C and sex differences in respiratory tract infections : [Letter]

Abstract

In their systematic review of sex differences in respiratory tract infections (RTIs), Falagas et al. concluded that males develop RTIs more frequently than females, in particular lower RTIs, and the course of the infection is often more severe in males than in females. ... It is obvious that the findings of the common cold trials with British males and pneumonia trials with males cannot be extrapolated to the general population of the western countries. Nevertheless, further vitamin C trials are warranted among males with low dietary vitamin C intake.