On the other hand , according to one study , supplementation in the absence of a deficiency didn 't enhance or suppress t cell immunity in a group of healthy seniors .
The patients are more likely to be african-american and dark-skinned , and more likely to have been exclusively breast-fed for an extended period of time , without vitamin supplementation .
According to stein , the participants had ms for an average six years , adding that it may be possible that earlier high dose supplementation may lead to different results .
Underpinning these recommendations is the notion that hormone supplementation can return us to our " natural " state of youthful vibrancy , as if aging itself were against nature .