From The Guardian.
People who take daily supplements of vitamin E have a higher risk of developing lung cancer, according to one of the largest studies into vitamins and health ever attempted.
Doctors monitored the wellbeing of more than 77,000 men and women over a four-year period and found that a range of vitamins failed to protect against lung cancer, while vitamin E slightly increased the risk of developing the disease.
The study suggested that taking 400mg of vitamin E for 10 years increases the risk of lung cancer by 28%. Taking 100mg of the vitamin each day raised the risk of disease by 7%. . . .
Unsurprisingly, the doctors found that lung cancer was strongly correlated with smoking, a family history of the disease and increasing age, but were surprised to find a slight but significant rise in lung cancer linked to vitamin E. The effect was most prominent in current smokers.
People who took multivitamins, vitamin C or folate supplements had a risk of lung cancer similar to those who did not take supplements, according to the study, which appears in the American Journal of Respiratory and Critical Care Medicine. . . .