Vitamin C, obtained from food sources but not from vitamin supplements, is associated with a reduced risk of oral malignancies in men, a study shows.

The team of Dr. Nancy Naiari Massegian from the Research Institute in New England, Massachusetts, studied the relationship between the intake of vitamins C, E, A, carotenoids and cases of precancerous lesions of the oral cavity. 42,340 men were included. Participants provided information on the use of artificial vitamins and their diet every 2 years.

A total of 207 cases of precancerous conditions in the oral cavity were diagnosed between 1986 and 2002.

The risk of developing such lesions is not related to the total intake of vitamin C, A or carotenoids.

However, dietary intake of vitamin C is associated with a reduced risk of precancerous lesions - individuals with the highest intake had a 50% lower risk than individuals with the lowest intake.

Researchers have not found a clear link between precancerous lesions and beta-carotene.

The risk of precancerous lesions increases with increased intake of vitamin E, obtained artificially, especially among smokers.

The results show that high doses of vit. Well in smokers have a negative effect on health.