The U.S. National Cancer Institute conducted an 8-year study involving 29,000 Finnish men, including 1,144 lung cancer patients. They continuously measured the levels of vitamin E in the blood and examined the relationship between these levels and health status. Their final conclusion was that there is a certain correlation between the level of vitamin E in the blood and the incidence of lung cancer. Higher levels were associated with a 19-23% reduction in the incidence rate. The preventive effect was most significant for men under 60 who had smoked for less than 40 years and were not heavy smokers.
However, the researchers also pointed out that this preventive effect comes from a balanced diet that includes foods rich in vitamin E, not from taking vitamin E supplements. The best way to avoid cancer is not to smoke.
Foods rich in vitamin E include vegetable oils such as soybean oil and oils extracted from plant seeds, as well as nuts and whole grains. Specifically, nuts such as apricots, almonds, hazelnuts, walnuts, and sunflower seeds, along with whole grains.