Too Much Vitamin E Increases Lung Cancer Risk

Dr Christopher Slatore of the University of Washington in Seattle, who led the study, said: "In contrast to the often assumed benefits or at least lack of harm, supplemental vitamin E was associated with a small increased risk of lung cancer."

"Future studies may focus on other components of fruits and vegetables that may explain the decreased risk of cancer that has been associated with fruit and vegetables. Meanwhile, our results should prompt clinicians to counsel patients that these supplements are unlikely to reduce the risk of lung cancer and may be detrimental."

Study examined 77126 people aged from 50 to 76. All of them were taking 400 milligrams of Vitamin E daily. The study lasted 4 years. By the end of the study 521 developed lung cancer, this means that high doses of Vitamin E increases cancer risk by 28%.

Research has also studied link between Vitamin C, folic acid and lung cancer. None of these supplements affected cancer risk. Other factors affecting cancer risk are found to be family history, age and smoking. Smoking is considered as most dangerous factor causing different types of cancer, particularly lung one.

Vitamin E is known as antioxidant protecting cells from damage. However, the study showed it may also behave as pro-oxidant that damages cells. This is why researchers suggest to rely on natural vitamins and minerals contained in fruit and vegetables, rather than artificial supplements. Scientists also advise to adopt healthy living habits, such as exercising, healthy food, and the most important smoking cessation.