Men who take high doses of Vitamin B6&B12,long term have an increased risk of lung cancer, the risk being particularly high for smokers. _according to a study published in the journal of clinical oncology.
Use of vitamin B6& B12 from individual supplement sources, but not from multi-vitamins was associated with a 30-40% increased lung cancer in men.
Male smokers who consumed the vitamins at similar doses were 3-4 times more likely to develop the cancer. The risk remained even after accounting for factors such as smoking, age, race ,body size, alcohol consumption,personal history of cancer and use of anti-inflammatory drugs.
However, use of vitamin B was not associated with lung cancer risk in women.
_Health-