Could B Vitamin Megadoses Increase Actually Lung Cancer Risk For Male Smokers?

High vitamin B intake increases lung cancer risk among men

Researchers from Ohio State University and the National Taiwan University studied more than 77,000 people aged between 50 and 76 in the USA and found that men who took high dosages of vitamins B6 and B12 faced 30 percent to 40 percent increased risk of lung cancer.

Important note: Because this was an observational study, it can't prove for sure that these vitamin B supplements actually caused lung cancer. During this study, certain participants regularly used various B vitamin supplements.

The risks of developing lung cancer were even higher for men who take the supplements and also smoke, according to the study, which was published this month in the Journal of Clinical Oncology. Male smokers taking B6 at this dose were three times more likely to develop lung cancer.

Scientists are Ohio State University found men who took high doses of vitamin b-6 or b-12 for a decade has a significantly higher risk of developing lung cancer than non-users. What was less surprising was that increased risks of lung cancer were found in current cigarette smokers.

High doses of vitamin B6 and B12 supplements may increase the chances of lung cancer in males, especially for smokers, a new study says.

The team sought to account for as many factors as possible that could skew the results, including smoking history, age, race, education, body size, alcohol consumption, personal history of cancer or chronic lung disease, family history of lung cancer and use of anti-inflammatory drugs.

Researchers at the James Cancer Hospital and Solove Research Institute said it is easy to get plenty of B vitamins from diet - foods like cereals are fortified with them, and some energy drinks have 8,000 percent of the recommended daily allowance of B12. And taking B vitamins wasn't linked to lung cancer in women at all, either.

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"That's marketing. That's not science", said Theodore Brasky, one of the study's authors, as reported by CNN.

There were too few cases of lung cancer among nonsmokers to include them in the full analysis.

Arthur G. James Cancer Hospital and Richard J. Solove Research Institute (OSUCCC - James), Fred Hutchinson Cancer Research Center and National Taiwan University report their findings in the August 22, 2017 issue of the Journal of Clinical Oncology.

He went on to explain that the "use of combustible tobacco is a far more important factor in lung cancer development in both men and women".

Many feel that the world of dietary supplementation needs regulating. The study is unique as it was designed specifically to examine associations of dietary supplements with cancer occurrence.

Although now, there is evidence of just how much harm long-term mega-supplementation with B6 and B12 can do for male smokers. The researchers report no relevant financial disclosures.

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