High dose vitamin B supplements linked to lung cancer

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https://cosmosmagazine.com/biology/high-...in-smokers

EXCERPT: A report published in the Journal of Clinical Oncology shows that male smokers who took high dose vitamin B6 and B12 supplements – often marketed as energy boosters and present in energy drinks – had three to four times the risk of developing lung cancer, compared to men who did not take the vitamin B supplements. The same effect was not seen in women. “High dose supplements should not be taken for lung cancer prevention and in fact may increase risk of the disease in men,” the authors conclude. But while the study shows a worrisome link, it also has weaknesses. “It could be an association by chance,” says Adrian Esterman, a biostatistician at the Sansom Institute of the University of South Australia. Even the primary author does not believe the data should be interpreted to mean there is a causal link....

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