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Jones, Michael Camilleri, and Michael Horowitz
Excessive Vitamin B12 May Increase the Risk of Lung and Colon Cancer A large-scale 2017 study published in the Journal of Clinical Oncology found that males who supplemented with megadoses of vitamins B6 and B12 had a 30% to 40% increased risk of lung cancer compared to individuals who did not supplement
Community protocols describe a 50 mg/day starting phase lasting 1-2 weeks, escalating to 100-150 mg/day based on tolerance
It is not approved by the TGA for human or veterinary use and is not sold as a medicine, cosmetic or supplement
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