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In obesity, NNMT activity is unusually high in fat cells, which means a lot of nicotinamide gets thrown out before it can be turned into NAD+

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"This study does present some compelling evidence suggesting that supplementation with B12 can cause or exacerbate acne in a subset of individuals," said Dr
Doctors and veterinarians have long prescribed B12 in oral and injection form to treat anemia and kidney ailments
