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Nature 574 (7777), 268272 (2019)

doi:10.1016/s0301-2115(97)00262-5

Plan protocols of at least 4-6 weeks minimum, with follow-up testing to objectively assess changes
This led to the idea that niacin could be causing some other negative effect. In a study published in early 2024, Dr

Gastrointestinal health
