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Pregnancy and Breeding Caution: Safe use in pregnant or breeding animals has not yet been scientifically proven

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doi:10.1159/000053183 Heffernan M, Summers RJ, Thorburn A, et al

None of these pathways directly substitute for another, which is part of why researchers interested in a fuller picture of metabolic regulation may look at all three within the same body of literature not to combine effects, but to understand how separate systems might interact at a mechanistic level

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If you are a strict vegan, for example, you are more likely to suffer deficiencies of various nutrients