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This regulatory status means that quality control varies significantly between suppliers, reinforcing the importance of sourcing through a licensed medical provider rather than unregulated online sources
A cornerstone of Bryan Johnsons protocol
Peter Attia, a longevity physician, discusses NAD+ precursors: "While evidence is emerging, NAD+ boosting shows promise for mitochondrial health and longevity, though IV might not be optimalprecursors like NMN could be better."[33][20] On combinations, he cautions on long-term data but notes potential for metabolic disorders
FDA guidance for RUO-labeled in vitro diagnostic products explains that RUO labeling is meant to identify materials in a laboratory research phase and distinguish them from diagnostic contexts [16]
