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Are researchers measuring vessel markers or migration markers

Recent supplementation or acute illness may affect interpretation

Researchers maintaining ongoing protocols may prefer nasal spray during travel periods when carrying injection supplies is inconvenient, returning to injection when practical logistics allow

doi: 10.1002/ana.21885 Bai J, Cederbaum AI

As NAD levels naturally decline with age, supplementation with NAD precursors like Nicotinamide Riboside (NR) or Nicotinamide Mononucleotide (NMN) can help restore these levels, potentially improving energy metabolism and supporting healthy aging

its use for the wellness and anti-aging purposes discussed here is off-label