STUDY: New Human Data Challenges the “Universal NAD+ Decline With Age” Model
A new review of recent human NAD+ research argues that the classic narrative, “NAD+ declines with age”, is probably too simplistic.
Key Points
• Whole-blood NAD+ does not consistently decline with age in newer studies
• Tissue NAD+ (muscle, skin, brain) often does decline with aging
• Physically active older adults can maintain youthful muscle NAD+ levels
• NAD+ response to supplementation varies substantially between individuals
• Blood NAD+ may reflect intervention response better than biological aging itself
This is an important shift in the field. The newer data doesn’t invalidate NAD+ biology but gives it new nuance. The emerging picture is that NAD+ appears to be:
• Tissue-specific
• Highly dynamic
• Influenced by health status, activity level, and disease burden
• More individualized than previously thought
This is a reminder that biomarkers measured in blood don’t always represent what’s happening inside active tissues.
Full Article: https://renuebyscience.com/blogs/scientific-evidence-library/nad-aging-blood-biomarker-human-study