Taking NMN, NAD⁺, or NR (nicotinamide riboside) won’t slow down or reverse aging, nor will they improve energy levels or reliably improve health markers.⁣ ⁣ NAD⁺ plays a core role in mitochondrial ATP production. It’s also critical for DNA repair and for proper function of sirtuins (proteins involved in gene expression, stress resistance, circadian rhythm, and more).⁣ ⁣ Yes, supplementing with NAD⁺ precursors can effectively increase blood NAD⁺ levels, and NAD⁺ does decline with age. But raising

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