David Sinclair· PhD
Lower NAD⁺ levels disrupt mitochondria-nuclear communication, accelerating muscle decline and increasing cellular senescence. Conversely, NMN/NR supplementation restores NAD⁺ and counters these changes in mice.
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The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
Lower NAD⁺ levels disrupt mitochondria-nuclear communication, accelerating muscle decline and increasing cellular senescence. Conversely, NMN/NR supplementation restores NAD⁺ and counters these changes in mice.
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This is our model based on a reversible decrease in nuclear NAD+ with aging in mice that leads to a decrease in TFAM due to pseudohypoxia. NMN reversed this aging process and increased energy production
For example, our lab showed miscommunication between the genes in the nucleus and mitochondria is a cause of mito failure with age - corrected by NMN