<p>Model: Cybrids composed of Rho0 cells with human platelet mitochondrial DNA from participants between 7 days old and 99 years old<br />
Dosage: 5 mM of n-Acetyl-L-Cysteine and 3 mM of nicotinamide riboside, with medium changed every three days until the cell population reached between 1 and 10 million</p>


New Study: Combining NR with NAC May Slow Telomere Shortening

New research suggests that nicotinamide riboside (NR) combined with N-acetyl cysteine (NAC) prevents telomere shortening linked to genetic sequences within the cell’s powerhouse (mitochondria) in human cells.

(Telomeres [highlighted in gold] at the ends of a chromosome | NAD.com)

A new study suggests the NAD+ precursor NR combined with the antioxidant NAC may counteract telomere shortening, a hallmark of aging.

Aging &amp; Longevity

Discover proven anti-aging and longevity drugs that extend lifespan. Lifestyle, nutrition, sleep, exercise, and toxin avoidance, all in the best and most comprehensive guide.

Explore the most effective longevity interventions—nutrition, fasting, sleep, exercise, and mouse-tested drugs that extend lifespan in real studies.

Longevity Prescription: Diet, Fasting, and Proven Anti-Aging Strategies

Ranked fourth on the Rejuvenation Olympics leaderboard, 30-year-old Siim Land lists the supplements he takes to stay young. 


NAD+ Supercharges Immune System Recovery in Older Mice

Researchers from the University of California, Berkeley, found that young mice need NAD+ breakdown, while old mice need NAD+ boosting.

Immunity

After accounting for previously unaddressed issues, researchers find that human lifespan is over 50% heritable, challenging previous estimates of 25%.  


Joris Deelen, PhD, one of the researchers on the project (image: stern.de).

Search Result: NAC

New Study: Combining NR with NAC May Slow Telomere Shortening

Longevity Prescription

Fourth Slowest Ager in World Siim Land’s 2025 Longevity Supplement Protocol

NAD+ Supercharges Immune System Recovery In Older Mice, Hurts Blood Stem Cells of Young Mice

New Study Shows Lifespan is 50% Genetic, Doubling Previous Estimates