The theory says our brain allocates resources to energy-consuming senescent cells at the body’s expense, accounting for gray hair, muscle shrinkage, and other signs of aging.

Aging &amp; Longevity

While improving immune health, the NAD+ (nicotinamide adenine dinucleotide) precursor NR (nicotinamide riboside) may induce anxiety-like behavior in stressed, aged mice. 


The study was funded by the National Institute on Aging, one of the National Institutes of Health (NIH). 

Immunity

A high but not low dose of nattokinase is associated with reducing artery plaque size by 36% in older adults. 

An ultrasound of the carotid artery with arrows pointing to plaques (image: avicennacardiology.com). 

Cardiovascular

A natural supplement, quercetin, targets age-promoting senescent cells, reduces inflammation, and counteracts blood vessel aging in men with heart disease. 

Study conducted at the University of Montreal in Quebec, Canada (image: ledevoir.com) 

Clinical Trials

<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.

Search Result: Blood

Are Senescent Cells Turning Your Hair Gray? A New Aging Theory

Anti-Aging NAD+ Precursor Supplement May Promote Anxiety, New Study Shows

New Study Reveals: High-Dose Supplement Shrinks Arterial Plaque by 36%

A Natural Senolytic Supplement Curbs Heart Aging in New Clinical Trial

New Study: Combining NR with NAC May Slow Telomere Shortening