Model: Young acquired niacin dependency (ANDY) mice. 
Dosage: 30 mg/kg/day of niacin

Mice engineered to have low body-wide NAD+ levels exhibit a shortened lifespan and widespread physical decline, which is largely reversed with the NAD+ booster niacin. 

Model: Female Balb/c mice exposed to ultraviolet radiation 
Dosage: 2%, 5%, 7.5%, or 12.5% of nicotinamide (weight/volume) applied topically, once daily, five times per week

The NAD+ (nicotinamide adenine dinucleotide) precursor nicotinamide prevents skin aging, in part by targeting age-promoting senescent cells in mice. 


Participants: Healthy males (age range: 70-76)
Dosage: 1 mg per day of rapamycin for 8 weeks

Supplementing with rapamycin leads to improvements in cardiac and vascular function in older men, suggesting this longevity-associated drug may counteract cardiovascular aging. 

Nicolas Musi, MD, professor of medicine and an author of the study (image: sanantoniomag.com). 

Cardiovascular

Does NAD+ (nicotinamide adenine dinucleotide) really help with aging? A team of international scientists reviews the latest and ongoing clinical trials.

Part of the research team, including Dr. Evandro Fei Fang (middle), from the University of Oslo and Akershus University Hospital in Norway (image: med.uio.no). 

Model: C57BL/6J mice, J20 mice, and 3xTg mice 
Dosage: 4.3 μEq l−1 of lithium in drinking water starting at 10 to 12 months of age and continued for 10 to 14 months during aging

Harvard Study: A Low Dose of Lithium May Preserve Cognitive Resilience with Age

Researchers uncover significantly lower brain lithium levels in Alzheimer’s disease patients, and supplementing with a low-dose lithium salt restores memory in an Alzheimer’s disease mouse model.

(The study’s principal investigator, Bruce Yankner [center], with four laboratory employees | The Boston Globe)

A Harvard study suggests lower levels of lithium in the brains of patients with Alzheimer’s disease and that lithium supplementation may help preserve cognitive resilience.

Search Result: Mayo

New Mayo Clinic Study: Forcibly Depleting NAD+ Shortens Lifespan

NAD+ Booster Nicotinamide Counters Skin Aging and Cell Senescence, New Study Shows

Longevity Drug Rapamycin Improves the Heart of Older Adults, New Study Shows

NAD+ and Aging: What the Latest Research Says

Harvard Study: A Low Dose of Lithium May Preserve Cognitive Resilience with Age