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. 


Top Evidence-Based Interventions to Lower Biological Age

Epigenetic aging clocks estimate biological age based on DNA molecular tagging patterns, and interventions like semaglutide and ketamine reduce these estimates in humans.

(The principal investigator behind the review on interventions that influence biological age, Dr. David Sinclair | The Society of the Four Arts)

As reviewed in this article, epigenetic aging clocks have estimated the effects of pharmaceutical interventions, lifestyle habits, supplements, and clinical interventions on biological age.

Aging &amp; Longevity

Participants: Healthy, overweight older adults 
Dosage: 6 mg/day of spermidine supplemented orally for 13 weeks

Oxford scientists find that spermidine, a naturally occurring molecule that declines with age, rejuvenates aging immune cells and improves vaccine protection in older adults. 


Study conducted at the University of Oxford in England. 

Immunity

Participants: Prefrail older adults
Dosage: 50 mg/day of losartan for at least 8 weeks

Losartan, a common blood pressure medication, increases the survival rate of mice and improves the metabolic outlook of pre-frail older adults. 

Principal Investigator of the study, Dr. Peter M. Abadir (image: jhu.edu).

Model: Young (2- to 4-month-old) and aged (9- to 10-month-old) C57Bl/6JR mice, APP/PS1 mice, and 5xFAD mice 
Dosage: 0.2 mg/mL of doxycycline in drinking water starting at least 7 days before surgery and ceased 2 days before the partial cellular reprogramming window for engram tagging, after which it was immediately reintroduced

Gene Therapy Restores Cognitive Function in Aging and Alzheimer’s Disease

Delivering a gene therapy targeting ensembles of neurons that store memories restores learning and memory capabilities in mouse models of aging and Alzheimer’s disease.

(The study’s principal investigator, Professor Johannes Gräff | 24 Heures)

A partial cellular reprogramming gene therapy targeting memory trace cells restores facets of learning and memory in aged mice and those modeling Alzheimer’s disease.

Search Result: UV light

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

Top Evidence-Based Interventions to Lower Biological Age

Anti-Aging Spermidine Boosts Immune System, New Study Shows

New Johns Hopkins Study: FDA-Approved Losartan May Extend Lifespan

Gene Therapy Targeting Memory-Encoding Neurons Restores Cognitive Function in Aging and Alzheimer’s Disease