Participants: Healthy middle-aged to older adults (average age: ~53 years) 
Dosage: 1,000 mg/day of urolithin A for 28 days

Supplementing healthy adults with urolithin A —a compound produced by our gut bacteria— counters signs of age-related immune system decline.  

Principal investigator Dr. Florian R. Greten (image: hessen-schafft-wissen.de).

Immunity

Columbia University scientists find that inflammation increases the risk of common chronic age-related diseases only in people from industrialized populations. 

Columbia University in New York City (image: Columbia.edu). 

Model: Male Sprague-Dawley rats 
Dosage: 400 mg/kg of magnesium L-theanine and 600 mg/kg of nicotinamide riboside administered orally for 40 days

Scientists find that treating rats with magnesium L-theanine and nicotinamide riboside (NR) counteracts stress-induced metabolic, gut, and liver aging. 

Study conducted by researchers from Firat University in Turkey (image: turkeyuniversity.org)

Model: UM-HET3 Mice 
Dosage: 0, 75, 150, 300, 600, and 1200 ng epicatechin/mg food; 0, 0.075, 0.15, 0.3, 0.6, and 1.2 ng halofuginone/mg food; and 0, 37.5, 75, 150, 300, and 600 ng mitoglitazone/mg food, all given ad libitum in food starting at seven months old

Three Compounds Show Promise for Male Longevity

Data from a rigorous longevity study show promise for three new compounds, adding to the repertoire of mouse lifespan-extending substances.

(The three compounds’ effects on median lifespan extension | Rapamycin Longevity News)

The world’s most rigorous longevity study presents data showing promise for three new lifespan-extending compounds in male mice.

Aging &amp; Longevity

Model: Primary hippocampal neurons from non-transgenic C57BL/6 (nTg) and triple-transgenic 3xTg-AD mice; age groups: young (2–6 mo), middle (8–11 mo), and old (17–28 mo).
Dosage: Nicotinamide 2 mM + EGCG 2 µM applied to cultured neurons for 16 h (in vitro).

Study shows that brief nicotinamide + EGCG treatment restores neuronal energy in 16–24 hours, restores autophagy, reduces amyloid-beta buildup, and boosts neuron survival by ~22% in aging/Alzheimer’s lab models.

Search Result: Green Tea

Urolithin Supplement Counters Immune System Aging, New Human Trial Shows

The Inflammation Myth: New Insights on Aging

New Research: Magnesium, L-Theanine, NAD+ Combo Counters Stress Aging

Three Compounds Show Promise for Male Longevity

Nicotinamide + EGCG Reboot Autophagy and Ease Hallmarks of Brain Aging