Nicotinamide Mononucleotide Increases Muscle Insulin Sensitivity in Prediabetic Women
NMN improved muscle insulin sensitivity; several other metabolic measures did not change.
Original source2021
THE INGREDIENTS
NMN / NR
Human longevity remains unproven
Original conceptual model
Research pathway
NAD precursors
NAD-related markers
Not established
Longer human life
A biomarker is not a lifespan result
View the full-width diagram
Swipe horizontally to explore the diagram at its original size.
Read diagram relationships
- NAD precursors → NAD-related markers
- NAD-related markers → Longer human life: Not established
Promising biochemical questions, with human studies that mostly measure short-term biomarkers.
The mechanism
NMN and NR are precursors in pathways that produce NAD+, a molecule involved in cellular metabolism.
Where it may apply
Research asks whether changing NAD metabolism leads to clinically useful effects.
Limits & context
Small NMN and NR trials do not establish longer life, broad rejuvenation or equivalence between the two compounds.
Context before use
Short-term tolerability is not long-term safety. Commercial anti-aging claims exceed these trial outcomes.
UPSTREAM
Research sources
Chronic Nicotinamide Riboside Supplementation Is Well-tolerated and Elevates NAD+ in Healthy Middle-aged and Older Adults
NR increased NAD-related measures and was tolerated during this short trial.
Original source2018
CONNECTED PEOPLE
Related people to explore
These are thematic connections, not endorsements of every use described here.
RESEARCH & LEARNING
Take the question further
Vitamin D for stronger bones: why did a large fracture trial find no benefit?
Vitamin D is necessary for bone mineralization, but necessity does not mean that adding more prevents fractures in every population.
2 source recordsRead the lesson
Does vitamin D prevent cancer or heart disease in generally healthy adults?
Compare vitamin D biology, blood measurements and disease prevention without treating them as interchangeable outcomes.
2 source recordsRead the lesson
What does creatine actually add to strength training?
Understand the short-burst energy system before comparing creatine with protein powders, stimulants or endurance fuel.
2 source recordsRead the lesson