Nicotinamide mononucleotide (NMN) is a molecule that has been the subject of much research in recent years due to its potential anti-aging effects. NMN is a precursor nicotinamide adenine dinucleotide (NAD+), a molecule that plays a critical role in cellular energy production and DNA repair.

One recent study published in the journal Nature Communications found that NMN supplementation improved muscle regeneration and mitochondrial function in aged mice. The researchers also observed an increase in the expression of genes related to mitochondrial biogenesis and metabolism.

Another study published in the journal Cell Reports found that NMN supplementation improved glucose tolerance and insulin sensitivity in obese mice. The researchers also observed an increase in the expression of genes related to insulin signaling and glucose metabolism.

While these studies suggest that NMN may have beneficial effects on aging and metabolic health, it's important to note that they were conducted in animal models and further research is needed to determine if these effects translate to humans. Additionally, the safety and optimal dosing of NMN supplementation in humans are still being studied.