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Study shows NMN is effective in humans

18 May 2021 0 Comments
Study shows NMN is effective in humans

Study shows NMN is effective in humans

Study shows NMN is effective in humans

The quest to fully understand the cellular mechanisms responsible for metabolic health was advanced significantly by the publication in April 2021 of a study proving the efficacy on NMN supplementation in humans.

The study, undertaken by Scientists from Washington University School of Medicine (WUSM) in St. Louis, showed that NMN increases blood cell NAD+ levels and improves muscle insulin sensitivity and structure in aged, prediabetic women.

Elevant Chief Scientist Dr. Alessia Grozio, who herself has also published groundbreaking NMN research as part of a team at WUSM, explains the key elements of this study that has further highlighted the effects of NMN on human health.

Dr. Grozio, do the results of this study prove the efficacy of NMN in humans?

Yes. This study proves that the oral administration of 250 milligrams of NMN for 10 weeks in postmenopausal obese or overweight women with prediabetes (meaning they had higher than normal blood sugar levels, but the levels were not high enough to be diagnosed as having diabetes) has a robust effect on muscle insulin signaling (by increasing insulin-stimulated genes involved in skeletal muscle remodeling and regeneration), and on muscle insulin sensitivity (by improving insulin-stimulated glucose disposal rate).

Properly functioning insulin signaling is important to ensure a proper and coordinated biological response to insulin in different tissues. People who are resistant to insulin are at increased risk for developing Type 2 diabetes.

Moreover, the study also demonstrates that oral NMN administration was able to significantly increase basal NAD+ levels in certain cell types and metabolites derived from NAD+ turnover in skeletal muscle.

Additional good news is that the study also strongly indicates that NMN supplementation is safe in humans under the conditions used – no adverse events and no abnormalities were reported.

What are the key takeaways from this study?

For me, the main thing is that NMN has demonstrated efficacy in humans in the conditions described above.

It is also encouraging to see that the insulin-sensitizing effects of NMN in humans are consistent with previous preclinical studies. This is hopefully a positive sign that future clinical trials may also see results consistent with preclinical data that has indicated high potential benefits of NMN to health.

And finally, what implications does this study have for the future in-human research of NMN and NAD+?

This study demonstrated the insulin-sensitizing effects of NMN. Interestingly, nicotinamide riboside (NR – another NAD+ intermediate) did not demonstrate the same effects. Results from several randomized controlled trials conducted in middle-age and older-adult men using NR did not show any effects on whole-body or muscle insulin sensitivity (Dollerup OL et al, 2018; Dollerup OL et al, 2020; Remie CME et al., 2020, Elhassan Y S et al. 2019).

So, although a direct comparison can’t be undertaken since the effects of NMN and NR were not analyzed side by side in the same experimental conditions, this potentially suggests that each NAD+ precursor (i.e., NMN, NR and others) may have different beneficial effects or molecular mechanisms in humans depending on the tissue and/or disease. This study has highlighted that future clinical studies will need to take in close consideration the dose, period of treatment, diversity and gender of subjects and disease analyzed.

Discover Elevant Prime


Elevant Prime capsules were created in collaboration with some of the world’s leading NMN experts – including Dr. Alessia Grozio as featured above. Our extensive program of in-human clinical research places us at the cutting-edge of global NMN research and helps us create what we believe are the best NMN-based products available today.

Prime contains our breakthrough NMN-C®, formulated for cell nourishment and engineered to optimize bodywide health and support healthy aging.


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