One more addition. This study shows that NR increased health span but not lifespan in mice: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5854409/#!po=0.724638 h

One more addition. This study shows that NR increased health span but not lifespan in mice: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5854409/#!po=0.724638 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5854409/#!po=0..... If it increased cancer risk and early cancer deaths in non-cancer prone mice then you would expect to see that in the data, but it doesn’t appear to be there. See Figure 1 on survival.