Comparison of other supplements consumed during the study
During the study, the percentage of people consuming other supplements in the placebo and NMN groups was 35.1% and 32.4%, respectively. Eight supplements (multivitamins, multiminerals, soy isoflavone, vitamin C, vitamin B complex, omega-3 fatty acids, lutein, and coenzyme Q10) were taken by over 10% of the total participants. Among them, the placebo group tended to consume more vitamin C, vitamin B complex, and omega-3 fatty acid supplements than the NMN group: N (placebo/NMN) = 4/2, 4/1, and 5/0, respectively. All the supplements consumed during the study are presented in Supplementary Table 