1.https://www.cdc.gov/nchs/products/databriefs/db405.htm#:~:text=women%20than%20men.-,The%20age%2Dadjusted%20prevalence%20of%20osteoporosis%20at%20either%20the%20femur,higher%20among%20women%20than%20men.
2. https://www.mdpi.com/1422-0067/25/22/12139#:~:text=Likewise%2C%20androgens%20play%20a%20critical,and%20RANKL%2C%20which%20promote%20osteoclastogenesis.
3.https://www.spandidos-publications.com/10.3892/mmr.2017.6168#:~:text=OPG%2C%20which%20is%20a%20decoy,RANK%20(11%2C12).
4.https://pmc.ncbi.nlm.nih.gov/articles/PMC10608105/#:~:text=The%20RANK%E2%80%93RANKL%E2%80%93OPG%20System,%2C%20Immunity%2C%20and%20Cancer%20%2D%20PMC
5. https://www.longdom.org/open-access/postmenopausal-osteoporosis-causes-mechanisms-risks-diagnosis-treatment-and-prevention-guide1103308.html#:~:text=As%20bone%20mass%20declines%2C%20the,or%20even%20during%20daily%20activities.
6.https://pubmed.ncbi.nlm.nih.gov/35193674/
7.https://pmc.ncbi.nlm.nih.gov/articles/PMC12338550/#:~:text=Abstract,ATP%20generation%20through%20NADH%20oxidation.
8.https://pmc.ncbi.nlm.nih.gov/articles/PMC7442590/#:~:text=In%20humans%2C%20NAD%2B%20concentration%20has,as%20compared%20to%20newborns15.
9.https://pmc.ncbi.nlm.nih.gov/articles/PMC3139257/#:~:text=The%20mean%20age%20of%20this,group%20more%20than%2060%20years.
10. https://pubmed.ncbi.nlm.nih.gov/40053115/
11.https://www.endocrine.org/patient-engagement/endocrine-library/menopause-and-bone-loss#:~:text=Research%20indicates%20that%20up%20to,a%20fracture%20during%20their%20lifetime.
12. https://pubmed.ncbi.nlm.nih.gov/32564438/
13.https://pmc.ncbi.nlm.nih.gov/articles/PMC12338550/#:~:text=Loss%20of%20estrogens%20at%20menopause,the%20osteoclast%20lineage1%E2%80%934.https://pubmed.ncbi.nlm.nih.gov/32564438/