References:
1) "Effect of beta-hydroxy-beta-methylbutyrate on protein ...." https://pubmed.ncbi.nlm.nih.gov/20460233/. Accessed 22 Dec. 2020.
2) "Original Article Effect of β-hydroxy-β-methylbutyrate ...." https://www.sciencedirect.com/science/article/pii/S1728869X1060007X. Accessed 22 Dec. 2020.
3) "The age-related loss of skeletal muscle mass and ... - NCBI - NIH." https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6202460/. Accessed 26 Dec. 2020.
4) "Dissecting the energy needs of the body - PubMed." https://pubmed.ncbi.nlm.nih.gov/11224660/. Accessed 28 Dec. 2020.
5) "Muscular aging and its involvement in facial aging ... - PubMed." https://pubmed.ncbi.nlm.nih.gov/19576488/. Accessed 28 Dec. 2020.
6) "Declining muscle mass is part of aging, but not inevitable, from ...." https://www.health.harvard.edu/press_releases/declining-muscle-mass-is-part-of-aging-but-not-inevitable-from-the-march-2016-harvard-mens-health-watch. Accessed 24 Dec. 2020.
7) "Effect of beta-hydroxy-beta-methylbutyrate on protein ...." https://pubmed.ncbi.nlm.nih.gov/20460233/. Accessed 24 Dec. 2020.
8) "Impact of β-hydroxy β-methylbutyrate (HMB) on age-related ...." 23 Nov. 2016, https://pubmed.ncbi.nlm.nih.gov/27887984/. Accessed 28 Dec. 2020.
9) "Scientist Develops Protein Supplement as Possible Muscle ...." 15 Apr. 1996, https://apnews.com/article/1ce2fc55970e5233736e4ce8193d5c63. Accessed 28 Dec. 2020.
10) "How to Lose Muscle Mass: Workout and Diet Tips - Healthline." 24 Jun. 2020, https://www.healthline.com/health/how-to-lose-muscle-mass. Accessed 28 Dec. 2020.
11) "Effect of leucine metabolite beta-hydroxy-beta ... - PubMed." https://pubmed.ncbi.nlm.nih.gov/8941534/. Accessed 28 Dec. 2020.
12) "Original Article Effect of β-hydroxy-β-methylbutyrate ...." https://www.sciencedirect.com/science/article/pii/S1728869X1060007X. Accessed 28 Dec. 2020.
13) "International Society of Sports Nutrition Position ... - PubMed." 2 Feb. 2013, https://pubmed.ncbi.nlm.nih.gov/23374455/. Accessed 28 Dec. 2020.
14) "Effect of beta-hydroxy-beta-methylbutyrate ... - PubMed." https://pubmed.ncbi.nlm.nih.gov/26169182/. Accessed 28 Dec. 2020.
15) "The Potential of β-Hydroxy-β-Methylbutyrate as a New ...." 31 Oct. 2017, https://link.springer.com/article/10.1007/s40266-017-0496-0. Accessed 28 Dec. 2020.
16) "Horsetail for Skin, the Anti-Aging Fern - Annmarie Gianni." https://www.annmariegianni.com/horsetail-the-anti-aging-skin-tightening-fern/. Accessed 24 Dec. 2020.
17) "Randomized, Double-Blind Clinical Trial to ... - NCBI - NIH." 4 Mar. 2014, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3960516/. Accessed 25 Dec. 2020.
18) "Horsetail: Benefits, Uses, and Side Effects - Healthline." 28 May. 2020, https://www.healthline.com/nutrition/horsetail. Accessed 25 Dec. 2020.
19) "Inhibition of human in vitro osteoclastogenesis by ... - NCBI - NIH." 29 Oct. 2012, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6495422/. Accessed 25 Dec. 2020.
20) "Equisetum arvense L. Extract Induces Antibacterial Activity ...." 14 Feb. 2018, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5832138/. Accessed 25 Dec. 2020.
21) "Vitamin K as a Powerful Micronutrient in Aging ... - NCBI - NIH." 25 Aug. 2019, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6747195/. Accessed 25 Dec. 2020.
22) "The Vitamin Deficiency Written All Over Your Face - Healthy ...." https://www.thehealthyhomeeconomist.com/the-vitamin-deficiency-that-is-written-all-over-your-face/. Accessed 25 Dec. 2020.
23) "Wrinkles on Menopausal Woman's Face Can Predict Bone ...." 7 Jun. 2011, https://www.aarp.org/health/healthy-living/info-06-2011/wrinkles-can-predict-bone-density.html. Accessed 25 Dec. 2020.
24) "Severity of facial wrinkles may predict bone density in early ...." 6 Jun. 2011, https://www.sciencedaily.com/releases/2011/06/110604181911.htm. Accessed 25 Dec. 2020.
25) "Beyond deficiency: potential benefits of increased intakes of ...." https://pubmed.ncbi.nlm.nih.gov/15309455/. Accessed 25 Dec. 2020.
26) "Vitamin K2 in bone metabolism and osteoporosis - PubMed." https://pubmed.ncbi.nlm.nih.gov/15771560/. Accessed 25 Dec. 2020.
27) "8 Foods High in Vitamin K2 and Why You Need It - WebMD." 22 Oct. 2020, https://www.webmd.com/diet/foods-high-in-vitamin-k2. Accessed 28 Dec. 2020.
28) "Biotin - Health Professional Fact Sheet." 3 Jun. 2020, https://ods.od.nih.gov/factsheets/Biotin-HealthProfessional/. Accessed 25 Dec. 2020.
29) "Biotin - NCBI - NIH." 18 Feb. 2016, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4757853/. Accessed 26 Dec. 2020.
30) "Biotin - Linus Pauling Institute - Oregon State University." 21 Oct. 2015, https://lpi.oregonstate.edu/mic/vitamins/biotin. Accessed 26 Dec. 2020. "Biotin - Linus Pauling Institute - Oregon State University." 21 Oct. 2015, https://lpi.oregonstate.edu/mic/vitamins/biotin. Accessed 26 Dec. 2020.
31) "Marginal biotin deficiency is teratogenic - PubMed." https://pubmed.ncbi.nlm.
nih.gov/10632957/. Accessed 26 Dec. 2020.
32) "A Review of the Use of Biotin for Hair Loss - PubMed." https://pubmed.ncbi.nlm.nih.gov/28879195/. Accessed 26 Dec. 2020.
33) "A Double-blind, Placebo-controlled Study Evaluating the ...." https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3509882/. Accessed 26 Dec. 2020.
34) "Heritability and seasonal variability of vitamin D ... - NCBI - NIH." 13 Oct. 2010, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2980965/. Accessed 26 Dec. 2020.
35) "Live Longer with Vitamin D? - NCBI - NIH." 12 Mar. 2015, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4377887/. Accessed 26 Dec. 2020.
36) "Do vitamin D supplements reduce risk of early death ...." https://www.health.harvard.edu/staying-healthy/do-vitamin-d-supplements-reduce-risk-of-early-death. Accessed 26 Dec. 2020.