Metabolic age

{{Short description|Age approximation using basal metabolic rate}} '''Metabolic age''' is calculated by comparing one's basal metabolic rate to the average of one's chronological age group.<ref name="Anderson2019">{{Cite journal |vauthors=Anderson C, Sloan A, Dupree L, Walker B |date=June 2019 |title=Younger Relative Metabolic Age Is Associated with a More Favorable Body Composition and Plant-based Dietary Pattern (P21-038-19) |journal=Curr Devel Nutr |volume=Jun |issue=3(Suppl 1) |doi=10.1093/cdn/nzz041.P21-038-19 |pmc=6575031 |doi-access=free}}</ref><ref>{{Cite journal |last=Majzoub |first=A. |last2=Talib |first2=R.A. |last3=Canguven |first3=O. |last4=Elbardisi |first4=H. |last5=Arafa |first5=M.M. |last6=Khalafalla |first6=K. |last7=Alsaid |first7=S.S. |year=2017 |title=Metabolic age versus chronologic age effect on the gonadal state |url=https://www.fertstert.org/article/S0015-0282(17)30674-X/fulltext |journal=Fertility and Sterility |volume=108 |issue=3 |pages=e46-e47}}</ref>

All the components in the body require various levels of energy to be maintained. Body fat requires much less energy than lean muscle, as lean muscle is much more metabolically active and therefore requires more energy expenditure to remain in homeostasis. If comparing two individuals, with all variables being equal, the person with more lean muscle mass will have a higher basal metabolic rate, and therefore, a lower metabolic age in comparison to those with the identical chronological age.<ref>{{Cite news |last=Kevin O'Sullivan |date=7 February 2019 |title=Q&A: Everything you need to know about your metabolic age |url=https://www.irishtimes.com/news/health/q-a-everything-you-need-to-know-about-your-metabolic-age-1.3785889 |access-date=20 May 2022 |work=The Irish Times}}</ref>

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Category:Senescence