变老的明显迹象，是从这里开始的

[1] Lehallier B, Gate D, Schaum N, et al. Undulating changes in human plasma proteome profiles across the lifespan[J]. Nature medicine, 2019, 25(12): 1843-1850.

[2] hopkinsmedicine.org/health/conditions-and-diseases/presbycusis

[3] National Center for Health Statistics. Multiple Cause of Death 2018–2022 on CDC WONDER Database. Accessed May 3, 2024. https://wonder.cdc.gov/mcd.html

[4] Blanchflower D G. Is happiness U-shaped everywhere? Age and subjective well-being in 145 countries[J]. Journal of population economics, 2021, 34(2): 575-624.

[5] Farage MA, Miller KW, Elsner P, Maibach HI. Characteristics of the Aging Skin. Adv Wound Care (New Rochelle). 2013 Feb;2(1):5-10. doi: 10.1089/wound.2011.0356. PMID: 24527317; PMCID: PMC3840548.

[6] Sermon A, Slock C, Coeckelberghs E, Seys D, Panella M, Bruyneel L, Nijs S, Vanhaecht K. Quality indicators in the treatment of geriatric hip fractures: literature review and expert consensus. Arch Osteoporos. 2021 Oct 8;16(1):152. doi: 10.1007/s11657-021-00995-6.

[7] [1]Kremer S, Bult JH, Mojet J, Kroeze JH. Food perception with age and its relationship to pleasantness. Chem Senses. 2007 Jul;32(6):591-602.