Cited by 35melanin and skin pigmentationRace, Genetics, and SocietySkin Protection and Aging

The evolution of human skin pigmentation: A changing medley of vitamins, genetic variability, and UV radiation during human expansion

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Lucock, Mark D.·2023·American Journal of Biological Anthropology

Abstract

This review examines putative, yet likely critical evolutionary pressures contributing to human skin pigmentation and subsequently, depigmentation phenotypes. To achieve this, it provides a synthesis of ideas that frame contemporary thinking, without limiting the narrative to pigmentation genes alone. It examines how geography and hence the quality and quantity of UV exposure, pigmentation genes, diet-related genes, vitamins, anti-oxidant nutrients, and cultural practices intersect and interact to facilitate the evolution of human skin color. The article has a strong focus on the vitamin D-folate evolutionary model, with updates on the latest biophysical research findings to support this paradigm. This model is examined within a broad canvas that takes human expansion out of Africa and genetic architecture into account. A thorough discourse on the biology of melanization is provided (includes relationship to BH4 and DNA damage repair), with the relevance of this to the UV sensitivity of folate and UV photosynthesis of vitamin D explained in detail, including the relevance of these vitamins to reproductive success. It explores whether we might be able to predict vitamin-related gene polymorphisms that pivot metabolism to the prevailing UVR exposome within the vitamin D-folate evolutionary hypothesis context. This is discussed in terms of a primary adaptive phenotype (pigmentation/depigmentation), a secondary adaptive phenotype (flexible metabolic phenotype based on vitamin-related gene polymorphism profile), and a tertiary adaptive strategy (dietary anti-oxidants to support the secondary adaptive phenotype). Finally, alternative evolutionary models for pigmentation are discussed, as are challenges to future research in this area.

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Research works printed but not linked: 3

  1. Littleton J., 1991, Living with civilisation: Proceedings of the Australasian Society for Human Biology, 15
  2. 10.1034/j.1600-0749.2003a.00041.x · DOI
  3. 10.1111/j.1749-6632.2003b.tb03199.x · DOI

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Authors
Lucock, M. D.
Affiliations
University of Newcastle Australia (AU)
Corresponding author
Lucock, Mark D.
Venue
American Journal of Biological Anthropology
Publisher
Wiley
Published
2022-06-25
Volume
180
Issue
2
Pages
252-271
ISSN
2692-7691 (ISSN-L)
OpenAlex
W4283519774
Cited by
35
References
115
Citations by year
2026: 12 · 2025: 12 · 2024: 6 · 2023: 5
FWCI
0.69
Type
journal article
Language
en
Open access
Locations
  • American Journal of Biological Anthropology (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • Figshare (submittedVersion, cc-by-nc)
  • NOVA (University of Newcastle Australia) (submittedVersion, cc-by-nc)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › melanin and skin pigmentation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Race, Genetics, and Society
  • Health Sciences › Medicine › Dermatology › Skin Protection and Aging
Keywords
human skin pigmentation, depigmentation, vitamin D, folic acid, ultraviolet radiation, melanization, folate biosynthesis, tetrahydrobiopterin, DNA repair, UV exposure, genetic polymorphism, dietary antioxidants, reproductive success
MeSH terms
Antioxidants, Folic Acid, Humans, Skin Pigmentation, Ultraviolet Rays, Vitamin A, Vitamin D, Vitamin K, Vitamins

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