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Are these substances actually vitamins A, C, and D and what roles do they play in the human body?
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Are these substances actually vitamins A, C, and D and what roles do they play in the human body?

Isabella Taylor
Isabella Taylor
Vitamins
Isabella Taylor Author
2026-03-15 Date
6 min. read article.read_time
3 Chapters
Vitamins are essential substances for the proper functioning of the body, controlling many processes that occur within our body. The term "vitamin" itself contains the word "vita", which means "life", indicating their crucial role.

Funkcja retinolu i jego pochodnych w organizmie ludzkim

Była jedną z pierwszych witamin odkrytych przez człowieka. Skutki jej niedoboru były znane już w starożytności, co utrwaliło jej niezwykłą wartość w świadomości ludzi. Aktywność biologiczną prezentują retinol i jego pochodne, β-karoten oraz niektóre inne związki z grupy karotenoidów. Źródłem aktywnych form witaminy A jest spożywana z pokarmem prowitamina A, głównie β-karoten. W produktach pochodzenia zwierzęcego witamina A występuje w postaci retinolu i jego pochodnych. Bogatym jej źródłem są podroby, ryby, jaja i sery produkowane z mleka. Retinol odpowiada za proces widzenia, odbieranie bodźców wzrokowych w siatkówce oka, integralność błon komórkowych, kontrolę przebiegu procesów różnicowania i wzrostu komórek organizmu, a także sprzyja zdolnościom regeneracyjnym. Nie tylko utrzymuje prawidłowy stan włosów, skóry czy paznokci, ale także działa ochronnie na nabłonek skóry i błony śluzowe. Bierze aktywny udział w syntezie wielu białek oraz przemianie lipidów, a ze względu na swe właściwości przeciwutleniające, chroni przed działaniem wolnych rodników.

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