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Nutrition

The Effect of Vitamin E: What It Is and Where to Find It

David Janitzek

David Janitzek

2026-03-19
4 min. read
The Effect of Vitamin E: What It Is and Where to Find It
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As an antioxidant vitamin, it prevents cell aging and neutralizes free radicals. Its beneficial effects have been proven in the field of cancer and heart disease prevention. Understanding its action and the locations where it occurs is of great significance.

Działanie witaminy E

Witamina E jest zaliczana do antyoksydantów.. W środowisku hydrofobowym neutralizuje wolne rodniki.. Jako antyoksydant wykazuje działanie protekcyjnie w stosunku do nowotworów, choroby wieńcowej czy zmian miażdżycowych, jak również ma wpływ na prawidłowe funkcjonowanie narządów rozrodczych kobiet i mężczyzn [2].. W prewencji nowotworów najważniejszymi funkcjami witaminy E jest hamowanie wzrostu komórek, indukowanie apoptozy oraz nasilenie funkcji immunologicznej.. Tokotrienole wykazują silniejszą aktywność niż tokoferole.. Witamina E ma protekcyjny wpływ na utlenianie wielonienasyconych kwasów tłuszczowych.. Dodatkowo witamina E uczestniczy w regulacji aktywności kinazy białkowej C.. Jest to enzym, który bierze udział w przewodnictwie sygnałów między komórkami.. Witamina E może również regulować aktywność biologiczną komórek układu immunologicznego, uczestniczy w hamowaniu agregacji płytek krwi [3, 4].. Obecność tokoferoli i tokotrienoli chroni organizm przed starzeniem się.. Związki te skutecznie neutralizują wolne rodniki.. Zmniejszają ryzyko dusznicy bolesnej i zawału serca.. Witamina E wykazuje działanie wzmacniające i uelastyczniające naczynia krwionośne, również obniża krzepliwość krwi.. Powyższy związek nie jest syntetyzowany w organizmie, dostarczany wraz z pożywieniem jest gromadzony głównie w tkance tłuszczowej.. Wchłanianie witaminy E zależy od ilości tłuszczów w pożywieniu [1 – 3].. Korzystne działanie witaminy E jest również szeroko znane w kosmetologii, stanowi doskonały przeciwutleniacz, który stabilizuje strukturę tłuszczów nienasyconych.. W połączeniu z witaminą A jest wykorzystywana przy leczeniu trądziku pospolitego i egzemy.. Jest odporna na działanie wysokich temperatur, jednak co ważne, ulega rozpadowi pod wpływem światła i tlenu.. Witamina E wykazuje także działanie łagodzące przy występujących podrażnieniach i poparzeniach skóry, które powstają na skutek działania promieni słonecznych.. W literaturze wymieniane jest również działanie przeciwzapalne oraz przeciwobrzękowe.. Poprawia elastyczność skóry, dzięki dobremu przenikaniu przez naskórek.. Witamina E koi, nawilża, wygładza, również ujędrnia, wspomaga leczenie przebarwień i łagodzi kontaktowe zapalenia skóry [3, 4].. Niedobór witaminy E może być przyczyną występujących problemów z płodnością szczególnie u mężczyzn, pogorszeniem wzroku, a także może być związana ze spadkiem koncentracji.. U osób starszych są możliwe niedobory witaminy na skutek zaburzeń wchłaniania tokoferoli w przypadku biegunki tłuszczowej, czy usunięcia części jelita cienkiego [4].. Jej niedobór może mieć wpływ na zaburzenia neurologiczne, które powstają w wyniku peroksydacji błon komórkowych neuronów oraz na skutek procesów neurodegeneracyjnych [1, 2].

Naturalne źródła tokoferoli – gdzie szukać witaminy E w diecie?

Witamina E, znana również jako tokoferol, występuje przede wszystkim w produktach pochodzenia roślinnego, zwłaszcza w olejach tłoczonych na zimno, nasionach, orzechach oraz niektórych warzywach i owocach. Jej najbogatszymi źródłami są olej z kiełków pszenicy, olej słonecznikowy, oliwa z oliwek extra virgin, orzechy laskowe, migdały oraz nasiona dyni. Ponadto, witaminę E można znaleźć w rybach morskich (takich jak makrela, łosoś czy tuńczyk), pełnoziarnistych produktach zbożowych, jajach, a także w zielonych warzywach liściastych, takich jak szpinak, jarmuż czy brokuły. Artykuł prezentuje szczegółowe dane dotyczące zawartości witaminy E w 100 g wybranych produktów spożywczych, podkreślając jej kluczową rolę w ochronie komórek przed stresem oksydacyjnym oraz w prewencji chorób cywilizacyjnych, w tym nowotworów. Ze względu na potencjalne ryzyko związane z nadmierną suplementacją, zaleca się pozyskiwanie tej witaminy głównie z zrównoważonej diety, bogatej w wymienione wyżej naturalne źródła.
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