Fakta om A-vitamin
Ægte A-vitamin fra animalske produkter kaldes retinol. Beta-caroten er et vegetabilsk forstadium til A-vitamin, men retinol er seks gange stærkere end beta-caroten. Naturligt forekommende beta-caroten er uden bivirkninger, også for rygere.
Ægte A-vitamin fra animalske produkter kaldes retinol.
Beta-caroten er et vegetabilsk forstadium til A-vitamin, men retinol er seks gange stærkere end beta-caroten. Naturligt forekommende beta-caroten er uden bivirkninger, også for rygere.
A-vitamin kan kun frigøres fra leveren, hvis der er tilstrækkelig zink til stede.
A-vitamin beskytter og styrker slimhinderne i luftvejene, i underlivsorganerne og er derfor vigtig for immunforsvaret.
A-vitamin har betydning for øjne, fostervækst og frugtbarhed og for dannelsen af det kvindelige kønshormon, progesteron.
Beta-caroten beskytter mod solens skadelige stråler og fremmer bruning af huden.
Mangelfølger
Tørre slimhinder og øget infektionsrisiko. Hudproblemer som uren og tør hud, skældannelse, akne, eksem og psoriasis. Skøre negle og tørt, livløst hår. Dårligt nattesyn og nedsat smags- og lugtesans. Vækstproblemer hos fostre og børn. For meget A-vitamin kan skade fosteret, så undlad at eksperimentere med høje doser, og slet ikke under graviditet.
Kilde: “Sundhedshåndbogen”, af Pernille Lund og Marianne Palm
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