Datos habituales

Datos habituales: Vitamin A is a fat-soluble vitamin the body uses for normal vision, skin, cell growth, and its defense system; plant foods supply carotenoids such as beta-carotene that the body converts to it.
Ingesta baja: Low vitamin A status is commonly discussed in relation to poor night vision and dry eyes, and is rare where diets are varied.
Ingesta más alta: Very high preformed vitamin A from supplements or liver is commonly discussed in relation to headaches and, over time, liver strain, and is a particular point of caution during pregnancy; the commonly cited upper intake level for adults is 3,000 mcg a day. Beta-carotene from plants does not carry the same reports.

Ingestas de referencia

Cifras de referencia generales para un adulto típico — no son un objetivo personal ni una afirmación de necesidad.

Conviene saber

Preformed vitamin A is fat-soluble and can build up; very high supplemental amounts are a topic of caution, especially during pregnancy.