Vitamin A

Although poor maternal vitamin A status is associated with preterm birth, intrauterine growth retardation, low birth weight, and increased maternal infection in developing regions of the world, vitamin A deficiency is quite rare in industrialized countries due the higher intake of the preformed vitamin (reti-nol). An increase of 50 mg/day for the entire pregnancy period is added to the EAR for nonpregnant adolescent girls and women, based on accumulation of vitamin A in the liver of the fetus. Excessive preformed vitamin A (>3000 mgRAE) should be avoided shortly before or during pregnancy, especially in the early months, because of its potential teratogenicity, so the upper limit for vitamin A intake in pregnancy is set at 3000 mg RAE/day for all women of childbearing age. An alternative dose schedule is up to 8500 RAE weekly during pregnancy. Fetal vitamin A toxicity and birth defects have also occurred from ingestion of isotretinoin and etrenti-nate, drugs used for treatment of severe cystic acne. High intakes of ^carotene (a precursor of vitamin A) do not have the same teratogenic effects.

Advanced Acne Elimination

Advanced Acne Elimination

There are so many misconceptions about what exactly causes acne and why certain people suffer from it while others live a blemish-free life, never having to experience the pain from excessive acne.

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