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Gal (1971)
Effects of Oral Contraceptives on Human Plasma Vitamin A LevelsBrit. Med. J., 2
Gal (1972)
Vitamin A in Relation to Human Congenital MalformationsAdv. Teratology, 5
Yeung (1974)
Effects of Oral Contraceptives on Vitamin A Metabolism in the Human and the RatAm. J. Clin. Nutrition, 27
Prasad (1975)
Effect of Oral Contraceptive Agents on Nutrients. 11. VitaminsAm. J. Clin. Nutrition, 28
Supopark (1975)
Effect of Ovral, a Combination Type Oral Contraceptive Agent on Vitamin A Metabolism in RatsInt. J. Vit. Nutrition Res., 45
Kalter (1961)
Experimental Production of Congenital Malformations in Strains of Inbred Mice by Maternal Treatment with Hypervitaminosis AAm. J. Path., 38
Wild (1974)
Vitamin A, Pregnancy and Oral ContraceptivesBrit. Med. J., 1
Laurence (1953)
Changes in Serum Vitamin A Level during Human Menstrual CycleJ. Clin. Endocrin. Metab., 13
Briggs (1972)
Steroid Contraceptives and Plasma CarotenoidsContraception, 6
Glover (1976)
Seasonal Changes in the Plasma Retinol-Binding Holoprotein Concentration in SheepBrit. J. Nutrition, 36
Women taking oral contraceptives have about a 50 percent higher than normal concentration of retinol in their plasma. This returns to normal levels in less than four months after they stop taking the contraceptive pill.
Nutrition Reviews – Oxford University Press
Published: Sep 1, 1977
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