Asked by Richard Cummings on September 19, 2021
Categories: Healthy living Nutrition
Rating: 4.3/5 (48 votes)
Yes, high intakes of some forms of vitamin A can be harmful. Getting too much preformed vitamin A (usually from supplements or certain medicines) can cause dizziness, nausea, headaches, coma, and even death. High intakes of preformed vitamin A in pregnant women can also cause birth defects in their babies.
Is there a blood test for vitamin A? This test measures the level of retinol in the blood; retinol is the primary form of vitamin A in animals. Vitamin A is an essential nutrient required for healthy vision, skin growth and integrity, bone formation, immune function, and embryonicdevelopment.
What is the best form of vitamin A? Twoforms of vitamin A are available in the human diet: preformed vitamin A (retinol and its esterified form, retinyl ester) and provitamin A carotenoids [1-5].
Does vitamin A cause hair loss? VitaminA also helps skin glands make an oily substance called sebum. Diets deficient in vitamin A may lead to several problems, including hair loss ( 3 ). While it's important to get enough vitamin A, too much may be dangerous. Studies show that an overdose of vitamin A can also contribute to hair loss ( 4 ).
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