Consuming large amounts of carotenoids (which the body converts to vitamin A) in food does not cause toxicity because carotenoids are converted to vitamin A very slowly. Usually, no symptoms occur.
Can I get too much vitamin A from food?
Can vitamin A be harmful? 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 severe headache, blurred vision, nausea, dizziness, muscle aches, and problems with coordination.
Can you overdose on vitamin A from carrots?
Though uncommon, people do overdose on vitamin A; however, when it comes to eating carrots an overdose is impossible. Since they are known for benefiting eye health and vision, carrots are thought to be loaded with vitamin A, but they actually don't have any vitamin A in its active form.
What causes elevated vitamin A?
Causes of hypervitaminosis A Excess amounts of vitamin A are stored in your liver, and it accumulates over time. Most people develop vitamin A toxicity by taking high-dose dietary supplements, possibly due to megavitamin therapy.
How much vitamin A is an overdose?
Acute vitamin A poisoning occurs quickly. It can happen when an adult takes several hundred thousand international units (IUs) of vitamin A. Chronic vitamin A poisoning may occur over time in adults who regularly take more than 25,000 IU a day. Babies and children are more sensitive to vitamin A.
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