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 get vitamin A toxicity from food?
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.
How much is too much vitamin A from food?
The tolerable upper intake of 3,000 mcg of preformed vitamin A, more than three times the current recommended daily level, is thought to be safe. However, there is some evidence that this much preformed vitamin A might increase the risk of bone loss, hip fracture [9-11], or some birth defects.
Can I get too much vitamin A from vegetables?
And because pro-vitamin A is converted to retinol only as needed, there's no danger of getting too much vitamin A from plant sources. However, consuming large quantities of carotenoids can cause temporary and harmless discoloration of the skin.
Can you get too much vitamin A from eating 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.
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