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 you get too much vitamin A in food?
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.
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 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.
Can you overdose on vitamin A from spinach?
Pre-formed vitamin A is found in animal sources like fish oil, liver, and (to a lesser extent) milk and eggs. It is definitely possible to get too much of this form of vitamin A, especially if you're taking a lot of dietary supplements.
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