Why is too much vitamin A BAD FOR YOU?
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..
Should I take a vitamin A supplement?
Don’t take more than the RDA of vitamin A unless your doctor recommends it. High doses of vitamin A have been associated with birth defects, lower bone density, and liver problems. People who drink heavily or have kidney or liver disease shouldn’t take vitamin A supplements without talking to a doctor.
Is 5000 IU of vitamin A Safe?
How much vitamin A is enough? Until 2001, the dietary reference intake for adult men was 5,000 international units (IU) a day, or 1,500 micrograms (mcg). Levels of up to 10,000 IU (3,000 mcg) have been considered safe.
What form of vitamin A is best?
The best sources of vitamin A are:Cod liver oil.Eggs.Fortified breakfast cereals.Fortified skim milk.Orange and yellow vegetables and fruits.Other sources of beta-carotene such as broccoli, spinach, and most dark green, leafy vegetables.
How much vitamin A is too much?
The recommended daily allowance (RDA) for vitamin A is 900 mcg and 700 mcg per day for men and women, respectively — which can be easily reached by following a whole-foods diet (27). However, it’s important not to exceed the tolerable upper limit (UL) of 10,000 IU (3,000 mcg) for adults to prevent toxicity (27).