Vitamins A and D. Side effects at high doses

Vitamins A and D are the only ones with health risks by a hypervitaminosis.
Risks and symptoms of excess vitamin A
The fat-soluble vitamin A to be stored in the body when there is excess consumption. This is particularly the liver which accumulates this vitamin.
In the case of infants it may cause a bulging fontanelle due to increased cranial pressure, vomiting and anorexia in children. Adults can occur in nervous disorders, vomiting, headaches and drowsiness.

If consumption of vitamin A continuous symptoms can become chronic. Among these are:
- Peeling skin (mainly)
- Violent pains in the limbs
- Behavior disorders (apathy, fatigue, loss of appetite)
- Changes in the skin and hair
- Irritability

These symptoms are usually present in case of over-consumption of medicines or liver oils (doses of 25,000 IU for 30 days), especially when both vitamin A associated with vitamin D. The toxic dose for adults is often about more than 150,000 IU / day.
Moreover the excess of provitamin A (beta carotene) by overuse marronanaranjada results in pigmentation of the skin and mucous membranes, especially the palms, soles of the feet and genital mucosa. The same can happen to children who are you gorge yourself on carrots.

Risks and symptoms of excess vitamin D
This vitamin can accumulate in the liver, kidney, adrenal gland, spleen, lungs, small intestine and skeleton.

Data are deaths including hypervitaminosis D due to the uncontrolled and self-medication, especially when coupled with the intake of vitamin D had an increased exposure to ultraviolet rays of the sun.

There is the risk if you take 1 mg / day for a long time because in a few weeks a total dose over 30 mg.

Symptoms of hypervitaminosis of vitamin D are:

- Anorexia with nausea, vomiting, irritability, physical and mental fatigue.
- Polyuria (frequent urination)
- Frequent thirst
- Palpitations
- Hipercalcificacion with early ossification
- Deposits of calcium in soft tissues
- Increased calcium in sange
- Calcification of the kidney (kidney stones)
- Dehydration and hypertension

At stop taking disorders are sending in a few weeks although you can keep at renal calcification.

Related topics:
Vitamin C? Have risks or side effects?
Vitamin A, retinol or axeroftol
Vitamin D or calciferol
Cod liver oil: Properties

*Automatic Translation