These are the risks of excess vitamin A in the blood

The vitamin A is one of the most important micronutrients for the organism . Among the most relevant aspects of vitamin A, it stands out that it is key to prevent vision problems and helps maintain healthy skin , as well as being beneficial for bones and teeth.

There are two types of vitamin A : preformed vitamin A (present in beef, poultry, fish and dairy products) and provitamin A (fruits , vegetables and products of plant origin). The most common is provitamin A present in food and that can cause an excess of vitamin A in the body.

The amount of vitamin A that exceeds adequate levels depends on age and sex based on the following table:

400 mcg RAE

500 mcg RAE

Children 1 to 3 years of age

300 mcg RAE

400 mcg RAE

Children from 9 to 13 year old

600 mcg RAE

Teen boys of 14 to 18 year old

900 mcg RAE

700 mcg RAE

900 mcg RAE

700 mcg RAE

740 mcg RAE

770 mcg RAE

Stage of life Recommended amount
From birth to 6 months of age
Babies from 7 to 12 months of age
Children 4-8 years of age
Adolescent girls of 14 to 18 year old
Adult men
Adult women
Pregnant adolescents
Pregnant women
Lactating adolescents one,200 mcg RAE
Breastfeeding women one,300 mcg RAE

Risks of excess vitamin A

Despite the virtues that vitamin A has in its correct standards, it is true that if we exceed the appropriate levels we can present a series of health problems. This phenomenon is called hypervitaminosis A and two types are distinguished:

  • Acute: This is caused by an excess of vitamin A in a relatively short period of time.
  • Chronic: It is when an excess of this micronutrient is taken during a long or prolonged period of time.

In the case of having hypervitaminosis A we can present a series of symptoms in the body, of lesser or greater severity. Among them, the following stand out:

  • Osteoporosis.
  • Bone pain and numbness.

  • Dizziness.
  • Irritability.
  • Blurred vision in children
  • Decreased appetite.
  • Drowsiness.
  • Fatigue.
  • Headache.
  • Enlargement of the liver and spleen.
Vitamin A

In fact, having too much preformed vitamin A can cause dizziness, nausea, coma, headaches and even death in the worst cases. For its part, in pregnant women it can also cause birth defects in the baby.

This is the limit for Vitamin A in the blood

These are the limits in which we must begin to be careful with the levels of vitamin A in the blood:

600 mcg

Children 1 to 3 years of age

600 mcg

900 mcg

Children from 9 to 13 year old

Adolescents of 14 to 18 year old

Ages Upper limit
From birth to 12 months of age
Children 4-8 years of age
one,700 mcg
two,800 mcg
Adults older than 19 year old 3,000 mcg

The foods that more vitamin A have are carrots, lettuce, spinach, cabbages, sweet potatoes, pumpkin or melon, among many others in which we must keep our eye to avoid eating them in excess or the opposite, since most foods with vitamin A are healthy.

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