This is how vitamin A deficiency influences different diseases


The Vitamin A is an essential micronutrient for Health of people, which is essential to present a healthy vision, strengthens the immune system and stimulates reproduction, both male and female. In addition, it also influences the correct operation of different organs of the organism.

As a general rule, we can incorporate vitamin A into the body through the consumption of a wide variety of foods. In beef, fish, poultry or dairy products we find preformed vitamin D; while in foods such as fruits, vegetables and vegetables we obtain doses of provitamin A.

As explained by the National Institute of Health in the United States, the most common type of provitamin A present in foods and vitamin supplements is beta-carotene.

Thus, thanks to the wide variety of foods that contain this vitamin among their composition, cases of vitamin A deficiency are very rare. Of course, in underdeveloped countries or areas of poverty if this phenomenon usually occurs due to malnutrition.

One of the main effects of a lack of vitamin A is xerophthalmin, a disease related to the inability to see in low light. Sometimes it can lead to complete blindness.

Other diseases linked to vitamin A

For years, different scientific and research teams have analyzed the behavior of vitamin A to find out how it can affect health. Investigations that continue to be carried out and will continue in the future. Thus, below we explain some links of vitamin A with different diseases.


According to numerous studies, people who eat a good amount of foods rich in beta-carotene (provitamin A) may have a lower risk of developing certain types of cancer, such as prostate or lung cancer.

However, to date no research work has been able to demonstrate with evidence that vitamin A or beta-carotene supplements prevent cancer or reduce mortality in the event of developing this disease.


Measles is a disease practically eradicated in the world. However, it has been found that children with vitamin A deficiency tend to present with a more serious picture of the disease. In these cases, the intake of supplements of this micronutrient can help reduce diarrhea and fever typical of measles.

Macular degeneration

Frontal vision loss or age-related macular degeneration in people is among the most common causes of vision loss. Supplements based on antioxidants, zinc, copper, and beta-carotene offered promising results in delaying vision loss; as reported from the National Institute of Health of the United States.

Foods with vitamin A

Once the importance of vitamin A for the body and the possible interactions of this vitamin with different diseases is known, it is convenient to talk about the different foods that help maintain the levels of this micronutrient in the body.

Vitamin A
Vitamin A foods – Canva

To obtain the recommended daily dose of vitamin A we can go to the following foods:

  • Beef liver and other organ meats such as kidneys.
  • Different types of fish, such as salmon or tuna.
  • Fruit.
  • Green leafy vegetables and varieties of vegetables, such as broccoli, carrots, or zucchini.
  • Fortified cereals.
  • Dairy products.

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