Recommended daily intake:
900 μg for men, 700 μg for women, Children, 2-5 years 350 μg, 6-9 years 400 μg, 10-13 years 600 μg (2).
Sources of Vitamin A
The vitamin exists in various chemical forms. The most common is retinol found in animal sources. Beta-carotene (pro-vitamin A) is obtained from the plant kingdom, which is converted into active vitamin A or retinol in the intestinal wall and liver. Red, orange and yellow fruits and vegetables, green leafy vegetables, eggs, dairy products.
Function:
Vitamin A is important for maintaining functions such as the immune system and for maintaining normal cell division, but also for maintaining mucous membranes, bones and skin.(1)
Lack of Vitamin A:
One of the first signs of a lack of Vitamin A is reduced growth. then you can have a reduced ability to see in dim light followed by drying and cornification of the membranes of the eye. in the worst case this can lead to blindness, this can be stopped or reversed if vitamin A is added. (1)
Sources:
1) Lande, Britt; Svihus, Birger: vitamin deficiency diseases in Store medical lexicon at snl.no. Retrieved June 6, 2021, from https://sml.snl.no/vitaminmangelsjörður.
2) https://norden.diva-portal.org/smash/get/diva2:704251/FULLTEXT01.pdf
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