Function:
- vision and eye health
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3546623/ - protect and maintain the cornea of the eye
https://www.ncbi.nlm.nih.gov/books/NBK431094/ - supports immune function
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3471201/ - supports both male and female reproduction and embryonic development.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3257687/ - Prevent Macular Degeneration
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5119484/ - Potent antioxidant
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4321000/
Deficiency symptoms
- Dry skin or dermatitis
https://www.nature.com/articles/ejcn2009148 - Severe dry eye and corneal ulceration
https://www.ncbi.nlm.nih.gov/pubmed/15850971 - Night blindness
https://www.ncbi.nlm.nih.gov/pubmed/25774260 - Recurrent abortion
https://www.ncbi.nlm.nih.gov/pubmed/9857484 - Delayed growth
https://www.ncbi.nlm.nih.gov/pubmed/10648265 - Poor wound healing
https://www.ncbi.nlm.nih.gov/pubmed/11074878
Foods rich in vitamin A
Recommended daily intake= 900 mcg= 3000 IU
- Paprika:
Contain: 52742 IU
% Daily value: 1055%
- Grape leaves:
Contain: 27520 IU
% Daily value: 550%
- Sweet potato, cooked, baked in skin, without salt:
Contain: 19217 IU
% Daily value: 384% - Carrot, raw [Includes USDA commodity food A099]
Contain: 16705 IU
% Daily value: 334% - Broccoli leaves, raw:
Contain: 16001 IU
% Daily value: 320% - Kale, raw:
Contain: 15376 IU
% Daily value: 308% - Spinach, raw:
Contain: 9376 IU
% Daily value: 188% - Lettuce, cos or romaine, raw:
Contain: 8711 IU
% Daily value: 174% - Parsley, raw:
Contain: 8425 IU
% Daily value: 168% - Pumpkin, raw:
Contain: 7385 IU
% Daily value: 148%
Overdose: more than 1,500 mcg daily
The excess: the body stores excess amounts, primarily in the liver, and these levels can accumulate.
Type: fat soluble vitamin
https://ods.od.nih.gov/factsheets/VitaminA-HealthProfessional/#h8
Side effects of hypervitaminosis A:
- Hypercalcemia leading to nephron-calcinosis and renal impairment
https://www.ncbi.nlm.nih.gov/pubmed/25119682
https://www.ncbi.nlm.nih.gov/pubmed/25188737 - Hypertension and depression
https://www.ncbi.nlm.nih.gov/pubmed/15543093 - Osteoporosis
https://www.ncbi.nlm.nih.gov/pubmed/10860393 - liver disease
https://www.ncbi.nlm.nih.gov/pubmed/24563496 - spontaneous fracture
https://www.ncbi.nlm.nih.gov/pubmed/28511966 - reduced food intake, and general effects on growth
https://www.ncbi.nlm.nih.gov/pubmed/29697007
