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Antioxidant, pre-form vitamin A, (((plant based food in dark green, orange…

- - - - Pre-form = most active form of vitamin A in our body
  - - - retinol
        
        Non-antioxidant roles
        
        promote bone growth and cell differenation
        
        prevent infections in body including skin, lung eye, bladder infection
        
        required to produce T-cell, which in turn help to support the immune system
        
        protect eyes
        
        Deficencies
        
        prevent animal reproduction, early age growth and consequences of life long bone health problems
        
        Mealse: a common disease in developing countries that is most susceptible to children due to lack of Vitamin A required to produce T-cell
        
        result in health issues in vision such night blindness and Xerophthalmia
        
        unable to produce muscous and prone to infections called keratinization
        
        Antioxidant roles
        
        none
        
        Toxicity
        
        occurs due to large intake animal food and large dose of retinol supplements
        
        symptoms includes loss of appetite, nausea, headache, dry skin
        
        teratogenic: overdose during pregnancy causes birth defect
        
        causes build up of free radical
        
        exclusively found in animal based food with high source of protein; plant based food would not provide vitamin A and required to take supplements
        
        Beef liver, 2% milk, egg, cheese
    - - has shown effectiveness in invitro experiements
        
        protect cell membrane and LDL from oxidative damage caused by free radicals
    - - Vision
        
        protect eyes from aging damage in macula
      - protect skin from sun damage
      - Immune system
        
        provide anti-inflammory properties
    - - There is no DRI. As a result, there are no concerns with lack of Beta Carotene
      - may have low risk of DNA damage, epithelia cancer and heart disease
    - - There is no DRI. Therefore, no severe symptoms due to overconsumption
      - Hypercarotenemia
        
        a reversible symptom that causes orange skin tone
    - - Plant based food with green and orange colour
        
        yam, carrot, papaya
- - - - carrots, baked yam, papya