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    Harm of deficiency and excess of vitamins A, D

    Two types of micronutrients are essential for the body, but if improper supplementation can be dangerous. Excess vitamin A will cause bone and joint pain, deficiency of vitamin D easily leads to rickets.
    Vitamin A is an essential constituent of retinal pigment, making it important for the eyes. In addition, it helps maintain the integrity of the epithelial cells covering the surface and cavities of the body.

    Lack of vitamin A will cause dryness in the conjunctival membrane, cornea, worse will cause corneal perforation and lead to blindness. It also causes keratinized hair follicles, the surface of the skin is usually thorny, which reduces the growth rate and the body’s resistance to disease.

    – Chicken liver: 6,960mcg
    – Carrots: 5,040mcg
    – Pig liver: 6,000mcg
    – Papaya ripe: 2,100mcg
    – Duck eggs: 875mcg
    – Vegetables: 6,650mcg
    – Eel: 1,800mcg
    – Amaranth: 5,300mcg

    Excess vitamin A will cause abdominal pain, nausea, listlessness, slowness, papilledema, and body flaking. Poisoning can occur when taken in excess of 40,000 units daily, causing joint pain, hair loss, chapped lips, anorexia, and enlarged liver. For the first 3 months of pregnancy, using more than 10,000 units of vitamin A per day can cause fetal deformities. Beta carotene – a precursor of the most active vitamin A – can cause jaundice, especially in the palms of the hands and feet. The daily requirement for vitamin A in children is 400mcg and adults is 600mcg.

    Vitamin D

    – Ergocan-xiferol D2, Cholecan-xiferol D3 Amount of vitamin D in some foods
    – Breast milk 2-4 units / 100g (summer) and 0.3-2 units / 100g (winter).
    – Cow milk 4 units
    – Eggs 50-200
    – Egg yolks 300
    – Beef liver 100
    – Pig liver 90
    – Cod liver mackerel 500-1,500.

    Vitamin D helps to regulate the metabolism of calcium and phosphorus in the body, increasing the absorption and assimilation of calcium by 50-80% of the need for the process of metabolism. Vitamin D3 is more active than vitamin D2 at a ratio of 4: 3.

    Lack of vitamin D leads to rickets. For children under 2 years of age, vitamin D deficiency produces atypical disorders such as being easily irritated, sweating, then slowing down teething, softening of the skull, prone to seizures. When children know to stand will be easy to bend the spine, bow legs.

    Excess vitamin D, especially D2, D3 has doses thousands of times higher than standard doses that can cause poisoning. Common symptoms are poor appetite, nausea, frequent urination, large stops, pallor, sometimes causing seizures and shortness of breath.