How old is easy to lack vitamin A?

summary

Around a lot of mothers follow the trend to eat cod liver oil for the baby, sometimes follow the trend also need to understand, but cod liver oil is a good supplement for the baby feeding! Vitamin A deficiency is a systemic disease caused by vitamin A deficiency in the body, which is mainly caused by eye and skin lesions. It is more common in children aged 1-4 years. Who recognized vitamin A deficiency as one of the four major nutritional deficiency diseases in the world. Recent data estimate that vitamin A deficiency can cause 1-2 million deaths every year in the world, 500000 children are blind due to vitamin A deficiency, and xerophthalmia due to vitamin A deficiency is as high as more than 10 million.

How old is easy to lack vitamin A?

The early symptoms of vitamin A deficiency are poor dark adaptation, dry conjunctiva and cornea. Later, it develops into keratomalacia with dry skin and keratosis of hair follicles. Therefore, it is also called night blindness, xerophthalmia and keratomalacia. Eye: at first, the time of dark adaptation was prolonged, then the vision decreased under dark light, and the vision was not clear at dusk, and then developed into night blindness; Dry eye discomfort, often blinking, due to the lacrimal gland tube is exfoliated epithelial cells blocked, reduce the tears, and then conjunctiva and cornea lose luster and elasticity, when the eyes turn to the sides, the conjunctiva can be folded to form a concentric wrinkle circle with the cornea. Cornea is dry, turbid and softened, and then ulcers are formed, which is easy to secondary infection. After healing, leukoplakia can be left, affecting vision; Severe cases may have corneal perforation, iris prolapse and blindness.

Skin: most of the skin symptoms are seen in older children. At the beginning, they are dry and desquamated, and then they become keratinized and proliferated. The keratinized substance fills the hair follicles and protrudes out of the skin. It looks like "chicken skin" and feels rough when touching it; Skin lesions were first seen in the upper and lower extremity joints, and then other parts were involved. The hair was dry and easy to fall off, and the fingernails were brittle, thin, textured and easy to break.

If the lack of vitamin A is determined, you can take some reagents containing vitamin A for supplement, because in the world of vitamin A, the speed of vitamin a supplement is relatively fast. The effect is also more obvious, in peacetime can also be used to supplement a variety of vitamins.

matters needing attention

Animal liver, milk and dairy products and eggs, green leafy vegetables, yellow vegetables and fruits. Carrot, tomato, persimmon, egg, beef liver and pig liver, cod liver oil, milk, cheese, butter, broccoli, spinach, lettuce, soybean, green pea, orange, apricot, sweet potato and apricot can all supplement vitamin A. In addition, eat more cod liver oil can supplement vitamin A.