Vitamin A is essential for many processes in your body. Including maintaining healthy vision, ensuring the normal function of your organs and immune system. And aiding the proper development of babies in the womb.
Vitamin A is the generic term for a group of fat-soluble compounds highly important for human health สมัคร UFABET
It’s recommended that men get 900 mcg, women 700 mcg and children and adolescents 300–600 mcg per day.
Vitamin A compounds are found in both animal and plant foods and come in two different forms: preformed and provitamin A.
Preformed vitamin A is known as the active form of the vitamin. Which your body can use just as it is. It’s found in animal products. Including meat, chicken, fish and dairy and includes the compounds retinol, retinal and retinoic acid.
Provitamin A carotenoids — alpha-carotene, beta-carotene and beta-cryptoxanthin are the inactive form of the vitamin found in plants.
These compounds are converted to the active form in your body. For example, beta-carotene is converted to retinol in your small intestine.
Essential for preserving your eyesight.
The vitamin is needed to convert light that hits your eye into an electrical signal that can be sent to your brain.
In fact, one of the first symptoms deficiency can be night blindness, known as nyctalopia.
Night blindness occurs in people with deficiency, as the vitamin is a major component of the pigment rhodopsin.
Rhodopsin is found in the retina of your eye and extremely sensitive to light.
People with this condition can still see normally during the day. But have reduced vision in darkness as their eyes struggle to pick up light at lower levels.