Vitamin A

Vitamin A is an essential nutrient that plays a vital role in maintaining healthy vision, skin, immune system, and reproductive health. It is a fat-soluble vitamin that comes in two forms, retinoids, and carotenoids. Retinoids, which are found in animal products, are synthesized by the body into active forms of vitamin A, while carotenoids, which are found in plant-based foods, are converted into vitamin A by the body. Vitamin A deficiency is prevalent in developing countries, and it can cause severe vision problems, especially in children.

Although vitamin A is crucial for good health, it can be toxic in excess. Therefore, it's important to get the recommended daily intake of vitamin A from food or supplements. The recommended intake of vitamin A varies depending on age, gender, and other factors. However, in general, adults need around 700-900 micrograms of vitamin A per day, while children need around 300-500 micrograms per day. Vitamin A can be found in many foods such as liver, eggs, milk, orange and yellow vegetables, and fruits. If you're unable to meet your daily vitamin A needs through your diet, you can take supplements, but it's essential to follow the recommended dosage to avoid toxicity.