Evidence-based nutrition, in plain English — every entry sourced from clinical research.

Vitamin A is a fat-soluble vitamin best known for protecting your sight, particularly the ability to see in dim light. It comes ready-made as retinol in liver, oily fish, eggs and dairy, and is also made by the body from the orange and green pigments in carrots, sweet potatoes and spinach. Beyond vision, it is a guardian of the surfaces that meet the outside world, keeping skin and the linings of the gut and airways intact and helping immune cells mount a proper defence. Because it is stored in the liver, food sources are the safest route.

What is Vitamin A?

Vitamin A is a fat-soluble vitamin that plays a critical role in maintaining healthy vision, supporting the immune system and keeping skin and mucosal surfaces intact. While many general diets overlook it, maintaining optimal levels of Vitamin A is frequently tracked by people working to optimize their Immune & skin health.

Top Foods High in Vitamin A

A data-driven breakdown of the foods with the highest concentration of Vitamin A per 100 g.

Highest dietary sources of Vitamin A, per 100 g edible portion
FoodVitamin A% DV
Carrot835 µg92.8%
Spinach469 µg52.1%
Cheddar Cheese263 µg29.2%
Kale241 µg26.8%
Parmesan207 µg23%
Sweet Potato189 µg21%
Mozzarella179 µg19.9%
Kefir171 µg19%
Eggs160 µg17.8%
Rainbow Trout84 µg9.3%
Cottage Cheese68 µg7.6%
Skim Milk61 µg6.8%
Mackerel50 µg5.6%
Chilli Pepper48 µg5.3%
Mussels48 µg5.3%
Whole Milk46 µg5.1%

How Vitamin A Impacts Immune & skin health

Research links diets rich in Vitamin A to changes in Immune & skin health. Optimizing intake of these foods can support healthy Immune & skin health levels via regulating the genes that mature immune cells and renew the epithelial barrier of the skin and mucous membranes.

Encyclopedia Insight: For maximum absorption, pair Vitamin A-rich foods with a little dietary fat such as olive oil or avocado, which the body needs to absorb this fat-soluble vitamin and its carotenoid precursors to optimize bioavailability.

Written by the Nutrition Encyclopedia team · medically reviewed by Dr. Sunaina Tariq, MBBS

Last updated 22 June 2026

Nutrition values are approximations compiled from public food-composition databases (USDA FoodData Central) and are provided for educational purposes only — not medical advice.

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