Vitamin and mineral guide

Benefits of Vitamin A: Vision, Immunity, Skin and Food Sources

Vitamins & MineralsUpdated 2026-05-099 min read

Vitamin A supports normal vision, immune function and healthy skin, with food sources including eggs, dairy, oily fish and colourful vegetables.

Quick answer: Vitamin A helps support vision in dim light, normal immune function and healthy skin. Most people can get enough from food, but high intake from supplements or liver can be harmful, especially during pregnancy.
Health note: This article is educational and is not medical advice. Speak with a GP, pharmacist or registered dietitian before using supplements to treat symptoms, changing medication, or taking high dose products.

What Vitamin A does

Vitamin A is an essential nutrient, meaning your body needs it in small amounts to work properly. The practical benefit is not that it gives you superpowers. It helps normal processes run as intended, which is less dramatic but much more useful.

Main benefits of getting enough Vitamin A

  • Supports vision in dim light
  • Helps the immune system work normally
  • Supports healthy skin and body linings
  • Can be obtained as retinol from animal foods or beta-carotene from colourful plants

Foods that contain Vitamin A

For most people, the best starting point is a varied diet rather than reaching straight for tablets. Useful food sources include:

  • Eggs
  • Milk, yoghurt and cheese
  • Oily fish such as salmon, sardines, trout, herring and mackerel
  • Fortified spreads
  • Carrots, sweet potatoes, spinach and red peppers
  • Mango, papaya and apricots

Simple meal idea

Try eggs with spinach, a side of roasted sweet potato, or yoghurt with mango. That gives a mix of retinol sources and beta-carotene rich plant foods without needing to raid the supplement cupboard.

Food first vs supplements

Supplements can be useful in specific situations, but they are not automatically better than food. Food also brings protein, fibre, fats, carbohydrates and other micronutrients that work together. A supplement is a tool, not a cheat code.

Consider a supplement if you have been advised to do so, have a restricted diet, have a confirmed deficiency, or fall into a group with higher needs. For symptoms such as ongoing tiredness, weakness, unusual bleeding, tingling, dizziness or unexplained changes, get proper medical advice rather than guessing.

Who may need to pay closer attention?

  • People with restricted diets, including vegan or very limited diets.
  • People who are pregnant, planning pregnancy or breastfeeding.
  • Older adults or people with reduced appetite.
  • People with digestive conditions, absorption issues or relevant medication use.
  • Anyone with symptoms that could suggest deficiency.

When to be cautious

Liver and liver products are very high in vitamin A. Pregnant people should avoid liver, and anyone using retinol or fish liver oil supplements should check total intake carefully.

Related nutrient guides

Nutrition is connected. For example, vitamin D and calcium are often discussed together, while vitamin C can help with iron absorption from plant foods.

Sources and further reading

FAQs

What foods are highest in vitamin A?

Liver is very high in vitamin A, but it is not suitable for everyone. Everyday sources include eggs, dairy, oily fish, fortified spreads and orange or dark green vegetables.

Is beta-carotene the same as vitamin A?

Beta-carotene is converted by the body into vitamin A. It is found in foods such as carrots, sweet potatoes, spinach and mango.

Can too much vitamin A be harmful?

Yes. High vitamin A intake from supplements or liver can be harmful, so avoid doubling up without professional advice.