認識維他命A及其作用

Vitamin ARetinol, also known as “retinol”, is a fat-soluble nutrient that is essential for maintaining human health. However, it cannot be produced by the body on its own and can only be obtained from food. Vitamin A is beneficial to the body's growth.Immunity EnhancementIt fights disease and also promotes the development of certain organs in the body, especially the eyes. We get vitamin A not only from plant foods such as carrots, pumpkin and breast milk, but also from animal foods such as dairy products (whole milk, yoghurt, cheese), liver and fish oil.

Recently, the World Health Organisation (WHO) suggested that vitamin A deficiency already affects some populations, such as young children, women of childbearing age and pregnant women. Vitamin A deficiency has a number of consequences that affect our health and physical functioning. Today, vitamin A deficiency (VAD) is still the most common cause of vision problems worldwide.The main factor in the development of Vitamin A deficiency. Young children and pregnant women need to eat foods rich in vitamin A to avoid deficiency.

Related reading:Top 5 Children's Vitamin Brands

Benefits of Vitamin A

Vitamin A is used to regulate important biological processes in the body, including:

Maintain good vision, especially in dim lighting;
Maintains healthy skin and mucous membranes in certain parts of the body, such as the nose;
Enhances the immune response to disease;
Promotes bone growth;
Favours the growth and development of the fetus;

Vitamin A-rich foods

Some good food sources of vitamin A are: liver or liver products (such as liver pate), cod liver oil, dairy products such as milk, cheese and yoghurt, and egg yolks.

Note that we also get vitamin A from beta-carotene because the body converts carotenoids (beta-carotene) into retinol (vitamin A) for use by the body. Beta-carotene-rich foods include red, orange, yellow and green leafy vegetables such as carrots, sweet potatoes and peppers, as well as red and orange coloured fruits such as mangoes, tangerines and apricots.

Some foods are also fortified with vitamin A, but we can't rely on them alone to get enough because they contain less of it. These include snack drinks, margarine and pasta.

What are the consequences of Vitamin A deficiency?

Some of the health problems caused by vitamin A deficiency are:

Affects iron absorption
Reduced immune response
Delayed growth
suffer from insomnia

Who is at risk of vitamin A deficiency?

Infants and young children whose mothers are suffering from vitamin A deficiency during breastfeeding;
People with impaired absorption of Vitamin A;
People who do not have access to fortified foods;
Alcoholics;

Can taking too much Vitamin A harm my body?

Foods like liver and liver products are particularly high in vitamin A, so if you consume them more than once a week, you are likely to get too much vitamin A. In addition, many multivitamin supplements contain vitamin A, and other supplements, such as cod liver oil, are also high in vitamin A. Excessive intake of vitamin A can damage the respiratory and skeletal systems, and may even interfere with the body's metabolism of other fat-soluble vitamins. It is recommended to take the recommended dosage of vitamin A to maintain good health.

What is the demand for Vitamin A?

Adults between the ages of 19 and 64 need 700mg per day for men and 600mg per day for women, and if you eat a balanced diet, you should be able to meet your vitamin A needs.

Recommended Vitamin A Supplements

People with vitamin A deficiency can take multivitamins or vitamin A supplements to get enough of what they need. You may want to try one of these quality vitamin A products.

1. Jamieson-Vitamin A 10,000 IU 100 capsules

Packed with good-for-you premium Vitamin A, this product has been formulated with premium ingredients that are reliable, safe and effective for those suffering from Vitamin A deficiency. And it's also made by Jamieson, Canada's top certified brand, which is trusted worldwide for its organic, quality supplements.Taking Jamieson Vitamin A SupplementsIt protects the retina and improves night vision and eye health. It also supports skin growth, cell regeneration, and immune system function in the same way that vitamin A from food does.

2. Blackmores Vitamin 5000

Blackmores is one of Australia's leading natural healthcare companies and their products include vitamins, minerals, herbal remedies, and nutritional supplements.Blackmores products are produced from the finest ingredients from around the world. The brand offers this Vitamin A 5000 to help improve the functioning of eye health and maintain good vision, as well as to help improve night vision. The product comes in easy-to-swallow capsules and has received a lot of positive reviews. Adults are recommended to take 1 capsule daily unless otherwise prescribed by your doctor.

Please note that if you are pregnant or preparing for pregnancy, it is recommended that you do not take any of the following before consulting a physician or pharmacistVitamin A SupplementOverdose of vitamin A can affect your unborn baby. Overdosing on vitamin A can affect your unborn baby, and avoid products high in vitamin A such as liver or liver products.