Vitamin A

What is Vitamin A?

Vitamin A is a fat-soluble vitamin that plays an essential role in normal growth, vision, immune function, and cellular differentiation. Vitamin A exists in two primary forms in the diet. One form is preformed vitamin A, known as retinoids, which are obtained through animal sources such as eggs, fish and dairy. The second form is provitamin A carotenoids, most notably beta-carotene, that are converted by the body into active vitamin A as required and are consumed through plant foods including carrots, spinach and sweet potatoes.

Health Benefits:

Boosts Immune Function

Vitamin A can provide powerful support for immune system function, meaning that it can help protect the body from pathogens and contribute to the maintenance of long term good health. Potential mechanism's of vitamin A's immune boosting effects include regulating the differentiation and function of immune cells, and supporting the development of epithelial and mucous tissues which are key to preventing the invasion of pathogens into the body. Alongside this, vitamin A deficiency has been linked to defects in both T cell-mediated and antibody-dependent immune responses in mice, clearly evidencing an association between this vitamin and immune function.

Supports Eye Health

Vitamin A is a key component of photopigment essential for normal vision function due to its involvement in the process of turning photons of light into electrical signals. There are also several negative effects on eye health linked to vitamin A deficiency including reduced night vision and the development of xeropthalmia, a condition involving severely dry eyes.

Contributes to Skin Health

Research indicates that vitamin A can enhance skin health and appearance. Retinal (a form of vitamin A) is vital for UV-induced melanin synthesis which helps to protect skin cells from damaging ultraviolet radiation linked to skin aging, wrinkles and increased risk of developing skin cancers. Vitamin A also regulates cell growth and differentiation, contributing to tissue repair, and further supporting healthy skin.

Typical Use

Vitamin A is commonly consumed through a healthy balanced diet containing both animal and plant sources, however many choose to supplement this vitamin in order to meet recommended intake due to its vital role in human health. In supplements vitamin A is often incorporated into multivitamin formulations to provide comprehensive support.

Retinoids are widely used in dermatology and skin care products to smooth skin texture, reduce blemishes and minimise wrinkles and fine lines.