VITAMIN A

Vitamin A, also known as retinol, has been the subject of various studies highlighting its potential benefits in different areas. Adequate vitamin A intake has been associated with the ability to slow age-related blindness, as stated in a 2015 study. Another research in the same year suggested that sufficient vitamin A, particularly from plant sources, contributes to healthy cell division and may reduce the risk of cancer.

A study found that vitamin A deficiency can hinder sperm development, leading to male infertility. In terms of skin rejuvenation, a comparison between retinol and retinoic acid showed that retinol exhibited favourable cellular and atomic properties in the skin, demonstrating good anti-aging results.

Regarding sunlight exposure, another study revealed that ultraviolet radiation decreases both retinol and retinol ester levels in the skin. However, it was found that these two forms of vitamin A are not highly sensitive to solar rays, with retinol showing greater resistance and acting as an antioxidant.

Vitamins or minerals that enhance the absorption of vitamin A include:

• Vitamin D: Vitamin D plays a crucial role in calcium metabolism and bone health, but it also aids in the absorption of fat-soluble vitamins, including vitamin A. Vitamin D helps the intestines absorb vitamin A more efficiently.

• Vitamin K: Vitamin K is another fat-soluble vitamin that can contribute to the absorption of vitamin A. It is involved in various metabolic processes, including those related to vitamin A utilisation.

• Zinc: Zinc is a mineral that plays a role in the absorption of several nutrients, including vitamin A. Adequate zinc levels in the body can support the efficient uptake of vitamin A.

• Fat: Vitamin A is a fat-soluble vitamin, which means it is absorbed more effectively in the presence of dietary fats. Consuming vitamin A-rich foods with some healthy fats can enhance absorption.

• Protein: Adequate dietary protein can also support the absorption of vitamin A. Protein helps transport vitamin A in the bloodstream and ensures its availability for various bodily functions.

• Iron: While iron itself does not directly enhance vitamin A absorption, it is essential for overall health, and deficiencies in iron can negatively affect nutrient metabolism. Maintaining adequate iron levels can indirectly support vitamin A utilisation.