Retinoids: Found in animal products
Carotenoids: Found in plants.
Beta-carotene: A type of carotenoid, a precursor to vitamin A found in colorful fruits and vegetables like carrots, sweet potatoes, and spinach. Once consumed, the body converts beta-carotene into vitamin A as needed. It acts as an antioxidant, protecting cells from damage caused by free radicals.
Retinyl palmitate: A pre-formed version of vitamin A commonly found in animal products and supplements. It's already in the active form of retinol, making it readily available for the body to use. Retinyl palmitate is often used in skincare products for its potential to improve skin texture and appearance.
Benefits
- Maintaining healthy vision
- Supporting immune function
- Aiding in proper cell growth and development
- Promoting skin health
Precautions
- Excessive intake can lead to toxicity, causing symptoms like nausea, dizziness, and liver damage. Pregnant women should be cautious, as high doses can harm the fetus.
Fun fact
Vitamin A plays a crucial role in the development and maintenance of epithelial tissues, which are the outer layers of skin and the linings of internal organs and blood vessels. This vitamin helps maintain the integrity of mucous membranes throughout the body.
References
- NIH Office of Dietary Supplements (2023, December 15). Vitamin A: Fact sheet for health professionals. U.S. Department of Health and Human Services https://ods.od.nih.gov/factsheets/VitaminA-HealthProfessional/