Why is Vitamin A Named Retinol?

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Ever wonder why vitamin A is named retinol? Could it have something to do with the retina? Find out. 

Timestamps
0:00 Why is vitamin A named retinol?
0:20 What is the retina?
1:10 Vitamin A functions 
1:32 Sources of vitamin A

Vitamin A Sources:
   • Vitamin A: Sources, Functions, and Deficie...  
   • You Don't Get Vitamin A From Vegetables  

Retinol
https://pubmed.ncbi.nlm.nih.gov/9526674/

Today I want to explain why vitamin A is named retinol. Vitamin A has everything to do with supporting the retina. The retina is an extension of the central nervous system that is sticking out of your skull deep in your eye. It has certain receptors that are sensitive to light, allowing you to see. 

Vitamin A helps form photosensitive pigment in the retina called visual purple or rhodopsin. This pigment converts light into electrical signals. One of the first symptoms of a vitamin A deficiency is the loss of night vision. Vitamin A (retinol) helps you see in the dark. 

Vitamin A is also needed to help:
• Decrease the risk of infection 
• Support healthy mucous membranes 
• Prevent dry eyes 
• Decrease the symptoms and complications of measles

You can’t get your required vitamin A from vegetables. Vegetables provide the precursor to vitamin A, which has to be converted. But, it’s only converted in a very small amount. The best source of the active form of vitamin A (retinol) is cod liver oil. Cod liver oil also has vitamin D and omega-3 fatty acids (DHA and EPA). You may want to avoid taking the synthetic version of vitamin A (retinyl palmitate), which can have complications. 

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Dr. Berg, age 58, is a chiropractor who specializes in Healthy Ketosis & Intermittent Fasting. He is the author of the best-selling book The Healthy Keto Plan, and is the Director of Dr. Berg Nutritionals. He no longer practices, but focuses on health education through social media.

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Dr. Eric Berg received his Doctor of Chiropractic degree from Palmer College of Chiropractic in 1988. His use of “doctor” or “Dr.” in relation to himself solely refers to that degree. Dr. Berg is a licensed chiropractor in Virginia, California, and Louisiana, but he no longer practices chiropractic in any state and does not see patients so he can focus on educating people as a full time activity, yet he maintains an active license. This video is for general informational purposes only. It should not be used to self-diagnose and it is not a substitute for a medical exam, cure, treatment, diagnosis, and prescription or recommendation. It does not create a doctor-patient relationship between Dr. Berg and you. You should not make any change in your health regimen or diet before first consulting a physician and obtaining a medical exam, diagnosis, and recommendation. Always seek the advice of a physician or other qualified health provider with any questions you may have regarding a medical condition.

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Thanks for watching! I hope this helps you better understand why vitamin A is named retinol.