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New Study Examines the Importance of Vitamin C on Eye and Brain Health

Last updated: August-29,2022

New Study Examines the Importance of Vitamin C on Eye and Brain Health

Importance of Vitamin C

Many of us are already aware of the importance of Vitamin C as it relates to promoting immune health. However, a new study reveals that a regular intake of this best-selling vitamin may provide specific brain and eye health benefits.

This surprising discovery was made by the researchers of the Oregon Health & Science University. Their findings revealed that retinal cells required high concentrations of Vitamin C for proper functioning. This study, published in the Journal of NeuroScience also found that Vitamin C may promote brain health since the retina is part of the central nervous system. 1

Vitamin C For Eye Health

Although the function of Vitamin C is not fully understood, we do know that Vitamin C reservoirs are the last to be depleted in times of food deprivation. These observations suggest that Vitamin C may have neuro-protective properties and may be useful in supporting several body systems, including those which are dependent on the proper functioning of nerve cells in the retina and brain.

Vitamin C For Brain Function

Triggered by Vitamin C, GABA-type receptors act as an inhibitory brake on excitatory neurons in the brain, thus modulating communication between brain cells. In the absence of Vitamin C, these special receptors no longer function properly. This would explain why feeling blue is one of the most common symptoms of scurvy, a disease caused by Vitamin C deficiency.

Functions of Vitamin C

Although Vitamin C deficiency leading to scurvy is very rare these days, inadequate levels of Vitamin C could cause inefficiencies in other important functions of the body.

Vitamin C, also known as ascorbic acid, is a water-soluble vitamin that the body uses to produce a protein called collagen. It is used to form connective tissues such as skin, blood vessels and tendons. As an antioxidant, Vitamin C helps protect the body against cellular damage.

The importance of Vitamin C is seen in the benefits it provides:

Immune support - Studies show that Vitamin C supplementation in beneficial amounts may help support a healthy immune system. The result of three meta-analyses show that Vitamin C in the amounts of 200 mg to 2 grams per day helps support a healthy immune system and respiratory health. 2-5

Vitamin C facilitates the dietary absorption of iron - Iron deficiency anemia is the most common nutritional deficiency in the world. One of the therapies is increasing dietary intake of Vitamin C. This is because gastrointestinal absorption of elemental iron is enhanced through supplementation of Vitamin C. 6-9

Vitamin C is vital to skin health because it stimulates the production of collagen, which aids in supporting healthy skin and the regeneration process. 10

Vitamin C promotes cardiovascular health - Vitamin C plays a crucial role in stimulating the production of collagen and may help support a healthy cardiovascular system.

Vitamin C helps to promote healthy cell production - Because of the powerful antioxidants it contains, Vitamin C is used for skin health. 11

Who's Potentially At Risk of Having Inadequate Vitamin C Levels?

Smokers - Studies consistently show that smokers are at risk of having low levels of Vitamin C due to oxidative stress caused by inhaling nicotine. The Institute of Medicine recommends that smokers take in 35 mg more of Vitamin C per day than non-smokers. 12-13

Those who follow an unhealthy diet - A diet rich in fruits and vegetables will enable individuals to meet the recommended daily intake (RDI) of Vitamin C. Eating fruit two or more times a day and vegetables, three or more times a day is generally recommended for a healthy diet. However, the percentage of Americans actually following this type of diet ranges from 8.8 percent to 20.1 percent. The rest of the nation, ranging from 79.9 to 91.2 percent, needs supplementary Vitamin C. 14-15

Interested In Manufacturing Your Own Line of Vitamin C Supplements?

With nearly a decade of experience, the team at NutraScience Labs can help a business owner like you manufacture their own Vitamin C products that can help support eye, immune or cardiovascular health.

All of our products are manufactured in a state-of-the-art, GMP certified facilities, so you can rest assured that the finished product you receive from us meets the cGMP guidelines mandated by the FDA. We also offer in-house label and packaging design, and order fulfillment services, which saves you money and reduces the amount of time you spend waiting for your product to be completed.

For more information about our services, please call (855) 492-7388 to speak to one of our Production Specialists or you may submit a request to receive a free quote from us in 48 hours or less.


1. The Journal of Neuroscience, Volume 31, Issue 26, Pages 9672-9682, doi:10.1523/JNEUROSCI.5157-10.2011.

2. http://www.ncbi.nlm.nih.gov/pubmed/10796569

3. Am. J. Med. 78 (6B): 32-7. doi:10.1016/0002-9343(85)90361-4. PMID 4014285.

4. PLoS Medicine 2 (6): e168. doi:10.1371/journal.pmed.0020168. PMC 1160577. PMID 15971944.

5. J Manipulative Physiol Ther. 1999 Oct;22(8):530-3. PMID: 10543583. NCBI Website

6. http://www.annualreviews.org/doi/abs/10.1146/annurev.nu.01.070181.001011

7. Toxicol Lett 1990, 51:189-190.

8. Hum Nutr Appl Nutr. 1986;40:97-113.

9. http://www.aafp.org/afp/2007/0301/p671.html#afp20070301p671-b36

10. http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0003056/

11. http://archive.ahrq.gov/clinic/epcsums/aoxcansum.htm

12. Washington, DC: National Academy Press, 2000.

13. http://www.cdc.gov/tobacco/data_statistics/fact_sheets/adult_data/cig_smoking/index.htm

14. Washington, DC: National Academy Press, 2000.

15. Center for Disease Control and Prevention.

August 25th, 2011

About the Author:

Andrew Goldman

Andrew Goldman is the Vice President of Marketing for NutraScience Labs. In this role, he leverages his 15+ years of B2B inbound marketing experience to develop cutting edge strategies for our firm. A health and fitness enthusiast, Andrew and his team won the 2012 Stevie Award for Marketing Team of the Year. He is also a two-time Best In Biz Silver Award winner for Marketing Executive of the Year and has received other honors and accolades for his website design work.