Vitamins C and D — do we need to supplement these?

Here’s the view that we don’t

Tom Kane
Plainly Put
3 min readJan 19, 2024

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Vitamin pills C and D graffiti art
Image by Author

Hey everyone! So, you’ve probably heard the hype about vitamin C and D supplements being the superheroes for your immune system, especially during the dreaded cold and flu season.

Dr. Michael Ben-Aderet, a noted infectious disease specialist, wants to share some real talk about these supplements.

If you’re already munching on a decent, healthy diet, popping those vitamin pills might not be the magic solution. Dr. Ben-Aderet points out that there’s no solid proof that supplements do wonders for folks with a regular, healthy diet. Sure, some people have serious vitamin deficiencies, but for the everyday warrior, it’s not a guaranteed game-changer.

But don’t throw away those vitamins just yet! Vitamin C and D are like the unsung heroes that can help your immune system function better.

Dr. John Mafi, the wise associate professor, spills the beans — vitamin C boosts B-lymphocytes and stops T-cells from going downhill, both essential for fighting off those pesky viruses and bacteria. Meanwhile, vitamin D creates an antimicrobial peptide that’s a real ninja against bacteria, microbes, and viruses.

Now, let’s not forget the classics — the tried-and-true immuno-boosters that don’t come in a pill bottle:
1. Eating a healthy, balanced diet: Yup, fruits, veggies, the whole shebang.
2. Exercising: Get those limbs moving, folks!
3. Prioritizing sleep: Beauty sleep is a real thing, and it’s not just for your looks.
4. Practicing good hand hygiene: Suds up those hands and keep those germs at bay.
5. Getting vaccinated: A little shot can go a long way in the battle against respiratory viruses.

But if you’re still curious about those supplements, Dr. Ben-Aderet says, “The jury’s still mostly out,” and they’re usually cheap and harmless. However, Dr. Mafi adds a friendly reminder — before you embark on a supplement journey, have a chat with your trusty doctor, it’s better safe than sorry!

Oh, and a quick heads-up if you’re into vitamin C supplements — don’t go overboard.

Stay under 2,000 milligrams a day to avoid stomach troubles and kidney stones. Dr. Mafi says it’s always better to snag your vitamins from the natural sources — think citrus fruits, greens like kale, and not just from a pill bottle.

And for our vitamin D enthusiasts, a daily dose of 600 to 800 international units (IUs) should do the trick. Don’t OD on it, though; too much can lead to calcium overload.

So, whether you’re team vitamin C, team vitamin D, or team natural sources, here’s to a healthy, happy immune system!

References:
https://doi.org/10.1002/14651858.CD000980.pub4
Carpenter KJ. The history of scurvy and vitamin C. Cambridge: Cambridge University Press, 1986.
1. Institute of Medicine (US) Panel on Dietary Antioxidants and Related Compounds. Dietary Reference Intakes for Vitamin C, Vitamin E, Selenium, and Carotenoids. Washington (DC): National Academies Press (US); 2000.
2. Poljšak B, Ionescu JG. Pro-oxidant vs. antioxidant effects of vitamin C. Handbook of Vitamin C Research: Daily Requirements, Dietary Sources and Adverse Effects (pp.153–183). January 2009. Nova Science Publishers, Inc.
3. Huang G, Wu L, Qiu L, Lai J, Huang Z, Liao L. Association between vegetables consumption and the risk of age-related cataract: a meta-analysis. Int J Clin Exp Med. 2015 Oct 15;8(10):18455–61.
4. Douglas RM, Hemila H, Chalker E, Treacy B. Vitamin C for preventing and treating the common cold. Cochrane Database Syst Rev. 2007:CD000980.
5. Juraschek SP, Gaziano JM, Glynn RJ, Gomelskaya N, Bubes VY, Buring JE, Shmerling RH, Sesso HD. Effects of vitamin C supplementation on gout risk: results from the Physicians’ Health Study II trial. The American Journal of Clinical Nutrition. 2022 Sep;116(3):812–9.
6. Pullar JM, Carr AC, Vissers MC. The roles of vitamin C in skin health. Nutrients. 2017 Aug 12;9(8):866.

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Tom Kane
Plainly Put

Retired Biochemist, Premium Ghostwriter, Top Medium Writer,Editor of Plainly Put and Poetry Genius publications on Medium