Locations:
Search IconSearch

Can Vitamin D Prevent COVID-19?

Get the whole story before you rush to the drugstore

Vitamin D capsules backlighted by sunlight

Vitamin D is a dynamo when it comes to health benefits. We need it for healthy bones of course, and it’s necessary for many of our body’s functions. But can it go toe-to-toe with the coronavirus (COVID-19)? The internet seems to think so. But before you start sunbathing and taking milk baths, learn why you should be careful when it comes to this latest development.

Advertisement

Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission. We do not endorse non-Cleveland Clinic products or services. Policy

Why is everyone talking about vitamin D all of a sudden?

If you’ve been paying attention to the headlines lately, you’ve probably seen that vitamin D deficiency has been linked to COVID-19 infections and fatalities. New research has suggested that the rate of infection and deaths appeared to be much higher in areas where people had lower amounts of vitamin D in their systems. This finding was especially significant in Europe.

Researchers discovered that southern European countries like Italy and Spain had more COVID-19-related cases and deaths than northern European countries. How does vitamin D absorption factor in when it comes to these two regions?

People in northern Europe tend to consume more sources of vitamin D, like supplements and cod liver oil. In southern Europe, many people have darker complexions. When you have more melanin or pigmentation in your skin, it’s much harder for the body to convert sunshine into vitamin D. And as we know, sun exposure is one way that we can get it.

Some of the studies floating around right now are still being reviewed, so don’t buy all the vitamin D supplements you can find and please don’t start guzzling cod liver oil. Keep reading to find out why it’s important to weigh all of the evidence and talk to your doctor before doing anything.

Advertisement

“Miracle cure” or too soon to tell?

While the latest findings might seem like an open-and-shut case, it’s not that simple according to family medicine doctor Donald Ford, MD.

“What these recent studies have shown was an association, and not necessarily any kind of causative link. What does that mean? It means these findings could be important or they could be something else entirely,” explains Ford.

While news outlets or people close to you might suggest that you increase your vitamin D intake to protect yourself from COVID-19, Dr. Ford recommends talking to your doctor before making the call since there are still many unknowns.

“Some of the articles out there have drawn the conclusion that it’s safe and effective to take vitamin D to prevent COVID-19. That’s an inappropriate conclusion at this time because all we can say is that in countries where people had lower levels of vitamin D, there were more cases of COVID-19. But this doesn’t take into account the million other factors that could be contributing to that. My caution as a physician is before anyone does anything, they should talk to their doctor. Now, there may be something that’s actually worth exploring with this research. But based on the knowledge that we have at this time, you can’t draw the conclusion that taking vitamin D is going to help prevent COVID-19.”

With all of the coronavirus’ mysteries and uncertainties, we’ve seen people cling to homemade concoctions, dangerous chemicals or anything that appears to offer a glimmer of hope. Dr. Ford believes it’s good to extend caution and not jump on things as soon as they hit our inboxes and newsfeeds. Why? Because the latest media sensation could cause more harm than good.

“With vitamin D, maybe there is some truth to it but we just don’t have enough information right now. Something similar happened recently with a medicine called hydroxychloroquine. An early study showed that there might be some benefits to using it to treat the coronavirus. But when more studies were done, we found out that this drug offered little benefits and could potentially harm people. This is why I always tell patients to not jump to conclusions and let the scientists figure these things out.”

You are not invincible

Many people take vitamin D supplements and doctors may recommend them for certain medical conditions. So what’s the problem? Dr. Ford points out that the danger is in the suggestion that vitamin D can make people immune to COVID-19.

“The biggest harm that I see with something like this is that people will take vitamin D and then think they’re immune to COVID-19. With these studies, that wasn’t even close to being shown. To stay safe, people should still maintain all of the social distancing protocols — wearing masks, washing their hands and everything else that we’ve been doing since this all started.”

Advertisement

Advertisement

Learn more about our editorial process.

Related Articles

Healthcare provider examining person's throat in office, with oversized germs around
November 21, 2024/Infectious Disease
How Laryngitis and COVID-19 Can Impact Your Voice

Infection and inflammation can cause you to lose your voice and have other voice changes until you’re fully healed

Person lying stomach down on bed, head on crossed arms, staring into the distance
Having COVID-19 May Increase Your Risk of Depression

A COVID-19 infection can bring on depression or anxiety months after physical symptoms go away

Person in mask and medical coveralls handling COVID-19 vials with gloved hands
November 14, 2024/Infectious Disease
COVID-19 Variants: What’s New and Why We’re Still Concerned

Just like the flu, COVID-19 continues to evolve every year with new and smarter variants

Scientist/lab tech in lab wearing mask and white coat working, with test tubes on counter
November 11, 2024/Infectious Disease
FLiRT COVID Variants: What To Know

The latest omicron subvariants carry specific mutations that may allow the SARS-CoV-2 virus to be better at evading immune protection

Male sitting on edge of bed with head in hands, distressed, with female sitting in bed, with germs floating around
November 7, 2024/Infectious Disease
Can COVID-19 Cause Erectile Dysfunction?

Research shows the virus can affect your ability to get or maintain an erection

Hand feeling the temperature on the forehead of a toddler sitting on a couch
October 29, 2024/Children's Health
RSV vs. Pneumonia: Sorting out Your Child’s Fever and Cough

RSV can lead your child to develop pneumonia and have trouble breathing

Sources of vitamin D, including foods like fish and dairy, sunshine and supplements
October 25, 2024/Nutrition
What Does Vitamin D Do?

The benefits of vitamin D include stronger bones, a hardier immune system and better overall health

Person on couch, brows furrowed coughing into hand, with other hand on their chest
What Is Respiratory Season, and Are You Ready?

Getting vaccinated in October can help protect you against severe illness between November and March

Trending Topics

Person touching aching ear, with home remedies floating around
Home Remedies for an Ear Infection: What To Try and What To Avoid

Not all ear infections need antibiotics — cold and warm compresses and changing up your sleep position can help

Infographic of foods high in iron, including shrimp, oysters, peas, cream of wheat, prunes, eggs, broccoli, beef and chicken
52 Foods High In Iron

Pump up your iron intake with foods like tuna, tofu and turkey

Person squeezing half a lemon into a glass of water
Is Starting Your Day With Lemon Water Healthy?

A glass of lemon water in the morning can help with digestion and boost vitamin C levels, and may even help get you into a better routine

Ad