Since COVID-19 arrived in our lives, there’s been a lot of chatter about whether we should be taking supplementary vitamin D to help prevent or even treat it.

The vitamin – also referred to as the sunshine vitamin because our bodies make it when we’re exposed to the light – is especially important in autumn and winter when people tend to spend less time outdoors.

During the winter months, many are advised to take vitamin D supplements to keep bones and muscles healthy and to support general health. But in the context of COVID-19, can it be of additional help? Health experts are cautious to make a clear link.

In June 2020, Paul Chrisp, director of the Centre for Guidelines at the National Institute for Health and Care Excellence in the UK, said: “While there are health benefits associated with vitamin D, our rapid evidence summary did not identify sufficient evidence to support the use of vitamin D supplements for the treatment or prevention of COVID-19.”

This was after close analysis of five studies into coronavirus and vitamin D. “We know that the research on this subject is ongoing, and Nice is continuing to monitor new published evidence,” Chrisp added.

An observational study by the UK’s Covid Symptom Study app suggests taking vitamin D supplements could play a small role in reducing the risk of COVID-19 in women, but not men. But further clinical trials were needed, researchers said.

Early on in the pandemic, 1.4 million app users entered data to the COVID Symptom Study app about their use of supplements. Among this group, more than 445,000 went on to be diagnosed with COVID-19, while 126,000 were thought to have the disease based on their symptoms.

After analyzing the data of those who had, and had not had COVID-19, the researchers concluded that multivitamins, vitamin D, omega-3, and probiotic supplements all had a very small but statistically significant protective effect. Vitamin C, zinc or garlic supplements had no detectable effect, they added.

Other scientists said the findings should be treated with caution. Naveed Sattar, professor of metabolic medicine at the University of Glasgow, said: “These are interesting results but, due to the way the study has been conducted, these data absolutely cannot tell us that taking such supplements ‘protects’ against infection from COVID-19.”

So, the jury’s still out on vitamin D’s effect when it comes to COVID-19. But when it comes to boosting your general health, it’s a no-brainer – it keeps bones, teeth and muscles healthy. And a lack of it can lead to bone deformities and pain.

Here are seven ways to get that sunshine vitamin into your life all year round.

1. Supplements

This is the easiest option and one many will be doing already. It’s important to check with your doctor before taking any supplement to assess your specific needs. Most experts will recommend 10 micrograms (400 IU) of vitamin D a day between October and early March to keep your bones and muscles healthy. People with dark skin are urged to take them all year round.

Do not take more than 100 micrograms of vitamin D a day, as it could be harmful. Taking too many supplements over a prolonged period can cause a build up of calcium in the body, known as hypercalcaemia, which can weaken the bones and damage the kidneys and heart.


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