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Dr. Michael Holick, an expert on vitamin D research from Boston University who has published more than 500 papers and 18 books on the subject, told CNN last month the vitamin regulates the production of a protein that "selectively kills infectious agents, including bacteria and viruses."
Dr. Alison Tedstone, chief nutritionist at Public Health England, told CNN that people may not be getting enough vitamin D during lockdown.
"To protect their bone and muscle health, they should consider taking a daily supplement containing 10 micrograms of vitamin D," she said in an emailed statement to CNN.
» Nutrients from food, not supplements, will help you live longer, study says
If you are unable to go outside these days, don’t fret. Vitamin D can be found in a few foods naturally, and in others through fortification:
- egg yolk
- milk (fortified)
- cereal (fortified)
- yogurt (fortified)
- orange juice (fortified)
You'll probably still need to take a supplement, however, healthline.com reports.
The symptoms of a vitamin D deficiency in adults, according to healthline.com, include:
- tiredness, aches and pains, and a general sense of not feeling well
- severe bone or muscle pain or weakness that may cause difficulty climbing stairs or getting up from the floor or a low chair, or cause you to walk with a waddling gait
- stress fractures, especially in your legs, pelvis and hips