Most of us just are not getting enough vitamin D. It has so many benefits that most people do not even know about. Not only that, but there is also recent evidence that the severity of Covid-19 symptoms bears a strong relationship to the vitamin D concentration in your blood. The Swedish doctor’s magazine has reviewed the correlation between vitamin D deficiency and Coronavirus symptoms and has found a strong correlation between severe complications and vitamin D deficiency (<50 nmol/L)
Vitamin D is also really important for your energy levels which not a lot of people know. Many with symptoms of chronic fatigue that may have been going on for months or years can improve in as little as a few days with proper vitamin D supplementation.
Prevalence of low vitamin D was 77.2% in patients who presented with fatigue. After normalization of vitamin D levels fatigue symptom scores improved significantly (P < 0.001) in all five subscale categories of fatigue assessment questionnaires.Satyajeet Roy, Anthony Sherman, Mary Joan Monari-Sparks, Olga Schweiker, and Krystal Hunter – Correction of Low Vitamin D Improves Fatigue: Effect of Correction of Low Vitamin D in Fatigue Study (EViDiF Study)
Almost half of Americans are deficient in vitamin D because we spend so much time inside and we are not getting exposed to enough sunlight. Sunlight also has its downsides as its UV rays are damaging to our skin. Fortunately, you can just as well take a vitamin D supplement to get your levels up.
There is also strong meta-analysis evidence that low levels of vitamin D can lead to incidents of depression. In fact, people with low levels of vitamin D are more than twice as likely as people with high levels of vitamin D of becoming depressed.
I recommend taking 5,000 IU per day to make sure your levels are sufficient.