In combo with other observational studies correlating Vitamin-D-deficiencies with the worst Covid-19 outcomes, the case is growing. Vitamin-D in moderate amoun

In combo with other observational studies correlating Vitamin-D-deficiencies with the worst Covid-19 outcomes, the case is growing. Vitamin-D in moderate amounts is pretty safe, so for those not already getting adequate sun exposure, it's a low-risk, high-potential-reward supplement.