I like vitamin D since we have a clear mechanism-of-action specifically for COVID19: - We adapt skin color based on latitude to maintain vitamin D levels and p

I like vitamin D since we have a clear mechanism-of-action specifically for COVID19: - We adapt skin color based on latitude to maintain vitamin D levels and prevent sunburns at different levels of sun exposure. - At this point, we have incredible strong correlations between vitamin D and COVID19 outcomes.