According to scientists, Vitamin D lowers the risk of contracting COVID-19, which has in turn resulted in the increase in intake of Vitamin D rich foods. Lack of Vitamin D in the body results in higher risks of hypertension as well as cardiovascular diseases, eventually meaning a longer stay in the hospital if infected. The need for oxygen in the body is reduced if the body has adequate Vitamin D.
This is something Everyone needs to know... Makes a huge difference!!
There are also lists upon lists of foods that are very helpful as well: https://youtu.be/2-JmbQ9Dlco
It's almost as if ingesting the things your immune system needs to work optimally will make your immune system work optimally. Weird.