Israel scientists say they have gathered the most convincing evidence to date that increased vitamin D levels can help COVID-19 patients reduce the risk of serious illness or death.Researchers from Bar Ilan University and the Galilee Medical Center say that the vitamin has such a strong impact on disease severity that they can predict how people would fare if infected based on nothing more than their ages and vitamin D levels.Lacking vitamin D significantly increases danger levels, they concluded in newly peer-reviewed research published Thursday in the journal PLOS One.The study is based on research conducted during Israel’s first two...