immunocompromised states, people aged 65 years or older, and people with underlying health conditions. Yet it is still unclear why COVID-19 can also be deadly for people who are not in high-risk groups.Because excess sugar in the blood is linked to type 2 diabetes, a major risk factor for severe COVID-19 and death, a team of researchers in Spain has investigated whether high blood sugar levels alone correlate with COVID-19-related mortality.The results of their study appear in the journal Annals of Medicine.Stay informed with live updates on the current COVID-19 outbreak and visit our coronavirus hub for more advice on prevention and treatment.The researchers used a national registry to analyze data from 11,312 COVID-19 positive patients in.