Self-reporting and small samplesFirst, it’s important to underline that reported diet type didn’t influence the initial risk of contracting COVID-19.The study isn’t suggesting that diet changes the risk of getting infected.
Nor did it find links between diet type and length of illness. Rather, the study only suggests that there’s a link between diet and the specific risk of developing moderate-to-severe COVID-19 symptoms.It’s also important to consider the actual number of people involved.
Just under 3,000 health professionals took part, spread across six western countries, and only 138 developed moderate-to-severe disease.