A Mediterranean diet, rich in fruits, vegetables, whole grains, nuts, and olive oil, may slightly lower the risk of COVID-19, according to a review study published in PLOS ONE on August 21, 2024. While evidence linking the diet to reduced COVID-19 severity is weak, specific foods like olive oil, nuts, and vegetables might help. Overall, a Mediterranean diet supports immunity, but other healthy habits and practices are also crucial for reducing disease risk.