Essential sufficiency of zinc, ω-3 polyunsaturated fatty acids, vitamin D and magnesium for prevention and treatment of COVID-19, diabetes, cardiovascular diseases, lung diseases and cancer

This narrative review emphasizes the critical role of maintaining sufficient levels of zinc, omega-3 polyunsaturated fatty acids (PUFAs), vitamin D, and magnesium in preventing and managing chronic diseases such as COVID-19, diabetes, cardiovascular diseases, lung diseases, and cancer. The author discusses how deficiencies in these nutrients can impair immune function,