High level of apoptosis due to stress on the body (lifestyle, food, chemicals, etc.) produces too much toxins in the body - creates cytokine storm or inflammation, histamine response among other hormones - in turn effects the function of organs, etc. (my theory based on science (advanced biochem, advanced biology, organic chem 1, 2, 3, etc.) . This explanation of virus being dead debris makes more sense than what the science textbooks say).