How can one respond to a communist professor who claims that God commands abandoning food and drink during the day, and that this is harmful to health?

Fasting is a divine act of worship with numerous health benefits. It contributes to the treatment of psychological disorders, strengthens willpower, and improves emotions. It also treats many physical ailments such as digestive system diseases, obesity, arteriosclerosis, high blood pressure, and asthma. Some scholars have even considered it to be rejuvenating. Fasting reduces the strain on the heart muscle and is beneficial in treating skin diseases by reducing the water content in the blood and increasing skin immunity. The optimal benefits are achieved by adhering to the etiquette of fasting. Many Western books have been written about the medical benefits of fasting.