Therapeutic fasting is defined as the controlled and voluntary abstinence from all calorie-containing food and drinks for a specified period.  

Fasting itself has been practiced for thousands of years and even referenced throughout the Bible, for spiritual insights and overall health. Ramaḍān, in Islam being the ninth month of the Muslim calendar and the holy month of fasting. (Journal of Insulin Resistance 2017)

Antibiotics generally refer to pharmaceutical antimicrobials that are originally designed to fight and kill disease-causing bacteria. Unfortunately, synthetic antibiotics can kill both the good and bad bacteria present in the body. In turn, the living microflora that helps strengthen the immune system can become depleted.