Intermittent fasting has been instructed in the Bible as an implied part of daily living. This paper has reviewed the physical benefits of intermittent fasting. In healthy test subjects, it has led to higher levels of autophagy, gut health, and lifespan. In non-healthy test subjects, it has proven beneficial in cancer treatment, as well as in protection against and/or attenuation of the effects of neurodegeneration, metabolic disorders, and cardiovascular diseases. The possible mechanisms underlying these benefits have been discussed in this review
