Fasting is the willing abstinence or reduction from some or all food, drink, or both, for a period of time. Although sometimes viewed as unhealthy, depriving, or reserved for religious reasons, short-term fasting can offer excellent health benefits. As research grows in this area of health, fasting is becoming more widely accepted as a legitimate means of managing weight and preventing disease. At the same time, it is important that fasting is done in proper and healthy ways.