There are news items suggestive of increase in the life span of laboratory animals from prolonged use of very low calorie diet. Some human research has shown that VLCD of about 800 Calories/day can reduce the amount of insulin in blood and general body temperature ??“ two markers of long life. All religions of the world and societies have some dietary restriction and fasting as morally beneficial. I sometimes wonder if the wise prophets had noticed this beneficial effect of reduced intake and incorporated it in their preaching.