The discussion about missing meals in the comments for Can I Improve on the No S Diet? reminded me of this - an extract from the old Roman Breviary for yesterday's feast of St Nicholas (the original Santa Claus):

The holiness of his life was marked even from the cradle. When he was at the breast he never would suck more than once on Wednesdays and Fridays, and that always after sunset, though he sucked freely on other days. This custom of fasting he never broke during his whole life.

Is this proof that dieting makes you fat?