From wikipeida:  http://en.wikipedia.org/wiki/Gluttony 

Derived from the Latin gluttire, meaning to gulp down or swallow, gluttony is the over-indulgence and over-consumption of food, drink, or intoxicants to the point of waste. In some Christian denominations, it is considered one of the seven deadly sins—a misplaced desire of food or its withholding from the needy.

“Pope Innocent XI (paraphrased) asserts that it is a sin to eat or to drink from the sole motive of satisfying the palate. However, it is not a fault to feel pleasure in eating: for it is, generally speaking, impossible to eat without experiencing the delight which food naturally produces. But it is a defect to eat, like beasts, through the sole motive of sensual gratification, and without any reasonable object. Hence, the most delicious meats may be eaten without sin, if the motive be good and worthy of a rational creature; and, in taking the coarsest food through attachment to pleasure, there may be a fault.”

I ate until I was uncomfortably full.  In all things, moderation….including Sushi.