No the calorie content in the food don't change, as such. But heating, and otherwise processing food (like say putting it into a blender and turning it into a drinkable state, removing the need to expend energy on chewing) is a form of pre-digestion, meaning your body won't have to spend as many calories to get at the energy in the food. Giving a higher net-calorie content for the cooked food than if you were chewing down the raw unprocessed version of the same food.
Still... On a somewhat normal diet. We're talking extremely marginal amounts. Not something you need to worry about accounting for in the tracker. We're probably talking less than a handful of calories per day. Spread out over all the food you eat that day.
Edited by: GEEKLING at: 2/3/2012 (18:00)
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I just popped in to say I love our Spark community. There are some message boards where honest, legitimate questions like this are buried in an avalanche of snark. But several people replied in a friendly and kind way and even helpfully expanded everyone's knowledge with further information. I think it really attests to the good work we're doing here that this is the energy we generate!
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Just popped in to see what the thread was about. Very good question. Thanks for the answers.
The calorie count of a specific food will only change if you add something during cooking. For example, some places brush the sub with oil before toasting it, which would add calories. I don't think Subway does, but you should ask. Fried foods have more calories than the same food if it's broiled or steamed, because it absorbs oil.
Someone said that whether you eat veggies raw or cooked changes the count. That's kind of true and kind of not true. If you take a carrot and steam or boil it, you don't change the calories in that carrot. A cup of steamed carrots will have more calories than a cup of raw carrots, but that's because steamed carrots are softer and more dense, so more of them fit in a cup. The same thing happens if you take a cup of raisin bran from the top of a fresh box and compare it to a cup of raisin bran from the bottom of an almost-empty box; the second will have more calories because the flakes are all broken up and more of them fit in a cup. That's why everyone encourages you to weigh your food if you're trying to control calories.
This is a good question, from your example no, having the cheese melted or not melted wont change the calorie count. However in other instances it would.. for example whether you eat veggies raw or cook them will change the calorie count. Or how you prepared chicken -- baked, grilled, fried.
I know this may be a silly question, but I am wondering if calorie content changes depending on how food is prepared. Example: I have a Subway Veggie sub for lunch with cheese but is it still the same if I get it toasted and the cheese is melted?
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