because we don't have the enzymes to metabolize it, or break it down
Non-digestible carbohydrates known as fiber.
Foods rich in fiber last longer in your system because fiber is not digestible by the human body. Fiber moves through the intestines intact cleaning a path as it goes. This helps keep the digestive tract working properly by avoiding such ailments as constipation.
WebMD is a great resource for all things medical. Using this site will give you information about Chrons Disease, helping to find some easily digestible foods for your condition.
You can find a short list of easily digestible foods along with other information about digestion in the related links section.
all foods have calories in, some just have more than others!
Different species prefer different foods. Some are vegetarian, some are carnivores and others are omnivorous.
No, kilocalories measure the amount of energy in foods. There is between 4 and 9 kilocalories per gram in the digestible portion of any foods.
Some of these are: Foods Work vestments and others
some foods tend to get bad if not refrigerated like milk while foods that are packaged or canned tend to be in the pantry.
Some are good at some foods and some are not so good as others
For some people, hot foods are really good. For others, they are not.
It is possible that some foods may not be metabolized as efficiently as others even though they contain more kcal/unit.