Originally Posted by trypt
I'd like to see an option for effective carbohydrates. Preferably as a display option for the pie chart, like a check box that would redraw the pie chart after removing (grams of fiber) from the carbohydrate count.
An option is good. Fibre still has some caloric value, soluble fibre at least when it is fermented in the large intestine. It's about 2 cal per gram, when
digested into short-chain fatty acids.
Unless you can seperate insoluble and soluble fibre though, it may make little sense to assign a caloric value to it. You could perhaps assume it's 50/50 sol/insol and say 1 cal per gram but that is splitting hairs in the big picture.
Likewise sugar alcohols are another foodstuff which has some caloric value varying on the source, also digested in a similar manner as soluble fibre.
Generally these have about 2.5 cal/g. People on a diet are more likely to use these substances.
Even protein nowadays is being considered to have a lower cal content due to the energy required to digest it. 3.5 cal/g has been bantered about.
In any event, the whole tracking and estimating process is just an approximation - a good +/- 10%.