I’m a little lost. Medtronics says to subtract fiber from total carbs. I found references to ADA saying to subtract half of fiber from total carbs, but haven’t found on ADA’s website.
I noticed soluble fiber on a nutrition label and searched the web where i got into soluble and insoluble fiber. Seems neither are digested, but soluble fiber is metabolized by bacteria to carbs that may be absorbed in the large intestine. So maybe it is really net carbs plus part of soluble fiber and it would seem to depend on the food type, specific food and the individual.
For “balanced” carb tortillas (19g total and 13g fiber) that is no longer part of my diet, carbs seemed to be between total and total minus half of fiber, possibly inconsistent from package to package. Lower carb sandwich wraps with lots of oats fiber are about total minus half. Soluble fiber in metamuscil capsules helps with my morning carb count, but is ignored in the evenings.
So I’m wondering what I might have missed, what works for others, if there are any comprehensive sources for soluble and insoluble fiber content, and if there are any simplified rules. As a thought, perhaps food labels should show soluble and insoluble fiber instead of just dietary fiber.