I am creating a piece of software to help manage my mum's diabetes better. So the issue that I am having is that my mum enters into the program the foods she has eaten in the day as well as her glucose and BP readings, the program then looks at the foods and assigns them a rating according to the carb level or GI and then uses this to compare to a normal level as well as the readings. I don't know whether to use GI or carbs as a measure of how healthy the food? Or should i use something else?