I've read somewhere that grapefruit juice slows your digestion down (apparently it disables certain digestive enzymes), and that's why some people are advised to take their medication with it, so it absorps better.
My question: could i use it to give my meal a lower gi ?
For example, if i have a high gi meal (like white bread or something), if i drink grapefruit juice with it, could it turn out moderate gi, due to slower digestion.
And if i take my supps in the morning, would they be absorped better?