if i were to put coconut oil in a smoothie, should i heat it up first to turn it into a liquid? or can i just use it in the solid form?
If your ingredients are cold, you'll have little bits of solid coconut oil. Which will probably happen whether or not you heat it. And it depends on whether or not that bothers you.
also can someone please recommend me some low GI fruits i can use to make with these smoothies? i'm not getting clear answers when i google low gi fruits. one site says peaches are low gi and then another site says they're high gi.
Apples, coconut, pears, bananas.
You may want to stay away from citrus fruits, strawberries, and kiwis for awhile, which have been known to give people troubles. Then reintroduce them and note any changes. Personally, bananas used to make my throat itch but I haven't retried them in awhile. Just had a ton of tangerines the other day (they had chemicals all over them too, I saw on the package after buying them. alas I ate them anyway) with no reaction, bodily or skin-related. Play around with it. An old man in a chinese herb shop told me to stay away from poultry, asparagus, mango, and pineapple when I asked him for advice on acne. The mango and pineapple made sense since it's high GI (they have lots of good stuff too) but I have no idea with the others.
Also I'm sure it's fine to consume any high gi fruits you like as long as you're lowering the glycemic load
with other ingredients. That's what counts.