My doctor and dietician told me to take some fiber. But exactly why do i need fiber for

fiber helps with digestive health- you should get 20 to 25 grams per day. I take vitaband fiber gummies.

So you don't get constipated

I love Benefibre and I never took it before my pre-op diet. It is a powder but it is tasteless and it does NOT thicken. You can stir it in water, your tea, food etc... Fibre is thought to help out digestion of fats and carbohydrates, it helps reduce chlosterol - so many benefits!!