What are refined carbs?

Refined carbohydrate is the opposite of complexed carbs. Complexed carbohydrates are as they are reaped from the garden - the yam, potatoes, etc. When foods are processed and some of its nutrients are taken out then these are referred to as refined. Therefore white flower and all white flower product such as bread, biscuits bun etc., would be refined carbohydrate. Sugar would also be refined carbohydrate.