http://www.weightlossforall.com/complex-carbs.htm
Actually, potatoes are a combination of some complex sugars, but mostly simple sugars. As to rice and pasta, if they're made of whole grain, they break down slowly, but if they're white flour, they can break down into glucose faster than glucose. Something that amazed me was seeing a glycemic index, and the food at the top was -- get this -- a bagel, above even sucrose! Of course, it was a white four bagel, not one made of whole grain.
The body doesn't make the difference when talking about sugars because even if it is fructose, lactose or sucrose or glucose and even if it's from a candy or a vegetable, in the end they will all end up being glucose in your body. What does make a point tho is that complex carbohydrates take longer time to break down in your body to that means the blood glucose remains more stable. Complex carbohydrates are startchy food like patatoes, rice and pastas. Simple carbohydrates are what you should avoid and those are desserts and candies.
Best regards,
M4
Yes. Now, what do you mean by natural sugar? And even white flour and potatoes can cause problems for a diabetic, since they convert to sugar very quickly in the body. And sugar is what your pancreas has trouble with when you're diabetic. And type 1 or type 2? They are quite different.