What's the difference between a potato and a candy bar?

About 10 minutes.

(This is obviously an oversimplification. I think there are probably lots of folks who can handle the carbs and oxylates in potatoes just fine, and heaven knows we would be in a dramatically different situation in the US if every candy bar were replaced with a potato.

But for people who are insulin resistant, it's a useful joke!]

This is usually the biggest problem for people going low carb without understanding what they're doing. They think, it's a healthy complex carb, it's good for me. Still turns to sugar, still causes insulin to be released.