Sorry, but aren’t potatoes even worse than white bread and sugar regarding the glycemic index? According to google they have scores between 80 and 90 on average while sugar (sucrose) has a score of 68.
I guess starch is really bad. I wasn’t aware it has such a high impact.
Don’t get me wrong they are not terrible in a balanced diet, but I don’t believe they have any real benefits either. Besides they are tasty which is honestly a good reason to like foods.