Everything has it's merits and demerits.It depend on use,use everything moderately.As excess of everything is bad.High glycemic foods increase blood sugar level,not only resulting in diabetes,cancers but also obesity.Obesity is a leading cause of death(about 25-30)percent
@angli, our consumer society has programmed most of us to live in excessively, quantity above quality.
Yes it is true that now a days only quantity matter a lot and different biotechnology techniques are use to increase quantity.But for raising quality they don't do anything...