If you have a healthy pancreas there is zero reason not to get a load of your calories from sugar. If you have healthy pancreas and keep overloading them with

If you have a healthy pancreas there is zero reason not to get a load of your calories from sugar. If you have healthy pancreas and keep overloading them with sugar, you will quickly develop insulin sensitivity and eventually kill your pancreas. "Anti-sugar thinking" has started out as diabetes research and over the last few decades has turned up plenty of evidence of how unrestricted sugar heavy intake leads to a number of health related issues and degenerative diseases. Role of sugar in endogenous glycation processes can't be underestimated either.