It depends on the amount. In that example the sugar clearly isn't a problem, but if you're eating multiple donuts where you're getting 50g of sugar, then youre

It depends on the amount. In that example the sugar clearly isn't a problem, but if you're eating multiple donuts where you're getting 50g of sugar, then youre getting 25g of fructose. And overloading your liver with fructose is linked to non-alcoholic fatty liver disease, visceral fat and inflammation - just like drinking alcohol