fructose

But they also have a unique adaptation: switching their energy source from glucose to fructose.

Vu also recommended using an invert sugar, which is a liquid mixture of the monosaccharides glucose and fructose.

If you prefer organically grown, avoid high fructose corn syrup, GMO’s or eschew factory farmed meats and eggs, you can find substitutes and ingredients that meet your standards with relative ease.

“The only place you're going to get pure fructose is in a fruit — and eating whole fruit is good for you, and actually reduces the risks of diabetes and obesity,” Katz said.

These sugar-laden confections are mostly made of high fructose corn syrup, saturated fat and additives.