Caffeine may make you want more sugar

Scientists from Cornell University found caffeine tempers taste buds temporarily, making food and drink taste less sweet.

The research is published in the Journal of Food Science and was conducted by Robin Dando et al.

Caffeine is a powerful antagonist of adenosine receptors, which promote relaxation and sleepiness.

Suppressing the receptors awakens people but decreases their ability to taste sweetness—which, ironically, may make them desire it more. The current study demonstrates taste modulation in the real world.