Are you into energy drinks like Cobra? They may keep you up and going, but they have a not-so-youthful effect on your teeth.
In fact, teeth exposed to energy drinks were stripped of more enamel than sports drinks, according to a General Dentistry study. Energy drinks were also found to be more acidic—no coincidence there. (Remember: Acidity makes your teeth more vulnerable to stains.)
If you really need your energy drink fix, sip from a straw: “The less contact with your teeth, the better,” says Kantor. But on a different note, they’re bad for your kidney.