While sports and energy drinks help athletes re-hydrate after a long workout, if consumed on a regular basis they can damage teeth. These beverages may cause irreversible damage to dental enamel, potentially resulting in severe tooth decay according to a study reported in the January/February issue of General Dentistry, the Academy of General Dentistry ’s clinical, peer-reviewed journal. Dental enamel is the thin, outer layer of hard tissue that helps maintain the tooth structure and shape, while protecting it from decay.