Dentists Warn That Smiling Too Much Causes 'Happiness Cavities'
New research links excessive joy to expensive dental bills.
The American Dental Association released a study showing that chronic positivity erodes enamel. 'Grumpy people have stronger teeth,' warned Dr. Grinch Smile. Recommendations include watching more reality TV and avoiding cute animal videos. Dentists are stocking 'frown protectors' for optimists.