Cortisol

For the first time, scientists have uncovered a distinct biological process triggered in those who suffer from high levels of Monday anxiety, resulting in chronic stress. And it can lead to serious health problems if it's left unmanaged.

You already know when you are feeling highly stressed, but low-grade background stress is harder to detect. A new dental flosser from researchers at Tufts University aims to make it easier by monitoring the chemistry of your saliva.