On the other end of the spectrum are people, like some patients of mine, who frequently feel like they've been hit by a bus when they wake up in the morning with headaches, stomach aches, joint pains and fatigue.

CNN: Gluten: 5 things you need to know

If we pay restaurant workers a living wage and ensure they can stay home when they're sick, that means fewer taxpayer dollars on public health emergencies and fewer stomach aches for diners as well.

CNN: Fight flu, give restaurant workers paid sick leave