There's a new study out there that just might back up Mayor Michael Nutter's controversial proposed "soda tax" proposal.
Researchers at the University of North Carolina studied more than 5,000 young adults.
They found paying a dollar more for soda caused people to consume 124 fewer calories a day.
Using that formula, researchers say over one year, an 18-percent tax on soda could cause someone to shed up to 5 pounds.