How Dr Pepper Snared the No. 2 Soft Drink Spot From Mighty Pepsi

In 2015, CNN's Gary Tuchman visited a Fort Worth woman named Elizabeth Sullivan, age 104, to uncover her secret to longevity. Sullivan was happy to tell him: three cans of Dr Pepper a day. "Doctors told me that if I drink it, I will die--but they died first," she said. Sullivan's health advice is open...