By Laura Strickler and Steve Patterson
BOULDER, Colo. — One day in fall 2018, Bo Gribbon began to vomit and couldn’t stop. He threw up multiple times an hour from morning to night before his mother drove him to the hospital near their home here.
“It felt like Edwards Scissorhands was trying to grab my intestines and pull them out,” said Gribbon, then 17.
Over the next nine months, Gribbon went to the emergency room 11 times for the same problem: severe vomiting and screaming at the same time that lasted for hours. When a physician assistant told him the likely cause, Gribbon didn’t believe it at first. He had never heard of marijuana producing a side effect like that.