Registered dietitian Leah Cahill says people come to her all the time asking about nutrition information they've seen on social media.

"Some of it is fine. But a lot of the things that they've heard on social media are not safe or not correct," said Cahill, also an associate professor with Dalhousie University’s department of medicine.

A new peer-reviewed study led by Cahill and published in Canada's top nutrition journal puts some numbers to the potential quality of information people are receiv…