Chewing gum has long been a go-to for fresh breath and a quick snack without the calories. Yet, many of us have no idea what's in it. While it seems harmless, the ingredients in chewing gum can ...

"The people I talk to are always surprised, and disgusted, when they find out they've been chewing on a lump of malleable plastic," Jones wrote. "Most manufacturers just don't advertise what gum ...

Gum chewing may exacerbate jaw problems among people who are prone to issues or injuries with the temporomandibular joint, or TMJ, which connects the jawbone to the skull, Dr. Arsenault said.