Brace yourselves before eating these foods. Dr. Sam Jethwa, a London-based cosmetic dentist and founder of Bespoke Smile, is revealing the five foods people should avoid for the sake of their teeth.

When it comes to healthy eating, most of us try to make smart-ish choices. We know it’s better to have fruit or nuts than a chocolate bar, or have a smoothie instead of a fizzy drink. But, while these ...