Canker sores are vexing and common. The reason they occur isn’t clear, but your toothpaste could be a factor. An ingredient often used to make toothpaste foamy, sodium lauryl sulfate (SLS), has been ...
Q. When I was a kid, I used to get horrible canker sores. My mother treated them with silver nitrate, which hurt like heck. After my braces came off, I took better care of my teeth and brushed more ...