If you have a food allergy, you're likely aware of it by now. Many people are allergic to nuts and shellfish, and were either born with the allergy or developed it with age. Despite how careful you ...

Tooth sensitivity caused by heat or cold typically occurs when a tooth’s outer protective layer, the enamel, has worn down. Receding gums that expose a tooth’s root may also be a cause. Share on ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Michael Boyle is an experienced financial professional with more than 10 years working with ...