Acid reflux occurs when stomach acid flows back into the esophagus and causes regurgitation or heartburn, which feels like a burning sensation in your chest or throat. If this happens regularly, you ...

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Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Erika Rasure is globally-recognized as a leading consumer economics subject matter expert, ...