Cory Portnuff

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Assistant Clinical Professor of Audiology and Clinical Audiologist, University of Colorado Anschutz

Many movies reach sound levels of 85 decibels and beyond. GoodLifeStudio/E+ via Getty Images

September 26, 2023

Cory Portnuff, University of Colorado Anschutz

About 40 million Americans have hearing problems due to exposure to loud sounds.

Now that over-the-counter hearing aids are available, it’s important to know what questions to ask. peakSTOCK/iStock via Getty Images Plus

November 4, 2022

Vinaya Manchaiah, University of Colorado Anschutz and Cory Portnuff, University of Colorado Anschutz

They are cheaper to buy and don’t require a doctor’s prescription. But OTC hearing aids come with some limitations.