Best OTC Hearing Aids for Seniors in 2026
How to evaluate over-the-counter hearing aids using speech clarity, comfort, usability, trial period, and warranty — not just price.
Read the guide →
Research Library
Hearing health research, written for adults and their families.
Our research library covers OTC hearing technology, age-related hearing loss, speech-in-noise comprehension, and the consumer decisions people face when buying their first hearing device. Every entry references public clinical or regulatory sources.
Featured research
How Self-Fitting Hearing Aids Work
What the FDA's self-fitting category actually includes, how in-app hearing tests calibrate amplification, and the limits of self-fitting.
Read the explainer →OTC vs Prescription Hearing Aids
What changed with the 2022 FDA OTC rule, who each category serves, and the practical differences in fitting, follow-up, and cost.
Read the comparison →Research focus areas
Age-related hearing loss (presbycusis)
Roughly one in three adults aged 65–74 in the U.S. has hearing loss, and nearly half of those over 75 do. We focus on how this gradual change affects daily life and what evidence-informed support looks like.
OTC hearing aid technology
Since October 2022, FDA-regulated OTC hearing aids have been available to U.S. adults with perceived mild-to-moderate hearing loss without a clinic visit. We track product categories, capabilities, and limitations.
Speech-in-noise comprehension
The most common complaint is not "things are quieter" — it's "I can't follow conversations in restaurants." We cover how directional microphones, noise reduction, and multi-channel processing address this.
Untreated hearing loss & cognition
The 2020 Lancet Commission identified hearing loss as the largest potentially modifiable risk factor for dementia in midlife. We summarize what the evidence does — and does not — say.
Consumer protection & buying risk
Trial periods, return policies, and warranties vary widely. We document what to look for and how to verify a seller's claims before purchase.
Family-facing communication
Family members are often the first to notice hearing changes. We publish education aimed at the people supporting a loved one through a buying decision.
How this research is produced. Our writers review FDA guidance, peer-reviewed studies, public health agency reporting (NIDCD, WHO), and consumer protection sources. See our methodology and editorial standards for how claims are sourced and reviewed.