Do hearing aids help with mild to moderate hearing loss?

What the researchers did

This updated review searched for randomized and crossover trials published up to August 2024, and also included published existing and ongoing studies up to May 2026. It pooled 16 trials involving 2261 adults with mild to moderate hearing loss. Average ages in the studies ranged from 58 to 83 years, and studies lasted between 4 weeks and 3 years. Some trials compared hearing aids with waiting lists or no specific help, while others used a placebo hearing aid, an education programme, an assistive listening device, or auditory training. Because the trials measured results with different questionnaires, the review converted the differences to a common scale so they could be combined.

Where hearing aids helped most

The most consistent benefits were in hearing-specific participation and listening ability. People using hearing aids scored better on measures that ask how hearing loss affects everyday roles and activities, and on tests of understanding speech and other sounds. The review judged these benefits likely to be real, though the evidence is moderate rather than definitive because blinding was often inadequate or absent. A possible small improvement in general health-related quality of life was also seen, but this finding is less secure.

What was not established

The update looked specifically at loneliness and working memory. The combined results did not establish a benefit for loneliness or working memory. Loneliness scores were close to no difference, and working memory findings were too inconsistent to interpret. Harms were only checked in six of the 16 studies. One study described two people stopping use because of pain or ear dryness, but the overall pain evidence is very uncertain, and no noise-induced hearing loss was reported among people whose harms were monitored. This does not prove there are no harms; it mainly shows how little information is available.

Why the results need cautious reading

Most trials could not keep participants from knowing whether they were using a hearing aid, so expectations may have influenced self-reported outcomes. In addition, because different questionnaires were condensed onto a common scale, the size of the benefit cannot be translated into a simple everyday score. The included evidence is still compatible with hearing aids being a reasonable first option for people seeking help with mild to moderate hearing loss, but it is not precise enough to support strong claims about memory or social connection.