NIH SciBites: Turning Down the Dial on Hearing Loss

Why It Matters

Demonstrating CBD’s efficacy against noise‑induced hearing loss could create a drug‑based preventive strategy, protecting millions of workers and reducing long‑term healthcare costs associated with auditory decline.

Key Takeaways

• Everyday noise exposure leads to gradual, irreversible hearing loss.
• NIH researcher studies CBD as potential protective agent against noise damage.
• Mouse experiments compare CBD treatment to placebo for hearing preservation.
• CBD could protect ears without muffling sound, unlike earplugs.
• Findings may benefit workers in high‑noise occupations like construction.

Summary

The video features Jack, a post‑baccalaureate fellow at the NIH, describing his lab’s effort to curb noise‑induced hearing loss, a condition that stems from chronic exposure to everyday sounds and is currently irreversible.

He explains that while brief, extremely loud bursts can damage the ear, most loss results from prolonged low‑level noise. Because cannabidiol (CBD) is already FDA‑approved for seizures and shown to protect neurons, his team is testing whether it can similarly shield cochlear hair cells from death.

In a controlled mouse study, animals receive either CBD or placebo before being subjected to a calibrated loud‑noise protocol; auditory brainstem responses are recorded before and after exposure. “If CBD works, it could protect our ears the way earplugs do, but even better, because it wouldn't dampen any sound,” he notes.

Should the preclinical results translate to humans, CBD could become a non‑invasive prophylactic for workers in construction, aviation, theater and other high‑noise fields, offering a drug‑based alternative to traditional hearing protection and potentially reducing the public health burden of age‑related hearing impairment.

Original Description

Our world is noisy and only getting noisier. Constant exposure to loud, everyday sounds like traffic or construction work can cause hearing loss over time. Jack White, a postbaccalaureate research fellow at the National Institutes of Health (NIH), is investigating whether a non-psychoactive component of cannabis could help stop loud noise from killing the cells we need to hear. If his lab’s treatment works, it could provide people with biological earplugs that help protect their hearing.

Click here to learn more about the research being done in Jack’s lab: https://irp.nih.gov/pi/ronna-hertzano