Cannabis and Tinnitus: Effects in People With HIV

A large study of over 3,400 adults found no link between cannabis use and whether someone develops tinnitus. However, among those who already have tinnitus, cannabis users were 29% less likely to rate their symptoms as a moderate-to-very big problem.

Study Design: How the Research Was Conducted

Led by researchers Chukwuemeka N. Okafor, Deanna Ware, and Andrew Edmonds, this analysis used data from the MACS/WIHS Combined Cohort Study (MWCCS). The team examined cross-sectional information collected from October 2020 to September 2022. Participants had a mean age of 55, 55% were female, and 63% were people living with HIV (PWH).

Tinnitus was specifically defined as “bothersome ringing, roaring, or buzzing in the ears or head” lasting for at least five minutes within the past year. For those who reported it, severity was split into two categories: “no/small problem” versus “moderate to very big problem.” Cannabis use was based on self-reported frequency over the previous six months.

The researchers used statistical models adjusted for several factors that could confuse the results. These included age, sex, race/ethnicity, HIV status, exposure to loud noise, self-rated hearing, smoking, and depression. For participants with HIV, models also accounted for viral load suppression and years on specific medications.

Primary Finding: Cannabis and Tinnitus Severity, Not Prevalence

Out of 3,437 participants, 31% reported using cannabis and 16% reported experiencing tinnitus. The core finding is clear: there was no statistically significant association between cannabis use and whether a person had tinnitus at all. The presence of the condition was not linked to cannabis consumption.

The significant result emerged when looking at the subjective burden of the condition. Among the subset of participants with tinnitus, any cannabis use was associated with a 29% lower prevalence of rating their tinnitus as a moderate-to-severe problem (adjusted Prevalence Ratio, aPR=0.71). This means cannabis users were less likely to describe their tinnitus as a major issue compared to non-users.

A deeper look showed this effect was particularly pronounced in people without HIV. In that group, cannabis use was associated with a 42% lower prevalence of moderate-to-severe tinnitus (aPR=0.58). The association among people with HIV did not reach statistical significance.

Interpreting the Results: Perception and Coping

The authors propose that cannabis may not stop tinnitus from occurring but could change how distressing it feels. They suggest potential mechanisms could involve altered symptom perception or improved coping strategies, though the study design cannot confirm this. The psychoactive components of cannabis, particularly THC and CBD, are known to interact with brain networks involved in attention, emotion, and pain processing—pathways that are also relevant to the tinnitus experience.

It is important to stress what this study does not show. It does not prove that cannabis treats tinnitus. The cross-sectional design is a major limitation; it captures a single moment in time, so researchers cannot determine if cannabis use preceded changes in tinnitus severity or vice versa. The team explicitly states the findings are “hypothesis-generating” and require confirmation through longitudinal studies that track individuals over time.

The potential role of coping is intriguing in the context of other hearing-related conditions. For instance, managing the emotional response to sound is a key challenge in misophonia, where early schemas, personality, and psychopathology can influence distress. Similarly, the subjective burden of a symptom is a separate concern from its physical cause, a concept also explored in research on tinnitus and speech-in-noise performance in normal hearing individuals.

Practical Implications and Future Research

For clinicians and patients, this research introduces a nuanced perspective. It suggests that discussions about cannabis and tinnitus should focus not on prevention but on potential symptom modulation. However, this comes with significant caveats. The legal status of cannabis varies widely, and its use carries potential health risks, including dependency and cognitive side effects.

Patients considering cannabis for tinnitus severity should have a detailed conversation with their healthcare provider. This is especially critical for individuals with HIV or those on other medications, due to potential interactions. The study also highlights that effective management of tinnitus likely requires a multi-faceted approach addressing both the auditory perception and the emotional reaction.

The researchers call for longitudinal studies to establish causality. Future work should also aim to identify which components of cannabis (e.g., THC, CBD, other cannabinoids), what dosages, and what methods of consumption might be relevant. Understanding whether this effect is related to temporary intoxication or longer-term neuroadaptation is another key question.

This study adds to a growing body of evidence that the impact of a sensory condition like tinnitus is mediated by complex brain processes. The connection between mental state and physical sensation is well-established in sleep medicine, where factors like baseline depression can predict long-term outcomes in cognitive behavioral therapy for insomnia. Managing the overall stress load, through means such as improved sleep hygiene, remains a foundational part of managing chronic conditions like tinnitus.

Source: Okafor CN, Ware D, Edmonds A. Cannabis Use and Tinnitus Prevalence and Severity in the MACS/WIHS Combined Cohort Study. Curr Drug Res Rev. 2024. DOI: 10.2174/0118746136457303260813073100.