Video summary
The term tinnitus originates from the Latin word *tingere*, meaning "to ring," describing a phantom acoustic sensation that only the patient can hear. This condition manifests as various noises such as ringing, buzzing, clicking, or roaring and affects an estimated 740 million adults globally, with over 120 million considering it a major life problem. Its prevalence is comparable to other leading causes of disability like hearing loss and migraines, impacting individuals across all age groups; while occurrence increases with age, approximately 10% of adults under 45 and even children report symptoms. The nature of tinnitus varies significantly between people and over time for the same individual, ranging from a single tone to complex combinations, though in rare cases it may be caused by actual insects rather than auditory hallucinations.
Although the exact mechanisms remain unknown, current understanding suggests that damage to the hair cells responsible for converting sound vibrations into electrical signals is a primary hypothesis. This cellular damage can result from loud noises, toxic medications, aging, or other insults, and tinnitus often co-occurs with hearing loss, dysfunction in the somatosensory system, or issues within the brain's sound-processing regions. While evidence regarding specific risk factors varies, observational studies consistently link smoking to an increased risk of developing tinnitus. Additionally, certain antibiotics ending in "-mycin," such as azithromycin and clarithromycin, are associated with higher risks when used frequently, though they should not be avoided if medically necessary but rather prescribed judiciously.
Preventive lifestyle factors also play a role beyond avoiding loud noises and smoking. Research indicates that caffeine intake does not increase risk and may even offer protection alongside other dietary habits like high fiber consumption. A ten-year study found that consuming more than 3.6 grams of fruit fiber daily, equivalent to about one medium apple or orange, was associated with over a 50% lower risk of developing tinnitus compared to those eating less fiber. Similarly, intake exceeding 4.2 grams of cereal fiber per day provided comparable benefits. It is also crucial to avoid undercooked pork due to the risk of *Streptococcus suis* infection, which can cause brain infections leading to long-term hearing problems and potential tinnitus.
For individuals suffering from chronic tinnitus, treatment efficacy remains debatable, often leading clinicians to suggest learning to live with it; however, there are various evidence-based options available including cognitive behavioral therapy, medications, and dietary supplements. The condition is also frequently related to headache syndromes and temporomandibular disorders like TMJ, though the direction of causality between these comorbidities remains unclear. In a forthcoming series covering this topic in four parts, further exploration will detail what treatments work, which do not, and how specific interventions might benefit those affected by tinnitus, moving beyond simple acceptance to informed management strategies supported by scientific evidence.
Read the full video transcript
[music]
The term tinitus comes from the Latin
word tier which means to ring.
Individuals experiencing tinitus report
an unspecified acoustic sound like
ringing but also buzzing, clicking and
other noises. The global impact of
tinitus is wide reaching with an
estimated 740 million adults affected.
And of those people over 120 million
perceive tenitus as a major problem in
their lives. This suggests the magnitude
of tinitus is similar to other leading
causes of years lived with a disability
like hearing loss, migraine and low back
pain. While tinitus occurrence is
associated with increasing age, it also
affects younger age groups. About 10% of
adults under 45, 14% of adults aed 45 to
64 and even children and adolescence
report tinitus symptoms.
The tricky thing about defining tinitus
is that no one else but the patient can
hear it. It's a phantom sound, a sort of
hallucination of the auditory sensory
system with high variability between
affected individuals and even varying
over time for an individual person. For
example, one person with tinitus might
perceive whistling or ringing while
another perceives roaring or crackling.
There could be a single tone or a
combination of different tones.
Now, in rare cases, it may not be a
phantom, but rather actual bugs living
in your ear canals. So, make sure you
have someone look in your ears before
making a tinitus diagnosis.
The current understanding of tinitus is
that it is a complex condition with
multiple factors contributing to its
origin, but the exact causes and
underlying mechanisms remain unknown.
One hypothesis is that it's triggered by
damage to the cclear cells, the tiny
hairike cells that help convert sound
vibrations into electrical signals in
our ear, which allows us to hear.
That damage might come from loud noises,
medicines toxic to the ear, aging, or
other insults.
Other potential causes include hearing
loss, dysfunction in the smata sensory
system, which helps your body feel and
understand the world through physical
sensations,
and dysfunction in the brain's sound
sensing regions.
The evidence for tenitus risk factors is
low, but not non-existent.
Hearing related factors like hearing
loss are consistently found in
observational studies. Beyond avoiding
loud noises that damage hearing, are
there any modifiable lifestyle related
factors to prevent getting tinitus in
the first place?
Smoking is consistently associated with
tenitus in cross-sectional and cohort
studies. Some medications like
macrolytes, a type of antibiotic, are
associated with risk with higher use
adding up to higher risk. Macroly drugs
typically have mison at the end of their
names. So things like ariththramycin,
chloriththramycin and aithroycin. That
is not to say people shouldn't take
antibiotics when they need them, but it
is a reminder to prescribe and use them
judiciously. What about mobile phone
use? Not supported by the evidence.
Caffeine intake also no indication of
risk and maybe even protective along
with other dietary factors like high
intake of fiber and fruit. about how
much might you need to eat for a
protective effect? In one 10-year
follow-up study, people consumed more
than 3.6 grams of fruit fiber per day.
So, that's about one medium apple or
orange or more than 4.2 g of cereal
fiber per day, equivalent to about a cup
of cooked whole grain pasta, had over a
50% lower risk of developing tinitus
over 10 years.
Also, don't eat undercooked pork as it
can give you a brain infection that can
result in long-term hearing problems due
to streptococcus suis, a bug profiled in
one of our videos on zooonautic animal
to human diseases.
Tinitus is also related to various
headache and pain syndromes and
co-occurrence with temporal mandibular
disorders like TMJ is common but it's
unclear if these coorbidities are risk
factors or consequences of tenitus.
For those experiencing chronic tinitus,
the efficacy of available treatment is
debatable. Often compelling the
clinician to convey the message that you
may have to learn to live with it. But
instead of saying you will have to live
with it, let's consider the evidence of
the best available options. Treatments
people try include everything from
cognitive behavioral therapy to
medications and dietary supplements. In
this four-part series, I'll cover
evidence for what works, what doesn't,
and what might benefit someone with
tinitus.