Five cups of coffee a day protect against tinnitus, study finds.
Those who drink four to five cups of coffee a day reduce their risk of developing the condition by 15 per cent, researchers find.
A study of more than 65,000 women found those who consumed the most dramatically reduced their risk of developing the constant ringing in the ears suffered by five million people in Britain.
Professor Gary Curhan, of Brigham and Women’s Hospital, Boston, said: “We observed a significant inverse association between caffeine intake and the incidence of tinnitus among these women.”
The research, published in the American Journal of Medicine tracked the cohort of nurses aged 30 to 44 for 18 years, asking them about their lifestyle and medical history, during which time 5,289 cases of the debilitating ear buzzing were reported.
When compared with women whose caffeine intake was about one and half regular cups of coffee a day, roughly 150 milligrams, the incidence of tinnitus was 15 percent lower among those who about five cups.
The majority of caffeine consumed among the women was from coffee and the results did not vary by age.
Added Prof Curhan: “The reason behind this observed association is unclear. We know caffeine stimulates the central nervous system, and previous research has demonstrated caffeine has a direct effect on the inner ear in both bench science and animal studies”.
Researchers note that further evidence is needed to make any recommendations about whether the addition of caffeine would improve tinnitus symptoms.