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Higher caffeine intake is associated with lower rates of tinnitus - a ringing or buzzing sound in the ear - in younger and middle-aged women, a new study has found. In the study, which followed more than 65,000 women in the Nurses' Health Study II, researchers tracked self-reported resultsregarding lifestyle and medical history from these women, aged 30 to 44 years and without tinnitus in 1991.
Information on self-reported tinnitus and date of onset was obtained from questionnaires returned in 2009, with cases defined as women who reported symptoms 'a few days/week' or 'daily.' After 18 years of follow up, researchers identified 5,289 cases of reported incident tinnitus. 'We observed a significant inverse association between caffeine intake and the incidence of tinnitus among these women,' said Gary Curhan, senior author of the paper at the Channing Division of Network Medicine at Brigham and Women's Hospital and Professor of Medicine at Harvard Medical School.
Specifically, researchers report that when compared with women with caffeine intake less than 150 milligrammes/day, the incidence of reported tinnitus was 15 per cent lower among those women who consumed 450 to 599 mg/day of caffeine. The majority of caffeine consumed among the women was from coffee and the results did not vary by age. 'The reason behind this observed association is unclear,' said Curhan.
'We know that caffeine stimulates the central nervous system, and previous research has demonstrated that 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,' he said. The research is published in the American Journal of Medicine.
Here are health benefits of coffee
1. Good for your heart
Scientists say green tea and coffee, if made a regular part of the diet, could benefit the heart, according to research conducted in Japan and published in the US. Green tea and coffee may help lower your risk of having a stroke, especially when both are a regular part of your diet, according to research published in Stroke: Journal of the American Heart Association. 'This is the first large-scale study to examine the combined effects of both green tea and coffee on stroke risks,' said Yoshihiro Kokubo, lead author of the study at Japan's National Cerebral and Cardiovascular Centre. 'You may make a small but positive lifestyle change to help lower the risk of stroke by adding daily green tea to your diet.' Read more
2. Could prevent autoimmune liver disease!
Research has shown that regular coffee drinkers are at a reduced risk of primary sclerosing cholangitis - an autoimmune liver disease. PSC is an inflammatory disease of the bile ducts that results in inflammation and subsequent fibrosis that can lead to cirrhosis of the liver, liver failure and biliary cancer. Study author Craig Lammert, M.D., a Mayo Clinic gastroenterologist said, 'While rare, PSC has extremely detrimental effects.' Read more
3. Could reduce risk of suicide!
A study suggested that having two to four cups of coffee every day can reduce the risk of suicide among men and women by 50 per cent. The finding was reached after researchers from the Harvard School of Public Health reviewed data from three previous US studies. They found that the risk of suicide amongst adults, drinking several cups of caffeinated coffee on a daily basis, was about half compared to those who drank decaffeinated coffee, very little coffee or no coffee at all. Read more about Health benefits of coffee to help justify your addiction!
With inputs from PTI
Photo source: Getty images
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