Study provides insights to possibly prevent or delay acquired hearing loss.
BOSTON, MA – Researchers at Brigham and Women's Hospital found that consumption of two or more servings of fish per week was associated with a lower risk of hearing loss in women. Findings of the new study Fish and Fatty Acid Consumption and Hearing Loss study led by Sharon G. Curhan, MD, BWH Channing Division of Network Medicine, are published online on September 10 in the American Journal of Clinical Nutrition (AJCN).
"Acquired hearing loss is a highly prevalent and often disabling chronic health condition," stated Curhan, corresponding author. "Although a decline in hearing is often considered an inevitable aspect of aging, the identification of several potentially modifiable risk factors has provided new insight into possibilities for prevention or delay of acquired hearing loss."
Although evidence suggests higher intake of fish and long-chain omega-3 polyunsaturated fatty acids (PUFA) may be associated with lower risk of hearing loss, prospective information is limited. This prospective study examined over time the independent associations between consumption of total and specific types of fish, long-chain omega-3 PUFA, and self-reported hearing loss in women.
Data were from the Nurses' Health Study II, a prospective cohort study. In the study, 65,215 women were followed from 1991 to 2009. After 1,038,093 person-years of follow-up, 11,606 cases of incident hearing loss were reported. In comparison with women who rarely consumed fish, women who consumed two or more servings of fish per week had a 20 percent lower risk of hearing loss. When examined individually, higher consumption of each specific fish type was inversely associated with risk. Higher intake of long-chain omega-3PUFA was also inversely associated with risk of hearing loss.
"Consumption of any type of fish (tuna, dark fish, light fish, or shellfish) tended to be associated with lower risk. These findings suggest that diet may be important in the prevention of acquired hearing loss," stated Curhan.
The research was supported by grants DC010811 and UM1CA176726 from the National Institutes of Health and from Vanderbilt University School of Medicine.
Brigham and Women's Hospital (BWH) is a 793-bed nonprofit teaching affiliate of Harvard Medical School and a founding member of Partners HealthCare. BWH has more than 3.5 million annual patient visits, is the largest birthing center in Massachusetts and employs nearly 15,000 people. The Brigham's medical preeminence dates back to 1832, and today that rich history in clinical care is coupled with its national leadership in patient care, quality improvement and patient safety initiatives, and its dedication to research, innovation, community engagement and educating and training the next generation of health care professionals. Through investigation and discovery conducted at its Brigham Research Institute (BRI), BWH is an international leader in basic, clinical and translational research on human diseases, more than 1,000 physician-investigators and renowned biomedical scientists and faculty supported by nearly $650 million in funding. For the last 25 years, BWH ranked second in research funding from the National Institutes of Health (NIH) among independent hospitals. BWH continually pushes the boundaries of medicine, including building on its legacy in transplantation by performing a partial face transplant in 2009 and the nation's first full face transplant in 2011. BWH is also home to major landmark epidemiologic population studies, including the Nurses' and Physicians' Health Studies and the Women's Health Initiative. For more information, resources and to follow us on social media, please visit BWH's online newsroom.
