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05.10.2017

Three ways to prevent hearing loss

If you get lots of exercise, limit your fat mass and also keep your waist slim, you'll reduce the chance of having hearing loss as you age. This emerged from an epidemiological study published by researchers at Brigham and Women's Hospital in Boston in 2013 in the American Journal of Medicine.

Study
The researchers used data that had been gathered during the Nurses Health Study II. 116,430 women participated in the study, all of whom were aged between 25 and 42 in 1989 when the study started, and who were followed for 22 years.

For this study the researchers looked specifically at hearing problems that the women reported in 2009.

Results
The higher the women's BMI, the more likely they were to have hearing problems.

A second factor was waist measurement. The smaller the waist – read: the less abdominal fat the women had - the less likely they were to have hearing problems. The protective effect of a slim waist remained after the researchers had filtered out the effect of BMI.

And finally, physical exercise also had a protective effect. The more the women exercised, the less the likelihood of developing hearing problems. And that relationship remained intact after the researchers had filtered out the effect of BMI and waist circumference.

Explanation
"Higher levels of physical activity or better cardiorespiratory fitness may protect against hearing loss by improving vascular supply to the cochlea, preventing auditory neurodegeneration and neurotransmitter loss, and possibly moderating noise-induced damage," the researchers wrote.

Conclusion
"In this large prospective study of women, higher body mass index and larger waist circumference were associated independently with an increased risk of hearing loss", the researchers summarised. "The risk decreased with increasing level of physical activity; even walking 2 hours or more per week was associated with a lower risk."

"These findings may provide insight into potential mechanisms that underlie acquired hearing loss and suggest possible strategies for prevention."

Source:
Am J Med. 2013 Dec;126(12):1142.e1-8.

More:
Diet rich in magnesium, betacarotene and vitamins C and E protects your hearing 02.02.2014
Animal study: lecithin supplement keeps hearing sharp 18.06.2009

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