US researchers believe that women using hormone replacement therapies (HRT) may be at danger of losing their hearing.
Scientists from the University of Rochester have stated in the Proceedings of the National Academy of Sciences that women using HRT containing oestrogen and progestogen have worse hearing than those opting for HRT containing only oestrogen or no HRT at all.
The findings come from tests on some 124 post-menopausal women aged between 60 and 84 and are the latest complaints to be labelled against HRT.
Studies have found that dementia and heart problems may also be linked to the treatment.
However, David Sturdee, from the Royal College of Obstetricians and Gynaecology, told the BBC that the link was "far from established".
"There may be slight risks, but if the symptoms of menopause are severe each individual has to ask themselves if they would be better being off HRT," he said.
Around one million middle-aged women use HRT in the UK.