- Studies say first-time mothers’ voices can drop by almost a sixth of an octave
- Discovery came as researchers studied tones of 40 women over ten-year period
- However the huskier voices reverted within five years to pre-pregnancy levels
First-time mothers can develop a deeper voice after giving birth, a study has found.
Their voices can drop by almost a sixth of an octave, says Dr Kasia Pisanski, of Sussex University, where researchers studied the tones of 40 women over a ten-year period.
First-time mothers’ voices can drop by almost a sixth of an octave, says Dr Kasia Pisanski, of Sussex University
She said: ‘Women’s voices became relatively lower-pitched and more monotonous after giving birth than during pregnancy or before.’
But the huskier voices reverted within five years to pre-pregnancy levels.
The changes may be due to hormones or tiredness, said the study in the journal Evolution and Human Behavior.
Advertisement