For years until now we felt that women who produced milk have delivered a baby. But have you heard that there is a medical condition which is not very common that could also lead lactating- even though someone is not pregnant! 'Galactorrhoea is milky nipple discharge unrelated to normal milk production' explains Dr Ashwini Bhalerao-Gandhi Consultant Gynaecologist PD Hinduja Hospital Mumbai. The condition can occur in those without any sexual contact those who never had children or even after menopause. However the condition can happen in men or infants. Some commonly known reasons could be excessive breast stimulation thyroid side-effects