[Articles] Association between hyperemesis gravidarum and depression: a national register-based controlled study in Finland

The bidirectional association between hyperemesis gravidarum and depression suggests shared underlying biological mechanisms and highlights the long-term mental health burden associated with hyperemesis gravidarum. This finding emphasises the importance of systematic psychiatric screening during and after pregnancy, as well as the assessment of lifetime depression history in reproductive care. Improved collaboration between psychiatry, gynaecology, and primary care is essential to enhance patient outcomes.