PRL and Anxiety: Notably, in consideration of the possible link between fatigue and suicidal risks, some specific biological factors which may be associated with and even predict a suicide attempt, such as prolactin and thyroid hormones, could be detected regularly,[36] especially for those who have experienced bereavement.[28] A healthy lifestyle can reduce anxiety and fatigue.[37,38] So for those nurses, having a healthy lifestyle like balanced diet, regular exercise, and enjoying recreation properly may help maintain physical fitness and relieve fatigue.[39,40]