What do you know about dementia prevention? GPs and primary care nurses are invited to answer a 15-minute online survey at bit.ly/irndp. Tell us what you already know, what you need to know, and where the barriers might be for dementia risk reduction in primary health care. Your responses will help the International Research Network on Dementia Prevention (IRNDP) develop a tailored knowledge package for primary care. Approved by UNSW HREAP C: Behavioural sciences (no. 3120).