You've no doubt heard your clients say...
Perhaps your response was, "It's normal to experience changes in your memory health day to day, like forgetting where your glasses are or remembering people's names. That's ok.. What's not normal is finding your glasses in the fridge."
Sadly, if the later is the case for your client, the horse has bolted. BUT if your clients are reporting subjective changes, then this is the time to respond.