Long ago, during the Persian Gulf Tanker War, the Force Surgeon told me something I will never forget. Basically he said that our medical community was encountering diseases endemic to the Gulf Region that they had never dreamed of.
That, coupled with observations of friends (military veterans) struggling with exotic diseases has convinced me that the broad medical community really needs a better method of diagnosis.
Until an instant, foolproof method of diagnosis is developed, we had all better be actively involved in our health & well-being!