The journey back to wholism or to be most reasonable the journey back to integrated systems management is perhaps the most important faced by medical science.
Huge distinct silos of knowledge and expertise exist now. No one individual can hope to integrate all the knowledge and know how, so referral mechanism exist to allow a patient to access these complexities.
However none of these areas actually exist in isolation from the whole. Rheumatology and dietary information, optometry and cardiovascular medicine are intimately woven together.
Dealing with them in isolation may deny the patient the opportunity to understand the fully physiological mechanism involved and lead to treatment of symptoms rather than cause.