Note that the traditional point of view related to the interrelations Ecology/Medicine does not consider the concept of “One Health” but an “assessment of the response to environmental pressure”, which had nothing to do with the “care of the patient” of medicine. The physician’s responsibility is to repair the damage. Still, in doing this, a doctor should contact internal specialists and external ecoiatra, at least to avoid reintroducing the patient into the same environment that contributed to the insurgence of the disease. The assessment of the impact of the man/environment relationship concerning health is based (a) on the cumulative effect of the stress due to an improper man-environment relationship (cWR), physio-environmental parameters (WR-Phys.) increased by the impacts of the stress due to the “Psycho-social” environment (WR-PSoc.); (b) cWR receives a further cumulative effect from the bionomic conditions of the landscape unit where the patient lives, synthetically measured by the bionomic parameter of the Bionomic Functionality (BF), as stated in the introduction, leading to their Environmental Cumulative Stress (ECS). An anamnesis able to consider ECS can confirm that the deficiencies of natural vegetation infrastructures influence morbidity, leading to anomalies from environmental stress and altered environment-human body information. Listing the main sets of prevention expressed today in Western civilization, we can see (A) stress reduction, (B) periodic medical checkups, (C) adequate physical-sporting activity, (D) control of pollution and smog, and (E) correct nutrition and diet. However, following bionomic principles and methods, at least three new sets must be added: (F) landscape syndrome evaluation, (G) environmental conditioning of people, and (H) adequate natural activity. This could be useful for preventing an Indicative Morbidity per each municipality considered as a landscape unit (LU). The FIM (Function of Indicative Morbidity) is proportional to the DI (Diagnostic Index) and the average disease ratio. An evident proportion of DI/Morbidity must be investigated.