All power, principle or substance capable of acting in the body; and it is harmful if its presence breaks the balance of the guest
It is the loss of dynamic equilibrium (homeostasis) that maintains the composition, structure or function of the organism
It is any living being that in natural circumstances can be affected by an agent
It is known as ecological triad or the three components of the disease
Process of continuous adjustments made by a living being to maintain dynamic balance with the environment.
Totality of external factors: physical, chemical, biological and sociocultural that surround an individual or group
The three dimensions of a Human Being