Given the task definition and input, reply with output. In this task, you are given a sentence in the English language. Your job is to translate the English sentence into the Spanish language.

What theoretical model in Health Psychology defends that the two main explanatory factors of an individual's health behaviors are the perception of vulnerability or susceptibility to the disease and the perceived severity of its consequences ?

¿Qué modelo teórico en Psicología de la Salud defiende que los dos principales factores explicativos de las conductas de salud de un individuo son la percepción de vulnerabilidad o susceptibilidad a la enfermedad y la severidad percibida de sus consecuencias?