Despite efforts to promote healthy diet or adequate physical activity among Type II diabetics in most clinics in Kenya the incidence, progression and severity still persit, possibly because of non- mental related patient input approaches used. Motivation theories have been developed for health educators attending to Type II diabetics to aid in promoting healthy dietary and physical activity practices, however, this approach has not been welcome in most diabetic clinics. There was a crucial need to empirically develop a Mental Health Tailored Communicaion Model that could be used to effectively promote healthy dietary and physical activity behaviours among Type II diabetics in Kenya. This model was built on the Theory of Planned Behaviour (Ajzen, 1991) as a foundational framework and creative improvement made using health belief concepts (Glanz et al.,2002) and other important post-intentional factors (Falko, 2005). This book emphasises the applicability of Sequential Exploratory Mixed Methods Design and Structural Equation Modelling techniques in testing the goodness of fit of theoretically nested models.