The purpose of this research was to examine the effects of an individual health education program to the OPD hyperlipidemia clients in relations to knowledge, health beliefs, self-efficacy, diet-control behavior, exercise, and blood cholesterol level. In addition, this research identified the factors associated with diet-control behavior, exercise, and blood cholesterol level. A quasi-experimental design was used in this research. Each subject was randomly assigned to one of the two groups. The control group, which had a total of 62 subjects, read the leaflet by themselves. The experimental group, which consisted of 70 subjects, received a consultation from the researcher pertaining to health education program. The results showed that the experimental group had significant improvements in knowledge, health beliefs (including perceived susceptibility, perceived severity, perceived benefits of taking action and perceived barrier of taking action) , self-efficacy (including diet-con-trol, exercise) , diet-control behavior behavior, exercise, TC, LDL-C, and TG level. However, the control group had improvements only in knowledge, health belief (perceived barrier of taking action), diet-control behavior, and TC level. The individual health education program is extremely effective and thus, should be seriously considered an option for the future.