Obesity is emerging as a morbid disease in developing and Westernized countries. Because of its comorbidity diseases, it is cost-effective to prevent and manage this disease earlier. In Thailand, this alarming disease has long been studied, but the prevalence is still higher than that in the past. Physicians should
recognize it well and have a definite direction to face and combat this dangerous disease. The present paper demonstrates its definition, prevalence, health hazard, economic cost and strategies to deal with it in the present and future.

Keywords: Obesity, Thailand