The fatness in Thai societies are directly problems of affected to the health condition and become the beginning point causing other relevant illnesses, to arise indirectly which affected the economic system, the natural resources, and the budget of the country. These causes are from 4 factors, namely:- (1) the causes of fatness from mentality, are the emotional conditions which cannot control the food hungriness and cause one to have over-eating. These problems will affect the mental condition, for example, the lacking of self respect, the lacking of self confidence etc. (2) the causes of fatness from bodies, which arises from the changing of the physical condition. These problems will cause the personality problem to arise. (3) the causes of fatness from behavior which arises from the changing of the lifestyle nowadays, for example, the behavior in badly consuming, in bad nutrition or the lack of exercise. These problems will cause the health problems to arise. (4) the causes of fatness from societies, the culture which follows the western culture flowing the consuming, the groups of people who are seeking for wealth, for example, the groups of people who produced the products and the services, and the groups of people who are responsible for agricultural industrial policy, advertisements, etc. These groups are in lack of social responsibility, seek for profit only and are not interested in the affect to societies and the best way for fatness solving is just the prevention.

                 The fatness in Theravāda Buddhist Scriptures are found in two main conditions (1) the physical illness, for example, eating behavior, not moderating in eating (Bhojane-mattaññutā) or from Karma, etc. (2) the mental illness, arising from Kilesa, Taṇhā, which we cannot control, for example, when the greed, the anger, the delusion or the desire occurred in our minds and we could not see them because we do not use Sati to control the emotion. These Kilesas and Taṇhās will cause us to be in lack of considering in eating and to eat too much food. However, we can solve these problems by using the Buddhadamma to prevent and to cure these symptoms.

                The way of applying the Buddhadamma to solving the problems of fatness in Thai societies nowadays will begin from studying and applying it to use for oneself first also to adjust the concept to be the role model of living for others in the societies. It is found that the Buddhadammas that are used for solving the problems of fatness in mind perspective are three items, those are:- (1) 4 Iddhipādas are the bases for success. It is the persistence in mind to do something with perseverance and dedication until success, (2) Adhṭṭhāna, virtues which should be established in the mind, one must set the goal and go for it and (3) 4 Satipaṭṭhānas are the practice to have Sati- Sampajañña in daily life, for example, having Sati in eating, in exercise, etc. For the body perspective, the Law of Kamma will be conceived with the right view. For the behavioral perspective, there are (1) Bhojane-mattaññutā is to know      how  to moderate in eating, and considering before eating what the real value of the food,                   (2) Ᾱhārepaṭikῡlasaññā is the perception of the loathsomeness of food. The Buddhadamma that we use to solve the problems of fatness in societies is Kalyāṇamittatā : having a good friends or good company in the favourable, intellectual environment. They will guide the living in many area such as food consuming, the exercise and the emotional adjustment by having a campaign continuously for the good cooperation and for the societies to have the awareness and to remind what should be the right path to solve the problems of fatness for true sustainability