Both in young people and adults, eating disorders represent an important and decisive factor in the development phase of a healthy life. Therefore, a popular area of ​​research in the medical field is the factors that contribute to the motivation to eat, to have a food preference, and to engage in the “enjoyment” of food. It was more commonly known that scientists had addressed the need and desire for nourishment to our internal homeostatic system. This meant that food consumption was dependent on energy balance and maintenance. However, ongoing research has demonstrated that the regulation of eating behavior and established homeostasis systems are integrated. It turned out that the establishment of the system of "liking" and "wanting" was a reward of the brain. These systems work together to stimulate or inhibit eating behavior, despite having separate neurological mechanisms. However, there is a dissociation between the two systems where overeating or starvation can occur, which is highly harmful to the human body. Therefore, further research on the mechanisms and pathways between the homeostasis system and the brain's reward system is needed to understand the effects of eating behavior, such as overeating, undereating, and eating disorders that can be prevented and further analyzed to create a healthy environment. lifestyle for those who suffer from these disorders. Several serious eating disorders such as bulimia, obesity and anorexia nervosa have emerged. This has caused significant youth mortality and is still increasing. Therefore scientists and psychologists have been pushed to do more research in understanding the physiological and psychological regulation of eating and eating behavior. Homeostasis was the key factor in the response...... middle of paper ......10827-108316. Coleman, R. A., & Herrmann, T. S. (1999). Nutritional regulation of leptin in humans. Diabetologia, 42(6), 639-6467. Friedman, J. M., & Halaas, J. L. (1998). Leptin and body weight regulation in mammals. Nature, 395, 763-7708. Olds J. & Milner, P. (1954) Positive reinforcement produced by electrical stimulation of the septal area and other regions of the rat brain. Journal of Comparative and Physical Psychology, 47(6), 4199. Palmiter, R.D. (2007) Is dopamine a physiologically relevant mediator of eating behavior? Trends in Neuroscience, 30(8), 375-38110. Schultz, W. (1998). Predictive reward signaling of dopamine neurons. Journal of Neurophysiology, 80(1), 1-2711. Smith, KS & Berridge KC (2007) Limbic opioid circuitry for reward: interaction between nucleus accumbens and ventral pallidum hedonic hotspots. The journal of neuroscience 27(7), 1594-1605