There is a saying that there is a "reward circuit" about sugar in the human brain, that is, sugar intake, which can cause the brain to secrete a substance that makes people happy. Dopamine is that clever salesman who makes you unknowingly I m stuck in the sugar trap. However, excessive intake of anything can have adverse effects. Studies have found that the consequences of long-term high sugar may not only lead to physical obesity, but also psychological depression. But it is important to understand the food and the relationship between the human body and mind is not a overnight effort. It will be a long-term study. According to this text, the following is true:. ['Dopamine is the physiological basis for happiness.', 'The more sugar you consume, the more you will be happy.', 'People who consume long-term sugar are more likely to be depressed.', "The claims about sugar's reward circuit are baseless."]