There is a saying that the human brain has a reward circuit for sugar, that is, sugar intake, which causes the brain to secrete substances that make people happy  Dopamine is the eloquent salesman who makes you fall into a sugar trap before you know it  However, eating too much can be counterproductive  The study found that the consequences of long-term high sugar may lead not only to physical obesity, but also to psychological depression  But it will not take overnight to understand the relationship between food and human body and mind
It will be a long-term study
The claim about the reward circuit of sugar is groundless.