Sugars are not only found in sweets. They are a class of carbohydrates found in most foods and beverages. You probably already are familiar with glucose, fructose and sucrose, but lactose, dextrose, starch and sugar are also forms. So what happens when you eat something sweet?
As explained in the video below, the first thing that happens is activating receptors of the tongue that allow you to feel the sweet taste. This sends a signal to the brain stem (medulla oblongata) and the cerebral cortex, where our tastes are processed. Then, the cortex sends a signal to the reward system in the brain through a series of systems of electrical and chemical path through several different brain regions, especially in order to obtain an answer to a question subconscious ” I do it again? “therefore, when you have that warm vague feeling satisfied after eating a bag of cookies, which is the reward system in the brain that tells you to do it again.
However, food is not the only stimulant here. The reward system is also activated by sex, drugs and social contact. In moderate amounts this is not a bad thing. But when sugar overload, or when consumed in excess over a long period of time, like drugs, can cause a series of events in the brain that trigger cravings uncontrollable sugar, loss of control and greater tolerance sugar.
There is a great chemical responsible for this biological system reward – dopamine. In people with addiction to drugs such as nicotine and alcohol, dopamine receptors are sent into overdrive, making the person constantly searching for that feeling of “high”. This eventually leads to addiction. The same goes for sugar, although not as extreme as in the case of other addictive substances.
For more information see the video: