Fructose is one of the most common monosaccharides along with glucose, which serves as a source of energy for the body. However, in contrast, fructose is almost completely absorbed by liver cells and converted into free fatty acids, which can lead to obesity and the development of cardiovascular diseases. In fruits, its content varies - the sweeter the fruit, the more fructose it contains.The harm of fructose is that it causes fluctuations in blood glucose, and with constant use - insulin resistance, since the body's response to insulin is dulled and its production increases, which is the first step towards diabetes.