Consumption of natural fruit juices is considered by many people as a healthy alternative to soft drinks, which offers several vitamins and has great nutritional value.

But the truth is that fresh fruit juice is not as healthy as people think.


But why?

To make a glass of natural orange juice we need to use 3-4 oranges, more than we would normally eat if we ate them whole. The juice contains a large amount of sugar, in the form of fructose, that it is absorbed very quickly by our body, as if we were putting a glucose serum intravenously.

When the blood sugar levels rise even for a few hours, the procedure of glycosylation increases. The uncontrolled, non-enzymatic reaction between proteins and sugars can significantly alter the structure and function of proteins.

A sugar molecule attaches to a protein resulting in the formation of a non-functional glycated protein structure, which is called advanced glycation end products (AGEs).

Research over the last 20 years has proven that AGEs are involved in most of the diseases associated with cell degeneration, such as:

  • Alzheimer’s disease
  • Cancer
  • Heart disease
  • Type II diabetes
  • Kidney disorders
  • Atherosclerosis
  • High blood pressure
  • Vision disorders
  • Skin disorders

Because proteins are present throughout the body, the destructive capacity of AGEs is enormous. Understanding how to prevent the formation of AGEs is crucial to slowing the process of these diseases and reducing the risk of degenerative diseases.

When we eat whole fruits, especially with the skin, we get more fiber and antioxidants that slow down the rate at which sugar is absorbed in the form of fructose and in addition the feeling of satiety increases.

Fructose is also converted to triglycerides , which, when produced in small quantities, produce energy.

However, when the intake of fructose is larger than the body needs, there is a significant deposition of fat in the liver, resulting in a fatty liver. Subsequently, there is a higher risk for liver cirrhosis, but also obesity and insulin resistance.

In addition, excessive consumption of fructose significantly impairs the body’s metabolic balance. In conclusion, it is wise to avoid the consumption of fruit juices and to replace them with the consumption of whole fruits.


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