According to Krylov, excessive consumption of kvass, which contains too much sugar, can lead to obesity and problems with the heart and blood vessels. But the preservatives contained in kvass are usually natural.
On the other hand, malt in kvass can increase the level of female sex hormones. And this already has a negative effect on male potency.
As for sugar-free cola, Krylov noted the presence of aspartame, a sugar substitute that contains phenylalanine. Phenylalanine can decrease serotonin stores in the body.
Krylov also warned that when phenylalanine is heated or transported, it increases the risk of stomach and colon cancer.
He noted that there is nothing beneficial in cola, while kvass contains B vitamins due to yeast, which improves nerve conduction.
Source: Ferra
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