Why can the use of antibiotics lead to intestinal dysfunction?

1) antibiotics kill not only harmful, but also beneficial (symbiotic) bacteria that live in the human intestine;
2) as a result, the processes of fiber breakdown, water absorption, the formation of feces, and others are disrupted.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.