Of course, under certain circumstances, non-pathogenic bacteria can also make people sick. For example, long-term abuse or use of antibiotics and hormones, receiving a lot of radiotherapy and drinking alcohol for a long time, some sensitive bacteria in the normal flora are suppressed or killed, while some drug-resistant bacteria multiply in large numbers, which causes the variety and quantity of bacteria to change, losing the original balance of mutual restriction and interdependence, resulting in flora imbalance. At the same time, a few pathogenic bacteria take the opportunity to reproduce and make people sick. Clinical double infection is a common example.
In recent years, scientists have put forward ecological prevention and control according to the above phenomenon. This therapy emphasizes the scientific treatment of bacteria, pays attention to protecting and supplementing the growth of normal flora, improves the microecological environment and establishes a higher microecological balance. Specific measures include not abusing antibiotics and other drugs in daily life, establishing a healthy lifestyle and developing some effective microecological agents. For example, probiotics such as lactic acid bacteria and bifidobacteria can be made into food, which can improve the balance of intestinal flora and improve the digestion and absorption function, especially for the health of the elderly and children.
At present, the most popular micro-ecological food is yogurt, which is cheap, rich and effective and worth recommending.