2. Improved immune system function
The systems of the human body do not operate independently of each other. One system affects another. For example, there are different types of antibodies present in the gut, which help fight infection throughout the body. Probiotics may increase those antibodies, which can lead to a stronger immune system. In addition, probiotics may decrease the number of harmful bacteria in the gut, which can make you sick. The better your immune system functions, the less likely you are to get sick with illnesses, such as the flu.