The body requires a diverse population of friendly gut bacteria. They can help us to improve our digestion and relieve symptoms of irritable bowel syndrome.
However probiotics found in supplements and some drinks/foods contain only a few different strains of bacteria. Dietary Fiber on the other hand, has a direct impact on constipation and digestion. It can help stools move along more quickly and dietary fiber feeds our friendly gut bacteria to increase in number and kind.
We can obtain fiber from vegetables, fruits, whole grains, and legumes.
The table below gives a good illustration of Probiotics vs Dietary Fiber.