(KAIT/NBC) - Your digestive system plays a key role in your health.
Processed foods high in fat or sugar throws off the balance of bacteria in your gut, which causes bloating, gas, diarrhea, and headaches.
An unhealthy gut could lead to skin problems, poor concentration, and depression.
To recover, Clinical Dietitian Gabriela Gardner says the solution is fermented foods and fiber.
"It's called kefir. It's a probiotic, natural probiotic, it's a cultured milk and you can see it's a little bit bubbly. It has a bubbly consistency and that's because all that live cultures are still there," Gardener says.
She also says sugar-free cultured drinks found in the yogurt and milk aisle help restore good bacteria.
Get more diet tips from Gardner by clicking here.