What Will Happen to Your Body If You Eat Avocado Every Day. The avocado is a unique fruit with multiple nutritional and health benefits. How would your body respond if you ate just one avocado a day? In fact, it would transform your life as you’d get amazing results: your breath will be fresh at all times, your kidneys and liver will work more efficiently, your blood pressure will become lower, just to name a few. There’s a miraculous mineral to be found in avocados: potassium. It helps your system keep a healthy fluid balance through chemical channels for cells and organs. Avocados are also a great source of vitamins C and E. Vitamin C is known for its involvement in the creation of collagen and elastin, which help to maintain the skin’s elasticity and firmness. Vitamin E takes it to a whole new level, reducing the damage of excessive sun exposure and counteracting aging.