The USDA says adults don't get enough of seven essential nutrients. Potassium is a key one. Studies show that potassium can help keep blood pressure healthy. Potassium also supports fertility and muscle and nerve function. But while potassium is in lots of foods naturally -- like milk, potatoes, sweet potatoes, legumes, avocados, and bananas -- many adults still aren't getting enough. Potassium is one of the minerals found in aloe vera including calcium, sodium, iron, to name a few.