Reading an article about potassium in your diet. It was on Yahoo life. On the other hand, eating too little potassium is known to cause fatigue and muscle cramping, according to Lal. It can have far more serious consequences, too. For example, one study found that people who ate the most potassium had a 20% lower risk of dying compared to those who ate the least. Really? I thought everyone had a 100% chance of dying.