Potassium Deficiency from Dehydration, Vomiting & Diarrhea: Risks & Symptoms

True.

Extreme dehydration, vomiting, and diarrhea can all lead to a loss of potassium from the body. Potassium is an important mineral that helps to regulate the heart, muscles, and kidneys. When potassium levels are too low, it can cause a number of problems, including muscle weakness, fatigue, and irregular heartbeat. In severe cases, potassium deficiency can even be fatal.