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Home > Fitness & Health > Health Library > Potassium
Potassium is a mineral in the body that helps maintain fluid balance, nerve function, and muscle contraction, as well as the proper transmission of electrical impulses in the heart. Potatoes and bananas are especially good sources of potassium, which also is found in many meats, milks, fruits, vegetables, and grains.
Both low and high potassium levels can disrupt the normal electrical impulses in the heart, which leads to irregular heartbeats (arrhythmias).
Current as of: August 22, 2019
Author: Healthwise Staff
Medical Review:Adam Husney MD - Family Medicine & Rakesh K. Pai MD, FACC - Cardiology, Electrophysiology & Kathleen Romito MD - Family Medicine & Stephen Fort MD, MRCP, FRCPC - Interventional Cardiology
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