Higher than average levels of potassium in the blood are referred to as hyperkalemia. This condition can occur due to a number of causes, including kidney disorders or dietary problems. Although potassium is extremely important for a number of body functions, such as regulation of digestion and metabolism, too much potassium in the blood can cause adverse effects, according to Medline Plus.
Irregular Heartbeat
Considered one of the most serious effects of excess potassium intake, an irregular heartbeat results when excess potassium accumulates in the body. To the sufferer, an irregular heartbeat may feel like the pulse is racing or pounding, according to Medline Plus. These occurrences may take place only for a few moments, then subside. However, if these symptoms are accompanied by difficulty breathing, chest pain, dizziness or sweating, you should call a physician. An irregular heartbeat is especially dangerous because it can weaken heart muscle and result in permanent damage that leads to heart failure.
Nausea
Excess potassium can irritate the gastrointestinal system, according to the Linus Pauling Institute at Oregon State University. When you consume too much potassium in the form of a dietary supplement or pill, the inner lining of the intestines can develop painful ulcers. Other side effects of excess potassium include nausea, throwing up, stomach pain and diarrhea.
Muscle Weakness
When a person experiences higher-than-average levels of potassium, the excess potassium may cause red blood cells to burst or cause tissue damage, according to the Linus Pauling Institute at Oregon State University. Both of these outcomes affect your body's ability to properly circulate blood. For this reason, you may experience skin tingling, particularly in the hands and feet, and even muscle weakness. In its most severe forms, the impairment in circulation can result in paralysis, according to the Mayo Clinic.
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