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According to WebMD, potassium aids in prompting the heart to squeeze blood through the body thousands of times a day. Potassium is also helpful in the movement of muscles, the functioning of nerves and filtering of blood through the kidneys.


Pure potassium is a solid with a silver white color that tarnishes easily when exposed to oxygen. This element is located in the alkali metal group (group 1) on the periodic table. Potassium's symbol is K, and its atomic number is 19.


Potassium levels below 3.5 millimoles per liter can lead to weakness, tiredness, abdominal cramping, tingling and palpitations, according to WebMD. A very low potassium level below 2.5 millimoles per liter is very dangerous and requires medical attention, states Mayo Clinic.


A potassium level of 7 millimoles per liter is considered dangerous for the body, according to the Mayo Clinic. This condition is known as hyperkalemia.


Potassium, a major electrolyte and an essential mineral, can be found in all cells of the human body. The concentrations of potassium found outside of the body's cells are lower than those within. The differences in the levels of both potassium and sodium across cell membranes influence the osmotic


According to the National Institutes of Health, some causes of low potassium levels in the body are diarrhea, vomiting, antibiotics, overuse of laxatives, kidney disease, diuretics, low magnesium levels and sweating. WebMD explains that dehydration is an overarching cause.


Potassium is available for purchase from Amazon.com and Walgreens. Potassium helps the kidneys, heart and other body organs to function effectively, according to WebMD. It also helps to prevent some conditions, such as heart rhythm disorders.


Effects of high potassium levels in the body may include breathing difficulties, erratic heartbeat, feelings of weakness and nausea, and sensations such as tingling or numbness, according to the University of Maryland Medical Center. However, individuals with high potassium levels do not always disp


High serum potassium, known as hyperkalemia, can occur when kidneys do not function correctly or when an individual’s diet is abnormally high in potassium. Other causes include the breakdown of red blood cells or muscle tissue, trauma and uncontrolled diabetes, according to WebMD.


Plants need potassium for metabolic processes. Photosynthesis, protein synthesis and enzyme activation needed for plant growth and reproduction could not occur without potassium. Potassium affects many attributes of a plant, including taste, size and shape.