Potassium
Potassium is a necessary mineral in daily nutrition; it assists in muscle
contraction and in maintaining fluid and electrolyte balance in body cells.
Potassium is also important in sending nerve impulses as well as releasing
energy from protein, fat, and carbohydrates during metabolism.
A shortage of potassium can cause a potentially fatal condition known as
hypokalemia, frequently caused by diarrhea, increased diuresis and vomiting.
Deficiency symptoms include dry skin, acne, chills, diarrhea, impaired
cognitive function, muscle spasms, arrhythmia, decreased reflex response,
thirst, glucose intolerence, growth retardation, insomnia, elevated cholesterol,
and decreased blood pressure. Eating a variety of foods that contain potassium
is the best way to get an adequate amount.
Healthy individuals who eat a balanced diet rarely need supplements.
Foods with high sources of potassium include bananas, avocados, celery and
turnips, although many other fruits, vegetables, and meats contain potassium.
Research has indicated that diets high in potassium can reduce the risk of hypertension.
Some people with kidney disease are advised to avoid large quantities of dietary
potassium.
