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Vitamin >>> Potassium >>>

Potassium has a role in many functions in the human body such as heartbeat,
muscle contraction, nerve conduction, and energy production. Moreover, it is
necessary to protein synthesis, for the conversion of blood sugar into
glycogen, and stimulation of normal movements of the intestinal tract. Studies
have revealed a strong correlation between potassium and blood pressure.
Many test subjects with increased levels of potassium kept blood pressure
normalized while some with hypertension even lowered their blood pressure.
In another study, a relation between potassium and a lowered rate of
stroke-related deaths was shown.

Deficiency can be caused by high sodium diets or medications, continual
diarrhea or vomiting, some bowel disorders, fasting or anorexia nervosa. For
the average person, deficiency in potassium can cause everyday symptoms
such as fatigue and weakness. Those using diuretics are especially at risk for
deficiency since these types of drugs deplete potassium. Toxicity is threatened
generally only to those with kidney failure, a condition that prevents excretion
of potassium, causing it to build up in the tissue.

No RDA has been established for this mineral. Excellent food sources of
potassium include fresh fruits and vegetables. Most people can get all the
potassium they need from their diet, without supplementation. Diuretic users,
on the other hand, may need supplementation, prescribed by a physician.

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