low potassium in pregnancy causes
The signs of a potassium deficiency. Low potassium is most often the result of chronic or severe vomiting or diarrhea, or the use of certain diuretics, rather than a shortage in your diet. A shortage of potassium could cause weakness, fatigue, muscle cramps, constipation, and abnormal heart rhythms.he signs of a potassium deficiency. Low potassium is most often the result of chronic or severe vomiting or diarrhea, or the use of certain diuretics, rather than a shortage in your diet. A shortage of potassium could cause weakness, fatigue, muscle cramps, constipation, and abnormal heart rhythms.