5. Constant thirst
One way the body tries to balance off potassium deficiency is by shedding fluid from the body. This makes you weak, dehydrated and always thirsty. But as you keep drinking water, your body will continue to shed it.
4. Abdominal cramp
Low potassium often affects the intestines and stomach too. They may also stop functioning properly and this can cause either abdominal cramp or constipation or even both of them together. At this point, deficiency in potassium becomes life-threatening.
3. Arm and leg cramp
It is not only abdominal cramp that low potassium causes. It also causes cramp in the arms and legs because it stops several muscles from working properly, thereby leading to cramping and twitching.