Just as the article states that the excessive drinking of cola drinks can cause problems with low potassium. What it doesn't tell you is that the phosphoric acid found in these drinks can also lead to being hypocalcemic. As the acid usually displaces the calcium that's found in the blood stream, and raises the phosphoric levels. The side affects of hypocalcemia can range from numbing/tingling of the extremities, tetany(seizing of the muscle), all the way to seizures and even death in most extreme cases. To those who have a rare condition called Hypoparathyroidism, it can become life threatening withing minutes of we call a "crash". We use the term "crash" to signify that the blood calcium to have suddenly dropped to low levels and start become symptomatic. When that happens and the person can't get bring the levels back up. The next course of action would to get the person to emergency room as fast as possible. The thing is anyone can become hypocalcemic at anytime. Especially when they are on really poor diet.