Why Magnesium Levels Decline with Age & What to Do About It? Magnesium is the 4th most abundant element in the human body. It is a fundamental mineral that show involvement in almost 3000 enzymes reaction in human body. The balance of magnesium, is very important to maintain a healthy body. In this article, we will confer about Magnesium Levels, why they are important, reason of their declining, and how to maintain it. What are the magnesium levels? Magnesium is