Magnesium levels refer to the amount of magnesium present in the body, which is an essential mineral for various bodily functions. It plays a crucial role in muscle and nerve function, blood sugar control, and bone health. Normal magnesium levels in the blood typically range from 1.7 to 2.2 milligrams per deciliter (mg/dL). Low magnesium levels, known as hypomagnesemia, can lead to symptoms such as muscle cramps, fatigue, and irregular heart rhythms. Conversely, high magnesium levels, or hypermagnesemia, can occur due to kidney problems and may cause nausea, low blood pressure, and respiratory issues. Maintaining balanced magnesium levels is vital for overall health.