Magnesium deficiency, or hypomagnesemia, occurs when magnesium levels in the blood fall below normal. This essential mineral plays a crucial role in over 300 biochemical reactions in the body, impacting muscle and nerve function, heart health, and energy production. Symptoms of magnesium deficiency can include low appetite, nausea, muscle spasms, tremors, and abnormal heart rhythms.The causes of magnesium deficiency can vary, including inadequate dietary intake, gastrointestinal disorders, or certain medications that affect absorption. Individuals experiencing fatigue, weakness, or mental health issues may also be at risk. Preventing magnesium deficiency involves consuming a balanced diet rich in magnesium sources such as leafy greens, nuts, seeds, and whole grains. If symptoms arise, it is essential to consult a healthcare professional for proper diagnosis and treatment, which may include dietary changes or supplementation. Recognizing the signs early can help mitigate potential health risks associated with low magnesium levels.