Magnesium deficiency, also known as hypomagnesemia, is often overlooked. Symptoms can be both physical and mental. Muscle twitches, tremors, and cramps are common signs. Severe cases may cause seizures. Mental symptoms include apathy, stress, depression, and anxiety. Magnesium deficiency is a risk factor for osteoporosis, weakening bones and lowering calcium levels. Fatigue and muscle weakness are also symptoms. Low magnesium may increase blood pressure, and supplementation can help. Severe asthma and heart arrhythmia are linked to low magnesium levels. Rich sources of magnesium include seeds, nuts, whole grains, beans, and leafy greens. If you suspect magnesium deficiency, consult your doctor.