Choosing magnesium “for weight loss” often targets the wrong problem. Magnesium is not a fat burner. However, during dieting, if you experience cramps, sleep disruption, or constipation, form choice can be goal-based: citrate may help constipation by promoting bowel activity, while gentler forms like glycinate may suit those prone to diarrhea. Still, the core drivers of fat loss are a calorie deficit, adequate protein, fiber, activity, and good sleep. If weight loss stalls, consider thyroid function, insulin resistance, medications, and true calorie intake. Use magnesium as a supportive tool—not a miracle solution.