Concussion Depletes Brain Magnesium Brain magnesium drops measurably after concussion. Animal studies and human research consistently show reduced brain magnesium levels following traumatic brain injury, including mild concussion. The depletion persists for weeks. The depletion contributes to the symptom patterns of PCS, particularly headache, sleep disruption, and cognitive symptoms (Hoane, 2011). The depletion is part of the neurometabolic cascade. Concussion triggers a cascade of cellular events: potassium efflux, calcium influx, glutamate release, and magnesium depletion. Each component contributes to the energy crisis. The magnesium depletion specifically impairs NMDA receptor regulation, allowing excessive glutamate signaling that damages cells further. Restoring magnesium supports recovery. Replenishing brain magnesium addresses the depletion that contributes to symptoms. The supplementation produces measurable benefits in concussion patients, particularly for headache and sleep symptoms. The benefit is not dramatic but is consistent and well-documented. How Magnesium Helps Specific Symptoms Headache reduction. Magnesium regulates the cerebrovascular tone and NMDA receptor function that contribute to migraine and tension headache. Patients with concussion-related headaches often see substantial improvement with adequate magnesium supplementation. The effect is similar to magnesium's role in migraine prevention. Sleep improvement. Magnesium supports GABA receptor function and helps regulate the cortisol patterns that affect sleep. Patients with disrupted sleep often see improved sleep onset and quality with evening magnesium. The improvement supports the broader recovery sleep enables. Reduced anxiety. Magnesium's GABA effects also reduce anxiety symptoms. The autonomic dysregulation of PCS often produces anxiety. Magnesium supports the parasympathetic activation that reduces this anxiety. The effect compounds with other autonomic interventions. Muscle tension reduction. Magnesium directly supports muscle relaxation. The chronic muscle tension of PCS (particularly cervical and trapezius) responds partially to adequate magnesium. The reduced tension supports the broader physical recovery. Cognitive support. Magnesium-dependent enzymes support neural function broadly. The cognitive symptoms of PCS may improve with adequate magnesium, though the effect is subtle and develops over weeks rather than days. Mobility Support During Magnesium Treatment JME 155 Diaphragmatic breathing supports the parasympathetic activation that magnesium also promotes. The combined effects compound, producing better autonomic regulation than either alone. 10 breaths every 60-90 minutes throughout the day. The breathing-plus-magnesium combination addresses the autonomic component of PCS effectively. JME 14 Chin tucks address the cervical contribution that compounds with the headache reduction magnesium provides. The combined treatment of both mechanisms produces better headache outcomes than either alone. 10 repetitions with 5-second holds. JME 1 Cervical rotation maintains the proprioceptive function that supports the cognitive benefits magnesium may provide. The combined supports improve cognitive function. 10 repetitions each direction. JME 150 Thoracic rotation supports the breathing that autonomic regulation requires. Combined with magnesium's parasympathetic effects, the mobility supports comprehensive autonomic recovery. 8 repetitions per direction. Start your 3-day free trial for magnesium-protocol mobility programming. Choosing the Right Magnesium Form Magnesium glycinate (recommended). Glycinate form has high bioavailability and minimal GI side effects. The glycine itself supports sleep and reduces anxiety. Best general-purpose form for concussion recovery. Dose: 200-400 mg elemental magnesium daily. Magnesium L-threonate. Threonate form crosses the blood-brain barrier more effectively than other forms. Specifically formulated for cognitive support. More expensive than glycinate. May provide better cognitive benefits. Dose: 2000 mg threonate (provides 144 mg elemental magnesium) daily. Magnesium malate. Malate form provides additional energy support through the malate component. Useful for patients with prominent fatigue. Dose: 200-400 mg elemental magnesium daily. Magnesium citrate. High bioavailability but produces GI effects (loose stools) in some patients. Useful for patients with constipation but problematic otherwise. Dose: 200-400 mg elemental magnesium daily. Avoid magnesium oxide. Poor bioavailability (only 4% absorbed). Common in inexpensive supplements but ineffective. Check label and avoid this form. Topical magnesium. Magnesium oil or epsom salt baths provide some absorption through the skin. Useful adjunct, not a replacement for oral supplementation. Particularly helpful for muscle tension and for patients with GI sensitivity to oral forms. Daily Movement Routine JME 3 Lateral cervical flexion daily addresses the muscle tension that magnesium also helps reduce. The combined approach produces better tension reduction than either alone. 8 repetitions per side with 15-second holds. JME 42 Shoulder circles release the tension that responds to both physical and pharmacological intervention. The mobility complements the supplementation. 10 repetitions each direction. JME 15 Cervical extension supports cervical health that magnesium-influenced muscle relaxation enables. The combined effects produce better cervical recovery. 8 repetitions. JME 151 Lateral side bends with breathing combine mobility and autonomic regulation. The parasympathetic activation compounds with magnesium's effects. 8 repetitions per side. Combine treatments effectively with simplmobility's mobility programming. Dosing and Timing Strategy Start with 200 mg elemental magnesium glycinate at bedtime. Evening dosing supports sleep onset and overnight muscle relaxation. The starting dose minimizes the risk of GI effects while establishing tolerance. Increase to 400 mg over 1-2 weeks if tolerated. The therapeutic dose for most PCS patients is 300-400 mg elemental magnesium daily. Build up gradually to identify tolerance and optimize timing. Split dosing for higher doses. If 400 mg produces GI effects, split into 200 mg twice daily (morning and evening). The split dosing reduces GI exposure to large single doses. Take with food. Food improves absorption and reduces GI effects. Take with dinner if doing single evening dose, or with both meals if splitting. Expect 2-4 weeks for full effect. Brain magnesium repletion takes weeks. Some patients notice sleep improvement within 1-2 weeks. Full benefit on headache and other symptoms typically develops over 4-6 weeks of consistent use. When to Avoid Magnesium Supplementation Kidney disease. Impaired kidney function affects magnesium clearance. Patients with kidney disease should not supplement without nephrology guidance. Certain medications. Magnesium interacts with: bisphosphonates, certain antibiotics (tetracyclines, fluoroquinolones), digoxin, and some diuretics. Discuss with provider before starting. Severe GI conditions. Inflammatory bowel disease in flare, severe diarrhea, or other GI conditions may affect tolerability and absorption. Discuss with provider. Bowel obstruction concerns. Magnesium can affect bowel motility. Patients with bowel obstruction history should consult provider. Should I test my magnesium level before supplementing? Serum magnesium tests are unreliable for assessing brain magnesium. Most patients can supplement without testing. If testing is desired, RBC magnesium is more informative than serum magnesium but still not definitive. Most providers recommend a 4-6 week trial of supplementation rather than testing first. Are there foods that provide enough magnesium? Dark leafy greens, nuts, seeds, whole grains, and dark chocolate are magnesium sources. Most Americans consume 200-300 mg daily from food, below the optimal level even without concussion. Concussion increases the need. Food sources are valuable but supplementation is often needed to reach therapeutic levels. Why did my magnesium make me have diarrhea? Magnesium can have laxative effects, particularly oxide and citrate forms. Switch to glycinate or L-threonate forms which produce less GI effect. Reduce dose if needed. Take with food. Most patients tolerate appropriate forms without GI issues. References Hoane, M. R. (2011). The role of magnesium therapy in learning and memory. Magnesium in the Central Nervous System, University of Adelaide Press. PubMed Patricios, J. S., et al. (2023). Consensus statement on concussion in sport: the 6th International Conference on Concussion in Sport, Amsterdam, October 2022. British Journal of Sports Medicine, 57(11), 695-711. PubMed