Magnesium
Magnesium — the mineral involved in 300+ enzymatic reactions. Sleep quality, muscle function, and which form actually works.
VERDICT
The Protocol says: Magnesium supplementation is genuinely useful for a few specific things—blood sugar control, blood pressure, and migraine prevention—but oversold for most others. The effects are real but modest, and the form matters: citrate beats oxide. If you have diabetes, hypertension, or frequent migraines, it's worth trying; if you're hoping for better sleep or muscle cramps, the evidence doesn't support it.
Key Findings
- Magnesium citrate is significantly better absorbed than oxide or amino-acid chelate forms, making formulation choice a real factor in effectiveness.
- 250mg daily magnesium measurably improves blood sugar control and insulin sensitivity in type 2 diabetes patients within three months.
- Magnesium lowers systolic and diastolic blood pressure by 2–3 mmHg in both hypertensive and normal-BP adults at 300–400mg daily doses.
- For migraines, IV magnesium reduces acute pain while oral magnesium prevents future migraines in a dose-dependent manner.
- Magnesium combined with vitamin B6 reduces stress and anxiety more than magnesium alone in healthy adults.
- Magnesium supplementation shows no meaningful effect on preventing skeletal muscle cramps or improving sleep in older adults with insomnia.
All Studies (40)
Sorted by impact. Each study summarized in one sentence.
Magnesium supplementation modestly improved blood sugar control and insulin sensitivity in people with diabetes.
Modest improvement in glucose and insulin
Magnesium supplementation lowered systolic blood pressure by 2-3 mmHg and diastolic by 2-3 mmHg in hypertensive adults.
Small but consistent blood pressure reduction
Intravenous magnesium reduced acute migraine pain; oral magnesium prevented future migraines.
Magnesium helps both acute and preventive migraine relief
Multiple dietary supplements including magnesium reduced migraine frequency, duration, severity, and monthly migraine days dose-dependently.
Magnesium reduces migraine frequency and severity
Magnesium citrate was more absorbed by the body than oxide or amino-acid chelate forms.
Citrate form absorbs better than oxide
Higher magnesium intake was associated with better bone mineral density and reduced fracture risk in older adults.
Magnesium supports bone strength in aging
250mg daily magnesium for three months improved blood sugar control in type 2 diabetes patients.
250mg magnesium daily improves diabetes blood sugar control
Magnesium supplementation reduced inflammatory markers and improved sleep quality in adults over 51 with poor sleep.
Magnesium reduces inflammation and improves sleep quality
Magnesium plus omega-6/7 supplements reduced severe acne as effectively as prescription isotretinoin in adolescents.
Magnesium + omega reduced resistant acne
Magnesium supplements lowered blood pressure modestly in both hypertensive and normal-blood-pressure adults at doses of 300-400mg daily.
Magnesium modestly lowers blood pressure
Magnesium supplementation shows limited evidence for improving sleep in older adults with insomnia.
Weak evidence for sleep improvement in elderly
Magnesium plus vitamin B6 reduced stress and anxiety more than magnesium alone in stressed but healthy adults.
Combined supplement better for stress reduction
Magnesium and vitamin D supplementation improved mental health symptoms in children with ADHD.
Combined supplements improve ADHD mental health
Magnesium supplementation shows no clear effectiveness for preventing skeletal muscle cramps.
No evidence magnesium prevents muscle cramps
People with ADHD have lower serum magnesium levels than those without ADHD.
ADHD associated with low magnesium levels
Magnesium among dietary supplements showed modest improvements in subjective sleep quality.
Magnesium modestly improves self-reported sleep quality
Magnesium and potassium supplementation improved insomnia and sleep hormones in diabetic patients.
Combined Mg/K reduces insomnia in diabetics
Magnesium supplementation reduced abnormal bleeding, hair loss, acne, and improved quality of life in PCOS women.
Magnesium alleviates multiple PCOS symptoms
Magnesium citrate reduced arterial stiffness; oxide and sulfate forms showed similar benefits.
Magnesium citrate improves arterial flexibility
Combined magnesium and vitamin D improved vitamin D status and reduced inflammation better than vitamin D alone.
Magnesium enhances vitamin D effectiveness
Magnesium supplementation improved insulin resistance, lipid profiles, and glucose control in PCOS women.
Magnesium improves metabolic health in PCOS
Low magnesium levels are associated with increased risk of diabetic foot ulcers and poor healing.
Magnesium deficiency linked to diabetic foot ulcers
Magnesium-enriched Mediterranean diet reduced anxiety, improved mood and sleep quality in fibromyalgia patients.
Magnesium diet improves anxiety and sleep in fibromyalgia
Nutritional interventions including magnesium may help heal diabetic foot ulcers faster and more completely.
Nutrition including magnesium aids diabetic wound healing
Magnesium supplementation did not reduce vascular calcification in chronic kidney disease patients despite raising blood magnesium.
Magnesium supplementation fails to prevent vascular calcification
100mg daily magnesium for one month reduced stress levels by 24% in fibromyalgia patients.
100mg magnesium daily reduces fibromyalgia-related stress
Magnesium and vitamin B6 together reduced restless legs syndrome symptoms in 75 patients.
Magnesium plus B6 reduces restless legs syndrome symptoms
A supplement combining magnesium, riboflavin, and Q10 reduced migraine frequency in adults with 3+ migraines monthly.
Magnesium-riboflavin-Q10 combination reduces migraine attacks
Magnesium plus vitamin B6 reduced stress more than magnesium alone in low-magnesium adults with high stress levels.
Magnesium + B6 beats magnesium alone for stress
MMFS-01 (magnesium compound) improved cognitive function and sleep in elderly adults with age-related cognitive decline.
Magnesium compound improved memory and sleep
Magnesium with zinc and vitamin A improved thyroid function and reduced inflammation in hypothyroid patients.
Magnesium trio improved thyroid health markers
Magnesium combined with B vitamins, rhodiola, and L-theanine reduced stress, improved sleep, and lowered pain in chronically stressed adults.
Magnesium combo reduced stress and improved sleep
Magnesium supplementation reduced leg cramps during pregnancy in most studies, though results were somewhat inconsistent.
Magnesium likely reduces pregnancy leg cramps
Melatonin plus magnesium (200mg) improved sleep quality and resting metabolism in adults with sleep disturbances.
Magnesium + melatonin improved sleep quality
Magnesium supplementation produces small improvements in muscle strength and power in healthy adults.
Minor boost to muscle strength and power
350mg daily magnesium for 10 days did not reduce muscle soreness or improve strength after intense exercise.
No benefit for muscle soreness or performance
Magnesium supplementation had minimal effect on reducing inflammatory markers in the blood.
Weak anti-inflammatory effect at best
Magnesium diglycinate absorbs much better than magnesium oxide in patients with intestinal resection.
Diglycinate form absorbs better than oxide
Combining vitamin D and magnesium for 12 weeks did not improve bone turnover markers or blood sugar control in overweight adults.
Combined D + magnesium had no metabolic benefit
Vitamin E with magnesium or omega-3 showed modest improvements in PCOS symptoms like hormone levels and inflammation.
Vitamin E + magnesium modestly helped PCOS