Magnesium, answered for the 50+ generation.
Twenty evidence-based answers to the questions our community asks most — sleep, cramps, statins, blood pressure, menopause, medication interactions and more.
- Q01
What is the best magnesium for sleep over 50?
Magnesium glycinate (also called bisglycinate) is widely considered the best magnesium for sleep after 50. It is well absorbed, gentle on the stomach, and the glycine itself has a calming effect on the nervous system. Take 200–400 mg of elemental magnesium 30–60 minutes before bed.
Read the answer → - Q02
Magnesium glycinate vs citrate: which is better?
Choose magnesium glycinate for sleep, stress and a sensitive gut. Choose magnesium citrate when you also want help with constipation or you simply want a well-absorbed all-rounder. Both have around 25–30% bioavailability, far better than oxide.
Read the answer → - Q03
Does magnesium help leg cramps after 50?
Magnesium helps leg cramps most reliably when low magnesium status, statin use, or diuretics are part of the picture. Magnesium glycinate or citrate at 300–400 mg in the evening is the standard protocol, with effects typically felt within 2–3 weeks.
Read the answer → - Q04
Should I take magnesium with statins?
Yes — most people on statins benefit from 300–400 mg of magnesium glycinate daily, often alongside CoQ10. Statins do not directly remove magnesium, but the muscle pain and cramps they cause are usually worse in people with low magnesium status.
Read the answer → - Q05
Does magnesium help restless legs syndrome?
Magnesium glycinate at 300–400 mg taken 1–2 hours before bed reduces restless legs symptoms in most people with mild to moderate RLS, especially when iron status is also addressed.
Read the answer → - Q06
How much magnesium per day after 50?
The recommended daily intake is 420 mg for men over 50 and 320 mg for women over 50. Diet typically delivers 200–250 mg, so most people benefit from a 200–300 mg elemental supplement.
Read the answer → - Q07
Magnesium deficiency symptoms in women over 50
The most common signs in women over 50 are fatigue, night-time leg cramps, heart palpitations, anxiety, poor sleep, migraines, low mood, and brittle nails. Symptoms often improve within 4–8 weeks of correcting intake.
Read the answer → - Q08
Does magnesium lower blood pressure?
Yes — meta-analyses show 300–500 mg of elemental magnesium per day lowers systolic blood pressure by 2–4 mmHg and diastolic by 1–2 mmHg, with the largest effect in people with deficiency, diabetes, or already on BP medication.
Read the answer → - Q09
Should I take magnesium with vitamin D?
Yes. Every step of vitamin D activation in the body — from liver to kidney to tissues — requires magnesium as a cofactor. Taking high-dose vitamin D without adequate magnesium can deplete magnesium further and blunt D's benefits.
Read the answer → - Q10
Does magnesium help anxiety and stress?
Yes — multiple trials show magnesium glycinate at 300 mg/day reduces mild to moderate anxiety scores within 2–6 weeks. It modulates the HPA stress axis, supports GABA signalling, and lowers cortisol reactivity.
Read the answer → - Q11
Does magnesium prevent migraines?
Yes — the American Headache Society rates magnesium as 'probably effective' (Level B) for migraine prevention. Standard protocol is 400–600 mg of elemental magnesium citrate or glycinate daily, with effects typically seen after 8–12 weeks.
Read the answer → - Q12
Is magnesium good for type 2 diabetes?
Yes — meta-analyses show 250–450 mg of elemental magnesium per day improves fasting glucose, insulin sensitivity, and HbA1c by 0.3–0.4% in people with type 2 diabetes or prediabetes. Up to 48% of type 2 diabetics are magnesium-deficient.
Read the answer → - Q13
What is the best time to take magnesium?
Take magnesium with food to maximise absorption. For sleep, anxiety, and cramps: take glycinate 30–60 minutes before bed. For energy and blood sugar: take citrate or malate with breakfast. For doses over 400 mg: always split.
Read the answer → - Q14
Does magnesium help bone health and osteoporosis?
Yes — 60% of the body's magnesium is stored in bone. Higher dietary and supplemental magnesium intake is associated with greater bone mineral density and lower fracture risk, especially when paired with vitamin D, K2, and adequate (not excess) calcium.
Read the answer → - Q15
Can magnesium help heart palpitations?
Yes — when palpitations are driven by low magnesium (common with diuretics, PPIs, or alcohol), 300–400 mg of magnesium taurate or glycinate daily often reduces them within 2–4 weeks. New, frequent, or symptomatic palpitations should always be evaluated by a doctor first.
Read the answer → - Q16
Magnesium and thyroid function: what's the link?
Magnesium is required for the conversion of T4 to active T3 and for normal TSH signalling. Some studies show lower thyroid antibodies with adequate magnesium intake. If you take levothyroxine, separate it from magnesium by at least 4 hours.
Read the answer → - Q17
Is magnesium good for menopause symptoms?
Yes — magnesium glycinate at 300–400 mg/day is one of the most useful single supplements in menopause. It improves sleep, reduces anxiety and palpitations, helps with hot flushes for some women, and protects bone density alongside vitamin D and K2.
Read the answer → - Q18
Does magnesium help constipation?
Yes — magnesium citrate at 300–600 mg of elemental magnesium per day reliably relieves chronic constipation by drawing water into the bowel and increasing motility. It is one of the safest long-term options for older adults.
Read the answer → - Q19
What are the signs of too much magnesium?
Loose stools are the first and most reliable sign you are taking too much magnesium from supplements. Nausea, flushing, and low blood pressure can follow at very high doses. True toxicity is rare in healthy adults — the kidneys excrete the excess.
Read the answer → - Q20
What medications interact with magnesium?
Magnesium binds several oral medications and reduces their absorption. The fix is timing: separate magnesium from levothyroxine, bisphosphonates, tetracycline/quinolone antibiotics, and certain HIV drugs by at least 4 hours.
Read the answer → - Q21
Creatine after 50: does it still work, and is it safe?
Yes. Creatine monohydrate is one of the most extensively studied nutrients in the world, and the evidence for adults over 50 is unusually strong: it supports strength, functional mobility and cognitive performance when combined with regular movement. The EU-authorised claim is based on 3 g per day.
Read the answer →