Deficiency/Heart/Sleep

Magnesium

Essential mineral that corrects low intake and may support sleep and blood pressure in adults who do not get enough from food.

Magnesium

Magnesium

92
score
A
evidence
Caution
risk
Quick Take

High-return if your diet is low in magnesium; choose glycinate or citrate, not oxide.

Magnesium is an essential mineral found in pumpkin seeds, nuts, beans, leafy greens, and whole grains. It acts as a cofactor for hundreds of enzymes involved in ATP production, nerve signaling, muscle relaxation, and glucose handling. Best-supported uses are correcting low magnesium status, modestly lowering blood pressure, and helping sleep in some adults. It tends to help most when dietary intake is low or losses are increased.

Proven Benefits

01
Corrects magnesium deficiency
02
Lowers blood pressure modestly
03
Improves sleep quality
04
May improve endothelial function
05
May reduce nighttime leg cramps
06
May support normal heart rhythm

Protocol

Amount
200-350 mg elemental magnesium
Frequency
Once daily or split into 2 doses
When
With food if GI-sensitive; evening can help if your goal is sleep, but consistency matters more than timing.

Onset Time

1-2 weeks for sleep/cramps, 4-12 weeks for BP or glucose changes

Who Should Consider

Adults eating few nuts, legumes, greens, or whole grains
Older adults
People using proton pump inhibitors long term
Adults with mild high blood pressure
People with poor sleep quality
Those with low magnesium or related symptoms

Food Sources

  • Pumpkin seeds (~150 mg per 28 g)
  • Almonds (~80 mg per 28 g)
  • Cashews (~75 mg per 28 g)
  • Cooked spinach (~75 mg per 1/2 cup)
  • Black beans (~60 mg per 1/2 cup)
  • Dark chocolate 70-85% (~65 mg per 28 g)

How It Works

Magnesium stabilizes ATP and helps enzymes that control energy production, vitamin D activation, and glucose metabolism. It also regulates calcium flow in nerve and muscle cells, which can reduce neuromuscular excitability, support vascular relaxation, and improve function when magnesium status is low.

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