Evidence-based nutrition, in plain English — every entry sourced from clinical research.

Magnesium is among the most common shortfall nutrients in modern diets, since refining strips it from grains. It is concentrated in seeds, nuts, dark chocolate and legumes, and is involved in everything from energy production to maintaining a steady heartbeat.

What is Magnesium?

Magnesium is a dietary mineral that plays a critical role in powering hundreds of enzyme reactions, muscle and nerve function, and bone structure. While many general diets overlook it, maintaining optimal levels of Magnesium is frequently tracked by people working to optimize their Blood pressure.

Top Foods High in Magnesium

A data-driven breakdown of the foods with the highest concentration of Magnesium per 100 g.

Highest dietary sources of Magnesium, per 100 g edible portion
FoodMagnesium% DV
Pumpkin Seeds499.7 mg119%
Flaxseed372.1 mg88.6%
Sesame Seeds351 mg83.6%
Chia Seeds326.3 mg77.7%
Sunflower Seeds301.9 mg71.9%
Almonds251.1 mg59.8%
Cashews250.6 mg59.7%
Dark Chocolate (70–85%)228 mg54.3%
Turmeric208 mg49.5%
Peanut Butter192.6 mg45.9%
Black Beans180 mg42.9%
Buckwheat167.4 mg39.9%
Quinoa163.8 mg39%
Hazelnuts155.8 mg37.1%
Walnuts142.4 mg33.9%

How Magnesium Impacts Blood pressure

Research links diets rich in Magnesium to changes in Blood pressure. Diets naturally abundant in this compound often support lower Blood pressure markers by relaxing vascular smooth muscle and acting as a natural calcium antagonist, which supports healthy blood pressure.

Encyclopedia Insight: For maximum absorption, pair Magnesium-rich foods with vitamin D, which works alongside magnesium, and whole foods rather than refined grains where most magnesium is lost to optimize bioavailability.

Scientific references & clinical evidence

This guide is built on peer-reviewed research — verify the primary sources below.

  1. Hypertension (Dallas, Tex. : 1979) (2016). “Effects of Magnesium Supplementation on Blood Pressure: A Meta-Analysis of Randomized Double-Blind Placebo-Controlled Trials”. PubMed / source ↗
  2. Hypertension (Dallas, Tex. : 1979) (2025). “Magnesium Supplementation and Blood Pressure: A Systematic Review and Meta-Analysis of Randomized Controlled Trials”. PubMed / source ↗

Written by the Nutrition Encyclopedia team · medically reviewed by Dr. Sunaina Tariq, MBBS

Last updated 22 June 2026

Nutrition values are approximations compiled from public food-composition databases (USDA FoodData Central) and are provided for educational purposes only — not medical advice.

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