Magnesium-Rich Foods to Add to Your Diet

Magnesium hasn’t gotten nearly as much attention as vitamins C or D, but it quietly powers more than 300 processes in your body every single day.¹ And the gap between what most Americans actually eat and what their bodies need is surprisingly large, with research indicating a majority of healthy adults have suboptimal levels of magnesium.²

This isn’t because magnesium is hard to find in food—it’s found in many delicious, everyday ingredients. It’s more about knowing which foods to choose.

Today we’ll look at the best food sources of magnesium, how much you need daily, what happens when you’re not getting enough, and how to tell if supplementation might be helpful.

Key Takeaways

• Magnesium is an essential mineral involved in over 300 enzymatic reactions in the body, including muscle function, nerve signaling, energy production, and bone health.¹
• The best food sources of magnesium include pumpkin seeds, dark leafy greens (spinach, Swiss chard), legumes (black beans, edamame), nuts (cashews, almonds, Brazil nuts), whole grains (brown rice, quinoa), dark chocolate and certain fish.
• Most adults need 310 mg to 420 mg of magnesium per day depending on age and sex.³
• Signs of low magnesium include fatigue, muscle cramps, difficulty sleeping, and feeling stressed or irritable.¹ While men and women may experience these similarly, there can be differences due to hormonal or physiological factors. Always speak with a healthcare provider if you have concerns.
• When diet alone isn’t enough, magnesium supplements can help.

Key Terms

• Magnesium: An essential mineral used by the body in many ways. It can’t be made on its own; it must come from food or supplements.¹
• Daily Value (DV): A reference amount set by the FDA and used on food and supplement labels to help people understand how much of a nutrient a serving provides relative to general daily needs.
• Chelated magnesium: A form of magnesium in which the mineral is bound to an amino acid, which helps the body absorb it more efficiently. Examples include magnesium glycinate.
• Bioavailability: How well and how much of a nutrient the body can absorb and use. Different forms of magnesium supplements have different bioavailability levels.

Why Magnesium Matters for Your Health

Magnesium plays many roles throughout the body, including:¹

• Energy production: Magnesium helps convert the food you eat into energy.
• Muscle and nerve function: It plays a vital role in muscle contraction, relaxation, and nerve signaling.
• Strengthens bones: Magnesium promotes calcium absorption and mineralization of bone tissues.

Magnesium is also associated with mood support as it aids in the modulation of neurotransmitters. For energy and metabeolism, all the cells in your body use adenosine triphosphate (ATP) as the energy source to power their basic functions.⁴ But ATP requires magnesium for proper function as it helps to stabilize the ATP until the cell needs it.⁵  Magnesium is also linked to better sleep and helping to maintain blood pressure and blood glucose readings already within a healthy range.₆

Read more about the benefits of magnesium for health in Magnesium Benefits and Uses.

How Much Magnesium Do You Need?

According to the National Institutes of Health (NIH), recommended daily allowances (RDAs) for magnesium are generally:³

• Adult women (19-30 years): 310 mg per day
• Adult women (over 31): 320 mg per day
• Adult men (19-30 years): 400 mg per day
• Adult men (over 31): 420 mg per day
• Pregnant women: 350-360 mg per day

These values are representative of healthy adults. Individual needs may vary based on health status, activity level, and other factors. Always consult your doctor about what’s right for you.

Signs You May Not Be Getting Enough

Low magnesium intake can show up in several ways. These include muscle cramps or spasms, fatigue or low energy, difficulty falling or staying asleep, or feeling stressed or irritable.

If you’re regularly experiencing these kinds of issues, it’s worth having a conversation with your doctor. While these symptoms can have many causes, supporting your magnesium intake through food and supplementation is a reasonable place to start.

The Best Magnesium-Rich Foods

Adjusting your diet to increase your magnesium intake won’t require drastic changes. Whether you’re plant-based, carnivorous, or somewhere in between, there’s a wide variety of food sources to suit your taste and dietary preferences. Let’s consider some of the best.

Pumpkin Seeds

Pumpkin seeds are one of the most concentrated food sources of magnesium available. One ounce (about a small handful) provides approximately 150 mg—roughly a third of a day’s needs in a single snack.³ Beyond pumpkin seeds, chia seeds are also strong magnesium sources. One ounce of chia seeds provides about 110 mg.³

Eat pumpkin seeds as a standalone snack, stir them into oatmeal or yogurt, add them to trail mix, or sprinkle them over salads. Roasted or raw, they’re an easy, versatile addition to your day. Add chia seeds to overnight oats, smoothies, or yogurt.

Dark Leafy Greens

Dark leafy greens like spinach are among the best plant-based sources of magnesium. A half-cup of cooked spinach provides around 78 mg of magnesium.³

Sauté with olive oil and garlic as a simple side dish, blend into smoothies, stir into soups and stews, or use as a base for grain bowls. The more cooked, the more concentrated the nutrients.

Legumes

Black beans and edamame are excellent magnesium sources. A half-cup of cooked black beans provides around 60 mg. Edamame (green soybeans) delivers about 50 mg per half cup.³ These are also rich in fiber and plant protein, making them an especially nutrient-dense choice.

Add to grain bowls, soups, tacos, salads, and curries. Edamame makes a satisfying snack on its own with a pinch of sea salt.

Nuts

Cashews, almonds, and Brazil nuts are particularly good sources of magnesium. One ounce of cashews provides about 74 mg. Almonds offer around 80 mg per ounce. Brazil nuts are also rich in selenium alongside their magnesium content.³

Keep a small container of mixed nuts at your desk or in your bag for a quick, satisfying snack. Nut butters (almond butter, cashew butter) are equally good sources and work well on toast, in smoothies, or as a dip for apple slices.

Peanuts and peanut butter also deserve a mention here: an ounce of peanuts provides about 48 mg of magnesium, and two tablespoons of peanut butter provides a similar amount.³

Whole Grains

Brown rice, quinoa, and oats are reliable whole-grain sources of magnesium. One cup of cooked quinoa provides around 118 mg. Brown rice provides around 84 mg per cooked cup.³ Oats provide about 63 mg per half-cup dry serving.

Replace white rice with brown rice or quinoa as a base for grain bowls. Oatmeal is an easy, magnesium-boosting breakfast—add pumpkin seeds or chia seeds on top to increase the content further.

Dark Chocolate

Dark chocolate (over 70% cacao) is a surprisingly substantial source of magnesium. One ounce provides around 72 mg.⁷ It also delivers antioxidants, iron, and supports heart health. This is one food where the higher the cacao content, the more magnesium—and the less added sugar.

Enjoy a square or two of high-quality dark chocolate as an afternoon snack or melt it and drizzle it over fruit. It pairs beautifully with almonds, another magnesium-rich food.

Fatty Fish

Salmon and halibut are good sources of magnesium alongside their well-known omega-3 essential fatty acid content. A 3 oz. serving of cooked Atlantic salmon provides approximately 26 mg of magnesium, with halibut providing a similar amount.³

Two to three servings of fatty fish per week is a widely recommended dietary goal for heart and brain health.⁸ Grilled, baked, or poached, these fish pair well with leafy greens and whole grains for a well-rounded magnesium-supportive meal.

Avocado

Avocado is a creamy, versatile source of magnesium as well as healthy monounsaturated fats and potassium. One half cup provides about 22 mg of magnesium.

Slice onto grain bowls, mash onto toast, blend into smoothies, or simply enjoy halved with a squeeze of lemon. It pairs especially well with eggs, another moderate magnesium source.

Bananas

Bananas are one of the most convenient and accessible magnesium-rich foods. One medium banana provides around 32 mg.³ They’re also a good source of potassium and vitamin B6, making them a well-rounded choice for active people.

Eat as a quick snack, blend into smoothies, slice over oatmeal, or pair with nut butter for a satisfying snack that combines magnesium from two sources at once.

Drinks High in Magnesium

Several beverages can contribute meaningfully to your magnesium intake. These include soymilk (approx. 61 mg per cup),³ cow’s milk (about 24-27 mg per cup).³ Coffee, mineral waters, and orange juice can also be good sources.

For most people, beverages are a supporting contributor rather than the primary magnesium source, but they do add up over the course of a day.

Why It’s Still Hard to Get Enough from Food Alone

Even with the best intentions, getting adequate magnesium from food alone can be challenging for many people. Modern intensive farming practices have led to mineral depletion in soils which reduces the magnesium content of crops that were historically rich sources.⁹ It’s worth noting, though, that organic foods likely contain higher magnesium content vs. those that are conventionally grown.¹⁰

This is where a quality magnesium supplement can serve as a practical safety net, not as a replacement for magnesium-rich eating, but as a reliable way to bridge the gap on days when your diet falls short.

When to Consider Magnesium Supplements

If you suspect your diet falls short of daily magnesium needs, a supplement is a sensible option. This is especially worth considering for active adults who lose magnesium through sweat, older adults whose dietary absorption may decrease with age,³ people under stress, and those following restricted diets.

When choosing a supplement, form matters. Magnesium glycinate is a chelated form that’s gentle on the digestive system and well-absorbed, making it a popular choice for those who want relaxation and sleep support.¹¹ Magnesium citrate is well-absorbed and budget-friendly,³ often recommended by health professionals for general magnesium support. Swanson’s Triple Magnesium Complex combines three forms (citrate, glycinate, and oxide) for broad-spectrum support.

The Tolerable Upper Intake Level (UL) for supplemental magnesium is 350 mg per day for adults (different from the amount that may be consumed from food).³ Taking more than this from supplements alone may cause digestive discomfort such as loose stools. Always follow label directions and speak with your doctor about the right amount for you.

Frequently Asked Questions

• How can I raise my magnesium levels quickly?
  The most effective combination is increasing magnesium-rich foods in your daily diet while adding a magnesium supplement if needed. Highly bioavailable forms of supplemental magnesium, such as magnesium glycinate or magnesium citrate, tend to raise magnesium levels more quickly than lower-bioavailability forms like magnesium oxide. Staying well hydrated also supports mineral absorption.
• Do magnesium supplements cause side effects?
  The most common side effect of magnesium supplements is loose stools or digestive discomfort, particularly with forms like magnesium citrate at higher doses or magnesium oxide.³ Chelated forms such as magnesium glycinate are generally well-tolerated and less likely to cause this effect. Taking magnesium with food can also help reduce digestive discomfort.
• Who should eat foods high in magnesium?
  Everyone can benefit from adequate magnesium intake. Certain groups may especially benefit from paying close attention to their intake: older adults, people with digestive concerns that affect nutrient absorption, those experiencing high stress, active adults and athletes, and people who eat highly processed or refined diets low in whole foods.

Increase Your Magnesium Starting Today

Including more magnesium in your diet doesn’t require a dramatic overhaul. A handful of pumpkin seeds with your morning yogurt, a grain bowl with black beans and quinoa for lunch, a square of dark chocolate in the afternoon, and some sautéed spinach with dinner can get you a long way toward your daily target.

For days when your diet falls short, a quality magnesium supplement makes it easy to fill the gap. Swanson offers a range of magnesium supplements to fit different needs and preferences, from the versatile Triple Magnesium Complex to the gentle, highly bioavailable Albion Magnesium Glycinate.

Explore all of Swanson’s magnesium supplements and start building your magnesium-rich routine.

Swanson

These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.

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