By Poppa Ben | poppaben.com
Magnesium is one of those minerals I wish more people paid attention to. It helps your body make energy, keeps your muscles and nerves working the way they should, and supports healthy bones. The good news is that plenty of ordinary foods can help you get enough. [1]
In this article, I’ll walk you through what magnesium does, where to find it in food, how much you need, and what to know before reaching for a supplement. You don’t have to overhaul your diet overnight. A little knowledge about what your meals already give you goes a long way.
What magnesium does in your body
Magnesium takes part in more than 300 biochemical reactions. Its normal roles include: [1]
• Helping produce energy and protein.
• Supporting normal muscle and nerve function.
• Helping maintain a normal heartbeat.
• Contributing to healthy bones.
• Helping regulate blood sugar.
The goal is to meet your needs. More magnesium does not necessarily mean more energy or better health.
A story from my practice
I worked with a client who was dealing with anxiety and taking several medications. Alongside our sessions, the client began taking Magnesium Breakthrough, and I saw them find relief from their anxiety.
That experience stayed with me. It is one person’s story and cannot tell us what caused the improvement. Research on magnesium supplements for anxiety is still limited, but my experience is one reason I think it is worth a conversation with your health professional. [2]
A note about the amount: the manufacturer currently lists 500 mg of elemental magnesium per two capsules. That is above the usual adult upper limit of 350 mg a day from supplements and medicines. Discuss that amount with your healthcare professional before taking it. [4, 11]
If you take medication for anxiety, don’t stop or change it on your own. Talk with your prescriber, and ask your pharmacist whether magnesium fits with everything else you take.
Magnesium and sleep
You’ve probably seen magnesium advertised as a sleep aid. Some studies suggest it may help, but the research is mixed and limited. If sleep is an ongoing struggle, raise it with your health professional and look at your evening routine and what might be disturbing your rest. [3]
See my article about the benefits of sleep here.
Low intake and deficiency are different
NIH cites a 2013-2016 survey analysis showing that 48% of Americans of all ages consumed less magnesium from food and beverages than their estimated average requirement. That measures dietary intake; it does not establish how many people have magnesium deficiency. [4]
Some people have a higher risk of low magnesium, including older adults and people with certain digestive conditions, type 2 diabetes, or alcohol dependence. Long-term use of some acid-reducing medicines and certain diuretics can also affect magnesium levels. [5]
Symptoms and testing
Magnesium deficiency can cause appetite loss, nausea, fatigue, or weakness. More severe deficiency can involve muscle cramps, tingling, or abnormal heart rhythms. These symptoms have other possible causes, so a symptom list cannot tell you whether magnesium is the answer. [6]
A blood test measures magnesium in your blood, but most of your magnesium is stored in tissues. A normal result doesn’t completely rule out low stores, and it doesn’t establish a hidden deficiency either. Your clinician can weigh the result alongside your diet, symptoms, medicines, and medical history. [6]
New or recurring palpitations and persistent unexplained symptoms deserve medical evaluation.
My experience with energy work
In my Natural Bioenergetics work, I have sometimes noticed people respond better to nutritional support after energy work. I have interpreted this as the body making better use of what it is given. This is my personal interpretation; I have not measured whether nutrient absorption increased.
I discuss this approach further in What Is Natural Bioenergetics? A Beginner’s Guide to the Approach and in Introduction to Energy Work—Physical, Emotional, and Spiritual Wellness.
I see energy work as a complementary approach. If you suspect a problem absorbing nutrients, seek medical assessment for the cause.
Foods that provide magnesium
Seeds, nuts, beans, leafy greens, and whole grains are useful sources. These amounts are approximate. [4]
| Food | Serving | Magnesium |
| Roasted pumpkin seeds | 1 ounce | 156 mg |
| Chia seeds | 1 ounce | 111 mg |
| Dry roasted almonds | 1 ounce | 80 mg |
| Dry roasted cashews | 1 ounce | 74 mg |
| Cooked black beans | 1/2 cup | 60 mg |
| Cooked brown rice | 1/2 cup | 42 mg |
Here is one simple way to spread magnesium-containing foods through the day:
• Breakfast: Chia pudding made with 1 ounce of chia seeds.
• Lunch: A bean bowl or soup containing 1/2 cup of cooked black beans.
• Afternoon snack: 1 ounce of almonds.
• Dinner: 1/2 cup of cooked brown rice alongside your main meal.
Those four portions provide about 293 mg of magnesium, before counting the other foods you eat. Use the portions listed; an unmeasured handful or bowl can vary quite a bit. [4]
There is plenty of room to make this your own. Swap in foods you enjoy from the table, and use their listed amounts to see how they contribute.
How much magnesium adults need
The U.S. recommended daily amounts below refer to total intake from all sources, including food. They are not instructions to take that amount as a supplement. [1]
| Adult group | Daily magnesium |
| Men ages 19 to 30 | 400 mg |
| Men ages 31 and older | 420 mg |
| Women ages 19 to 30 | 310 mg |
| Women ages 31 and older | 320 mg |
Pregnancy changes magnesium needs, and children have different recommendations. Ask your health professional about the appropriate amount for those situations. [1]
Choosing a magnesium supplement
A supplement may help fill a dietary gap or serve a specific medical purpose. Choose according to your needs, the elemental magnesium amount, and how your digestive system tolerates it.
| Form | What to know |
| Magnesium citrate | Human studies have found better absorption than oxide. It can also have a laxative effect. [7, 8] |
| Magnesium oxide | Generally less well absorbed than citrate. Sometimes used in migraine prevention plans; may cause diarrhea. [7, 9] |
| Magnesium glycinate or bisglycinate | Magnesium combined with glycine. It is often discussed for anxiety or sleep, but these uses are not established treatments for everyone. [2, 3] |
| Magnesium chloride | Available as an oral supplement as well as in topical products. Oral absorption evidence should not be assumed to apply to baths or sprays. [5, 10] |
Magnesium citrate sold as a laxative has a different purpose from a routine nutritional supplement. Follow that product’s directions and seek advice if constipation persists or you need laxatives regularly. [8]
Products containing malate, taurate, or L-threonate may be promoted for energy, heart health, or memory. Before paying more for a particular promise, ask what human research supports that product and whether it matches your situation.
Baths and sprays should not be relied on to correct magnesium deficiency. Evidence for meaningful magnesium absorption through the skin remains limited. [10]
Read the elemental magnesium amount
Check the Supplement Facts panel for elemental magnesium: the magnesium itself, rather than the weight of the whole compound. If 200 mg is listed per two capsules, each capsule provides 100 mg. [4]
Supplement limits and safety
For adults, the U.S. upper limit is 350 mg a day from magnesium supplements and medicines combined, unless a health professional advises otherwise. Magnesium naturally present in food does not count toward this limit. It is a safety ceiling, not a target. [4]
Count magnesium in multivitamins, separate supplements, and magnesium-containing antacids or laxatives. Taking too much can cause diarrhea, nausea, and abdominal cramps. Extremely high amounts can cause serious toxicity. [5]
If you have kidney disease, obtain medical advice before using magnesium supplements or medicines. Impaired kidney function can allow magnesium to build up to dangerous levels. [6]
Magnesium can interfere with the absorption of certain antibiotics and osteoporosis medicines. Other medicines can change magnesium levels. Tell your pharmacist everything you take and ask about the correct spacing for your specific medicine. [5]
Magnesium and migraine prevention
Magnesium may help prevent migraines in some people. The American Migraine Foundation discusses it as an option to consider with a doctor. Migraine regimens may exceed the usual supplement limit, making professional guidance important when choosing the dose and form. [9]
A practical place to start
Pick one or two magnesium-rich foods you enjoy and make them a regular part of your week. A handful of almonds or some beans added to a meal is an easy start. If you still think you’re falling short, or want to try a supplement for a specific concern, talk it over with your health professional.
Stay well,
Poppa Ben
Health disclaimer: This article is for general education and does not replace personal medical advice, diagnosis, or treatment. Consult a qualified health professional before starting a supplement, especially if you have kidney disease, take medicines, are pregnant, or are breastfeeding.
Sources
Sources checked October 12 and 13 2026. Numbers in the article refer to these sources.
1. MedlinePlus. Magnesium in diet
2. Cleveland Clinic. Magnesium for Anxiety Does It Help
3. NIH NCCIH. Sleep Disorders and Complementary Health Approaches
4. NIH Office of Dietary Supplements. Magnesium Fact Sheet for Health Professionals
5. NIH Office of Dietary Supplements. Magnesium Fact Sheet for Consumers
6. MedlinePlus. Magnesium Blood Test
7. Lindberg and colleagues. Magnesium bioavailability from magnesium citrate and magnesium oxide 1990
8. MedlinePlus. Magnesium Citrate
9. American Migraine Foundation. Magnesium and Migraine
10. Grober and colleagues. Myth or Reality Transdermal Magnesium 2017
11. BIOptimizers. Magnesium Breakthrough product serving information
Ben — known to his clients and readers as Poppa Ben — is a certified practitioner of Natural Bioenergetics (formerly Health Kinesiology) with decades of hands-on experience helping people restore their energy and vitality. He writes about natural health, nutrition, herbs, energy work, and the occasional skin-healthy recipe. His approach always comes with the same reminder: your body wants to be in balance, and sometimes it just needs someone to listen.