Categories: Minerals

10 benefits of magnesium and side effects

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Discover the 10 shocking health benefits of magnesium and side effects.

Magnesium is involved in more than 300 biochemical reactions essential for the proper functioning of our body.

This mineral salt is found mainly in bones and teeth but also in muscles, liver, and soft tissues.

It is therefore essential for healthy teeth, the formation of good bones, and muscle reactions, especially after exercise.

Helping to fight against fatigue,  magnesium is a significant source of energy for athletes.

10 shocking health benefits of magnesium


Magnesium is also thought to play a role in women in relieving pre-menstrual pain.

The body does not itself produce this essential mineral for our body, which is why it is important to consume it regularly.

Magnesium is the fourth most abundant mineral in the human body.

It performs several important functions in the health of our body and brain.

Here are 10 health benefits of magnesium that are supported by scientific research.

1. Aid biochemical reactions in your body

Magnesium is a mineral found in the land, sea, plants, animals, and humans.


About 60% of magnesium in the body is found in bones, while the rest is found in muscles, soft tissues, and fluids, including blood ( 1 ).

Every cell in your body contains it and needs it to function.

One of the main functions of magnesium is acting as a cofactor or “helper molecule” in the biochemical reactions carried out continuously by enzymes.

2. Benefits of magnesium for  exercise performance

Magnesium also plays a role in exercise performance.

During exercise, we may need 10-20% more magnesium than when we are resting, depending on activity ( 2 ).

Magnesium helps move blood sugar out of the muscles and flush lactic acid, which can build up in the muscles during exercise and cause pain ( 3 ).


Studies have shown that supplements can increase the physical performance of athletes, the elderly, and people with chronic diseases.

3. Benefits of magnesium for  depression

Magnesium plays a critical role in brain function and mood, and low levels are linked to an increased risk of depression ( 4 ).

An analysis of more than 8,800 people found that people under 65 with the lowest intake had a 22% increased risk of depression ( 5 ).

4.  Benefits of magnesium for  diabetes

Magnesium also has beneficial effects against type 2 diabetes.


About 48% of diabetics are believed to have low levels of magnesium in their blood.

This can affect insulin’s ability to keep blood sugar levels under control ( 6 ).

5. Benefits of magnesium for  blood pressure

Studies show that magnesium supplementation can lower blood pressure ( 7 ).

In one study, people who took 450 mg per day experienced a significant decrease in systolic and diastolic blood pressure ( 8 ).

6. Magnesium has anti-inflammatory effects

Low magnesium intake is linked to chronic inflammation, which is one of the drivers of aging, obesity, and chronic diseases ( 9 ).

7. Benefits of magnesium for  migraines

Migraines are painful and debilitating. Nausea, vomiting, and sensitivity to light and noise occur often.


Some researchers believe that people with migraines are more likely than others to be deficient in magnesium ( 10 ).

8. Magnesium reduces insulin resistance

Insulin resistance is one of the main causes of metabolic syndrome and type 2 diabetes.

It is characterized by a deterioration in the ability of muscle cells and the liver to properly absorb sugar from the blood.

Magnesium plays a crucial role in this process, and many people with metabolic syndrome are deficient ( 11 ).

9. Magnesium improves PMS symptoms

Premenstrual syndrome (PMS) is one of the most common disorders among women of childbearing age.

Its symptoms include water retention, abdominal cramps, tiredness, and irritability.


Interestingly, magnesium has been shown to improve mood in women with PMS, and it can also reduce water retention and other symptoms.

10. Magnesium is safe and widely available

Magnesium is essential for good health. The recommended daily intake is 400-420 mg per day for men and 310-320 mg per day for women. It can be obtained from food and supplements.

Getting enough magnesium is essential for good health. Make sure you eat enough magnesium-rich foods or take a supplement if you can’t get enough from your diet alone.

Without the necessary amount of this mineral, your body simply cannot function optimally.

Risk of magnesium deficiency

In recent years, magnesium intake has decreased and it is estimated that they are insufficient in 75% of French people.

This is particularly linked to our sometimes intense life rhythms and the loss of nutrients from our food.

Unfortunately, without a healthy lifestyle, magnesium deficiency is systematic.


How do you know when you are low on magnesium?

Only a blood test to check that your body has a magnesium deficiency. Nevertheless, some physical symptoms and signs can be felt:



difficulty falling asleep,


muscle cramps,


spontaneous tremors of the lip or eyelids, etc.

In times of stress, magnesium helps reduce fatigue and therefore stress.


Conversely, a magnesium deficiency eases stress.

Stress secreting norepinephrine, drives magnesium out of cells in favor of calcium, the latter becoming too present.

The lack of magnesium in the cells generates fatigue which in turn increases the level of stress.

While a balanced diet could be sufficient to meet the needs of a non-athletic or non-stressed person, stressors or sports practice increase the need for magnesium beyond the amounts normally recommended.


A greater intake of magnesium is then necessary that only supplementation can provide you.

Sources of magnesium

Let’s see together what are the main sources of magnesium in our diet.

Dark chocolate and cocoa

Sometimes, to relieve ourselves of falling for a square of chocolate, we hear “take dark chocolate, it’s rich in magnesium”.

Well, yes, dark chocolate is not only a great antioxidant, it is also a good source of magnesium.

However, we prefer cocoa powder to a chocolate bar because the latter is generally rich in saturated fat (cocoa butter).

In addition, cocoa provides a greater contribution: 100g of a plate of dark chocolate will provide 110mg of magnesium while 100g of cocoa powder will provide 410mg of magnesium.

But do not hesitate to treat yourself with a square of dark chocolate at least 70% cocoa from time to time!


Seeds and oilseeds

Seeds and oilseeds are renowned for their many benefits and nutritional benefits.

Rich in fiber and omega 3, we do not hesitate to consume a handful daily. They are also an excellent source of magnesium.

Some of the richest in magnesium are squash seeds, flax seeds, pumpkin seeds, sunflower seeds, peanuts, almonds, hazelnuts, cashews, and Brazil nuts. 35g of these provide an average of 80 to 90mg of magnesium.

Quinoa (or at least its seeds) is also an excellent source of magnesium in addition to being a food with important nutritional qualities thanks to its high content of iron, protein, zinc, and vitamin B.


Legumes, or pulses, are foods to favor in our diet. They are rich in protein, fiber, carbohydrates, and minerals. They have a low glycemic index.

Pulses such as beans, chickpeas, and lentils provide the energy necessary to stay in shape and limit cravings.


In addition, they are often inexpensive foods that can be stored for a long time.

In terms of magnesium intake, 200g of dried beans provide 100 to 120mg of magnesium.

A 200g serving of lentils provides the body with 75mg of magnesium.

Shellfish and seafood

If seafood and shellfish are grouped here, it is above all that a shellfish from the sea is of particular interest to us.

Periwinkle happens to be an exceptional source of magnesium. 100g of periwinkle (approximately 80 marine snails) covers all of the daily needs.

As for seafood, prawns, squid, mussels, clams, and cockles are not to be outdone.


On the land side, Burgundy snails are also rich in mineral salt since they provide 255 mg / 100g of magnesium.

Fatty fish

While fatty fish are known to be an excellent source of polyunsaturated fatty acids (omega 3), they are also an excellent source of magnesium.

Small fatty fish (anchovies, mackerel, sardines) should be favored over large fish (tuna and salmon) to avoid ingesting large doses of heavy metals.

2 mackerel will provide 18% of the daily intake for a man and 24% for a woman.

Fruits and vegetables rich in magnesium

The banana and its “dried fruit” version of the dried banana are an excellent source of magnesium.

For 100g of magnesium, we will have a contribution of 35mg of magnesium.


However, we will be careful with its consumption because it is very caloric.

Like dried bananas, some dried fruits are a source of magnesium: figs, dates, or apricots.

Spinach is rich in iron, vitamins, and minerals. 100g of boiled spinach provides 80mg of magnesium.

Be careful not to cook them too long, they will lose their nutritional quality.

If the avocado is known to be rich in potassium, vitamins B, K and to be a source of omega 3, it is also excellent for providing magnesium.

Eating an avocado provides around 58mg of magnesium. Avocado is an essential food for a healthy diet.


Whole grains

Magnesium is found in the bran, the outer covering of the grains of cereals which are then called “complete”.

This is why we prefer products made from whole grains and unrefined:

wholemeal bread

wholemeal pasta


oat bran


soy flour

Cereals containing gluten should be avoided and preferably organic cereals are taken.

To help you increase your magnesium intake through your diet, at Nutripure, we have created our granolas by combining raw foods that naturally contain a lot of magnesium such as almonds or pre-sprouted buckwheat.

Food supplements to take

Even if you eat a balanced diet, your daily rhythm of life, stress, or intensive exercise may force you to supplement yourself with magnesium.

There are many supplements containing magnesium, but not all are created equal.

We will favor those which will have the best bioavailability.

Magnesium oxide is regularly found in the composition of a food supplement.


This salt is rich in magnesium but its bioavailability is low and may have a laxative effect.

This is also the case for marine magnesium, which although fashionable, is of fairly low quality.

Nutripure offers magnesium with the best possible bioavailability: a  magnesium bisglycinate (a form of magnesium combined with glycine, an essential amino acid) coupled with taurine, an amino acid that facilitates the entry of magnesium into the cell, and vitamin B6, a vitamin supporting energy metabolism.


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