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Is Magnesium Good For Mental Health?

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Magnesium

Is Magnesium Good For Mental Health?

Dr. Martin says yes. In his clinic, low magnesium turned up again and again in people with anxiety, and in depression too. He calls it the relax mineral: it raises GABA, the calming messenger in the brain, and supports the adrenal glands that handle stress. He saw it as one piece of the picture, never the whole thing.

Key takeaways

  • He found low magnesium in anxiety, and in depression too.
  • Low magnesium means less GABA, so the brain does not relax.
  • Stress, acid reducers, diuretics and poor soil all drain it.
  • A blood test can miss it. Most magnesium sits in your tissue.
A grey-haired woman sitting on a sofa under a blanket, holding a mug and looking thoughtful
Whenever Dr. Martin hears magnesium, he thinks of one word: relax. Episode 1334.

Is magnesium good for mental health?

For Dr. Martin it is one of the first things to check. He spent years testing patients who came in anxious or depressed, and the same handful of deficiencies kept showing up: vitamin D, B12, and magnesium.

There's very little of it, but your brain needs magnesium. It does. It's an essential mineral for your brain to function properly.

Dr. Martin, The Doctor Is In, Episode 1128

His word for it says most of what he means.

Think of magnesium. Relax. Always remember that. Magnesium relax, it relaxes your muscles, it relaxes your brain, it relaxes your anxiety, magnesium, okay, I love it.

Dr. Martin, The Doctor Is In, Episode 1238

Magnesium and anxiety

When a patient came in with obvious anxiety, he looked for hormone imbalances, cortisol above all, and he looked for deficiencies. Low magnesium was one of the regulars, almost without exception, he says, alongside low vitamin D and low B12.

He ties it to the adrenal glands, the two small glands on top of your kidneys that respond to stress. They are built for short bursts, not years of it.

So when you get the effects of low magnesium, you can develop anxiety and fatigue, exhaustion.

Dr. Martin, The Doctor Is In, Episode 1334

Thirty years ago he wrote a book on chronic fatigue syndrome, which he saw far more in women than men. Those patients, he says, had anxiety coming out the wazoo, and poor sleep with it. For more on anxiety after 60, see anxiety in women over 60.

Magnesium and depression

He did not see anxiety and depression as two separate problems.

Anxiety, depression, same sources, okay? And same deficiencies.

Dr. Martin, The Doctor Is In, Episode 1238

In another episode he says of magnesium:

I used to see it especially in anxiety, but also in depression.

Dr. Martin, The Doctor Is In, Episode 1037

In depression he also tested cortisol every day in his office, and says it was almost always high. That ties back to magnesium through the adrenals. He covers the cortisol side in can high cortisol cause depression.

Magnesium was never his only answer. His protocol was the diet first, then cortisol, B12, vitamin D, magnesium and the gut. If you take medication for anxiety or depression, he is clear he is not telling anyone to stop it.

How magnesium calms the brain: GABA

GABA is one of the brain's calming messengers. Dr. Martin links low magnesium straight to low GABA.

And when you don't have enough magnesium, you get a decrease in gaba.

Dr. Martin, The Doctor Is In, Episode 1334

Then, he says, you do not relax and you do not calm down. In another episode he lists mood among the five things magnesium does.

And mood, big time. Because magnesium elevates your GABA and it helps your body to relax. It helps your brain to relax.

Dr. Martin, The Doctor Is In, Episode 1531

It was his go-to for children with ADD, he says, alongside DHA and pine bark. And for the brain long term, he notes magnesium helps keep calcium out of the blood vessels up there too.

Magnesium, stress, cortisol and sleep

Stress uses magnesium up, and he says we live in a world of stress that starts young. It can come from relationships, money and family, or from plastics and chemicals your body reads as stress.

We're so stressed today, and what is the stress mineral? Magnesium.

Dr. Martin, The Doctor Is In, Episode 1334

Cortisol is meant to rise in the morning to wake you up and fall to almost nothing by evening so you can sleep. When magnesium is low, he says, GABA drops and you do not settle. Some people, he says, take magnesium before bed and find it helps them sleep. See why you can't sleep after 60.

Why so many people are low in magnesium

He puts 60 to 70% of the population low, for three reasons:

  • The soil. There is very little magnesium left in it, so there is less in the food grown in it, and in what animals eat.
  • Medication. Acid reducers (PPIs) cut the stomach acid you need to absorb it. Diuretics for blood pressure strip it out.
  • Stress. The stress mineral gets used up.

He is not telling anyone to stop a prescription, just to know the side effect is there. More on why women over 60 run low in magnesium for women over 60.

Why a blood test can miss low magnesium

If your magnesium came back normal, he would not take that as the final word.

See, magnesium belongs in your tissue more than your blood.

Dr. Martin, The Doctor Is In, Episode 1334

Most of your magnesium sits in your tissues, not your blood, so a blood level is not a good indicator in his view.

Which magnesium is best, and how much

He likes two forms, citrate and bisglycinate, because the "ate" ending means the magnesium is chelated and better absorbed. Citrate also relaxes the bowel, which suits people with constipation. If citrate loosens your stool, he switches to bisglycinate. He takes both himself.

Magnesium oxide he keeps for a rub on the legs, never as a supplement. An Epsom salt bath is another way he likes to get it. On amount, he says somewhere between 500 and 1,000 milligrams a day, and loose stools are the sign you have taken more than you need. If you have kidney problems or take medication, check with your doctor before adding magnesium.

Common questions

Is magnesium good for mental health?

Dr. Martin says yes. In his clinic low magnesium showed up again and again in anxiety, and in depression too.

Can low magnesium cause anxiety?

He says the effects of low magnesium can include anxiety, fatigue and exhaustion, through the adrenal glands and lower GABA.

Does magnesium help depression?

He saw low magnesium in depression as well as anxiety, and treated it as one part of a wider plan with diet, cortisol, B12, vitamin D and the gut.

What kind of magnesium is best for anxiety?

Dr. Martin likes citrate and bisglycinate. If citrate loosens your stool, he switches people to bisglycinate.

Will a blood test show if I am low in magnesium?

Not reliably, he says. Magnesium belongs in your tissue more than your blood, so a normal blood result can miss it.

Magnesium for every day

Food comes first for Dr. Martin. If you want a daily magnesium on top, Martin Clinic's Magnesium Bisglycinate gives you 400 mg per serving of one of the two forms he likes.

Shop Magnesium Bisglycinate

60-day money-back guarantee. If you take medication or have kidney problems, check with your doctor before adding magnesium.
Dr. Martin
About the author

Dr. Martin

Host of The Doctor Is In. Formulated in clinic. Used in clinic since 1911.