#087 The Science of Magnesium and Its Role in Aging and Disease | Dr. Rhonda Patrick

Rhonda Patrick

Mar 19, 2024

Episode description

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In this solo episode, I'm taking an in-depth look at magnesium – a critical yet frequently underestimated mineral in our health. Magnesium stands tall among vital nutrients for its significant role in multiple aspects of human physiology. During this podcast, we'll delve into the widespread negative health effects caused by a lack of magnesium and discuss why increasing your magnesium intake might be key to achieving optimal health.

In this episode, I discuss:

  • (00:00) Introduction

  • (04:27) Why the effects of magnesium are far-reaching

  • (06:47) Why athletes need at least 10-20% more magnesium than the RDA

  • (10:54) Why magnesium deficiency & insufficiency are common

  • (12:19) How to determine if you're getting enough magnesium

  • (15:14) Magnesium supplements

  • (18:17) Is magnesium threonate better at crossing the blood-brain barrier?

  • (25:08) Why magnesium threonate shouldn't count toward your RDA goal

  • (26:04) What magnesium supplement do I take?

  • (26:36) The effect of stress on magnesium balance

  • (30:15) Why the energy demands of workouts affect magnesium balance

  • (32:56) Does magnesium supplementation improve sleep?

  • (34:04) Why trials in the field of nutrition are often misleading

  • (37:26) Does higher magnesium intake improve cognition?

  • (39:07) Does magnesium have a role in preventing Alzheimer's disease?

  • (42:09) The effect of creatine on the brain (

Episode description

Download the 9-Page "Cognitive Enhancement Blueprint"

Discover my premium podcast, The Aliquot

Join over 300,000 people and sign up for my newsletter

Become a FoundMyFitness premium member to get access to exclusive episodes, emails, live Q+A’s with Rhonda and more

In this solo episode, I'm taking an in-depth look at magnesium – a critical yet frequently underestimated mineral in our health. Magnesium stands tall among vital nutrients for its significant role in multiple aspects of human physiology. During this podcast, we'll delve into the widespread negative health effects caused by a lack of magnesium and discuss why increasing your magnesium intake might be key to achieving optimal health.

In this episode, I discuss:

  • (00:00) Introduction

  • (04:27) Why the effects of magnesium are far-reaching

  • (06:47) Why athletes need at least 10-20% more magnesium than the RDA

  • (10:54) Why magnesium deficiency & insufficiency are common

  • (12:19) How to determine if you're getting enough magnesium

  • (15:14) Magnesium supplements

  • (18:17) Is magnesium threonate better at crossing the blood-brain barrier?

  • (25:08) Why magnesium threonate shouldn't count toward your RDA goal

  • (26:04) What magnesium supplement do I take?

  • (26:36) The effect of stress on magnesium balance

  • (30:15) Why the energy demands of workouts affect magnesium balance

  • (32:56) Does magnesium supplementation improve sleep?

  • (34:04) Why trials in the field of nutrition are often misleading

  • (37:26) Does higher magnesium intake improve cognition?

  • (39:07) Does magnesium have a role in preventing Alzheimer's disease?

  • (42:09) The effect of creatine on the brain (

Mindsip insights from this episode:

Understand variability in nutrition studies to interpret results

Nutritional trials often yield mixed results because, unlike drug trials, participants start with varying baseline levels of the nutrient, which can mask the supplement's true effect.

Manage stress to preserve magnesium levels

Mental and physical stress cause the body to mobilize and then excrete magnesium through urination, leading to a gradual depletion of the body's stores.

Consider Magnesium OM and Magnesium Glycinate for optimal supplementation

The speaker personally takes a supplement with multiple forms of magnesium, mentioning Magnesium OM by Moon Juice and Magnesium Glycinate by Pure Encapsulations.

Reevaluate magnesium threonate for daily magnesium needs

Magnesium threonate is not the best option for meeting daily magnesium needs as it contains a very low amount of elemental magnesium and its brain health benefits are not well-established in humans.

Enhance magnesium bioavailability through heating and sprouting

You can increase magnesium bioavailability from plant sources like oats, leafy greens, and legumes by heating, sprouting, or germinating them to activate phytase enzymes.

Prioritize magnesium intake to support long-term health functions

The triage theory of aging suggests that with low magnesium intake, the body sacrifices long-term health functions like DNA repair for short-term survival needs.

Ensure adequate magnesium for effective vitamin D utilization

Inadequate magnesium intake may hinder the body's ability to utilize vitamin D effectively, even if vitamin D intake from supplements is sufficient.

Increase magnesium intake to reduce pancreatic cancer risk

In one observational study, every 100-milligram-per-day decrease in magnesium intake was associated with a 24% increase in pancreatic cancer incidence.

Take 600 milligrams of magnesium daily to reduce migraine frequency

Randomized controlled trials suggest a dose of around 600 milligrams of magnesium per day, taken in divided doses, can effectively reduce the frequency and intensity of migraines.

Increase magnesium intake to boost brain volume and reduce aging effects

An observational study found that a higher dietary magnesium intake of around 550 milligrams per day correlated with larger brain volumes, equivalent to about one year of reduced brain aging.

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