A sample of the earth metal Magnesium appears like a glossy, metal nugget.

How magnesium affects your sleep and anxiety

The essential mineral is important for the body—but it doesn’t work miracles. Here’s what the experts say about magnesium’s powers.

This is a sample of the alkaline earth metal magnesium. But you can't consume it in this form. For magnesium to be absorbed, it must be consumed in forms bonded to other substances. That said, magnesium supplements may not curb anxiety or deliver the deep sleep you need.
Photograph by Science Photo Library
This content is Subscriber-Exclusive
You must have a National Geographic subscription to explore this article.

Read This Next

Did this mysterious human relative bury its dead?
This new birth control for cats doesn't require surgery
How the Zoot Suit Riots changed America

Go Further

Subscriber Exclusive Content

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet

Why are people so dang obsessed with Mars?

How viruses shape our world

The era of greyhound racing in the U.S. is coming to an end

See how people have imagined life on Mars through history

See how NASA’s new Mars rover will explore the red planet