Uses for Epsom Salt and Its Health Benefits

What’s Epsom Salt

Epsom salt, also known as “bath salt,” is made up of a compound called magnesium sulfate. The name “Epsom” comes from its origin of discovery in natural springs in the town of Epsom, England. The compound is believed to have many health benefits, almost all of which are attributed to the magnesium component.


Magnesium is a required mineral in the body used in over 300 enzymatic reactions that benefit both the heart and the brain, as well as other systems. Most people do not get enough of this mineral.

Even a healthy diet can fall short of the recommended dose because of naturally occurring inhibitors which prevent absorption. Examples of inhibitors are phytates and oxalates. These are also known as anti-nutrients because they can decrease the absorption of magnesium, calcium, and iron into the bloodstream. Some people believe that magnesium is better absorbed through the skin, but there is only one small study to support this theory.

Health Benefits of Epsom Salt

There are several proposed health benefits of taking Epsom salt baths including:

  • Better Sleep and Relaxation: Magnesium helps the body produce neurotransmitters and hormones, such as melatonin, that promote sleep and relaxation.
  • Exercise Performance and Recovery: Adequate magnesium levels encourage the use of glucose and lactic acid in the body. Some claim it helps with recovery, repair, and performance but the information is anecdotal.
  • Reduced Pain and Swelling: Small studies suggest that those with chronic pain from conditions such as arthritis and fibromyalgia are often deficient in magnesium and benefit from supplementation.

How to Use Epsom Salt

  • Orally: Epsom salt can be taken by mouth as a laxative agent or can be dissolved in bath water. Consuming it may lead to unpleasant side effects such as gas, bloating, diarrhea, or an upset stomach. In extreme cases, magnesium overdose can lead to heart palpitations, coma, paralysis, and death. It’s important to discuss your dose with your doctor and never exceed the recommendations of your doctor and/or the product’s package.
  • In a Bath: To make an Epsom salt bath, fill up the tub with warm water and add two cups of salt. Swirl around the water to let it dissolve before getting in. It is unclear if Epsom salt baths will dramatically increase your blood levels of magnesium, so monitor your time in the tub and separate your baths from times you take supplements.

Epsom salt is generally safe to use and may have many potential benefits, primarily when used as a bath salt. Although many of the benefits are anecdotal, they may be worth trying out! As with any supplement, make sure to check with your doctor before making any changes.