Epsom salt, chemically known as magnesium sulfate, is a naturally occurring compound composed of magnesium, sulfur, and oxygen. It is commonly used for various health and wellness purposes, though scientific evidence supporting some claims is limited.
What Epsom Salt Does
- Muscle relaxation and pain relief : Epsom salt baths are widely used to relax muscles and relieve pain, including muscle cramps, soreness, and tension in areas like the shoulders, neck, back, and calves. The magnesium in Epsom salt is thought to help regulate muscle and nerve function, potentially reducing inflammation and promoting relaxation
- Stress reduction and improved sleep : Magnesium plays a role in producing neurotransmitters such as serotonin, which can promote relaxation, reduce stress, and improve sleep quality. Soaking in an Epsom salt bath may help replenish magnesium levels and induce a calming effect, although this may also be due to the warm bath itself rather than absorption through the skin
- Constipation relief : When taken orally in controlled amounts, Epsom salt acts as a laxative by drawing water into the colon, which helps stimulate bowel movements. It is FDA-approved for this use but should be used cautiously due to potential side effects like bloating and diarrhea
- Reducing swelling and inflammation : Baths with Epsom salt can improve circulation and reduce swelling and inflammation, particularly in the legs and feet
- Support for conditions like fibromyalgia, arthritis, and psoriasis : Due to its anti-inflammatory and analgesic properties, Epsom salt baths or compresses may provide complementary relief for symptoms of fibromyalgia and arthritis, and help soften skin and reduce itching in psoriasis
- Minor wound care : The FDA also approves Epsom salt for soaking minor cuts and bruises to aid healing
Absorption and Scientific Evidence
The theory that magnesium and sulfate ions from Epsom salt are absorbed through the skin during baths is popular, but scientific studies have not conclusively proven this. More research is needed to confirm whether transdermal absorption occurs and to what extent
. Nonetheless, many healthcare professionals recommend Epsom salt baths as a safe and easy way to potentially boost magnesium and sulfate levels.
Summary
Epsom salt is primarily used in baths to promote muscle relaxation, reduce pain and swelling, relieve stress, and improve sleep. It can also be taken orally as a laxative. While some benefits are supported by magnesium’s known physiological roles, claims about absorption through the skin and detoxifying effects require further scientific validation. Use Epsom salt as directed, especially when ingesting it, and consult a healthcare provider if you have health concerns or plan to use it long-term
