From the Research
Epsom salt is not a proven method for improving insulin sensitivity, and its use for this purpose is not recommended as a primary intervention. The most recent and highest quality study on this topic is from 2024, which found that oral magnesium supplementation does not improve insulin sensitivity in people with insulin-treated type 2 diabetes and low magnesium levels 1. While some studies suggest that magnesium supplementation may help improve insulin sensitivity in magnesium-deficient individuals, the evidence is limited and inconsistent. For example, a 2003 study found that oral magnesium supplementation improved insulin sensitivity and metabolic control in type 2 diabetic subjects with decreased serum magnesium levels 2, but a more recent study from 2024 found no such effect 1. Other studies have investigated the relationship between salt intake and insulin sensitivity, but these findings are not directly relevant to the use of Epsom salt for improving insulin sensitivity 3. Additionally, some studies have found that higher magnesium intake is associated with a lower risk of impaired glucose and insulin metabolism and progression from prediabetes to diabetes, but these findings are based on dietary magnesium intake, not Epsom salt baths 4. In terms of using magnesium to potentially help with insulin function, oral magnesium supplements taken under medical supervision would likely be more effective than Epsom salt baths, as absorption through the skin is minimal and inconsistent. If you're concerned about insulin sensitivity, more established approaches include regular physical activity, maintaining a healthy weight, following a balanced diet rich in whole foods, getting adequate sleep, and reducing stress. For those with diagnosed insulin resistance or diabetes, medications prescribed by healthcare providers remain the standard treatment. Although Epsom salt baths are generally safe and may help with muscle relaxation and stress reduction, they should not be relied upon as a primary intervention for improving insulin sensitivity. Key points to consider include:
- Epsom salt baths are not a proven method for improving insulin sensitivity
- Oral magnesium supplements may be more effective for improving insulin sensitivity, but should be taken under medical supervision
- Established approaches such as regular physical activity, healthy diet, and stress reduction are recommended for improving insulin sensitivity
- Medications prescribed by healthcare providers remain the standard treatment for diagnosed insulin resistance or diabetes.