Baking soda has long been used for everyday remedies, from easing heartburn to freshening breath. Now, research suggests it may also play a role in reducing inflammation, a key factor in many autoimmune diseases. Autoimmune conditions occur when the immune system mistakenly attacks healthy tissues, contributing to diseases such as rheumatoid arthritis, lupus, multiple sclerosis, and Hashimoto’s thyroiditis. Because chronic inflammation is central to these disorders, scientists continue searching for safe ways to help calm the immune response.

A 2018 study found that drinking water mixed with baking soda appeared to trigger anti-inflammatory signals in the body. Researchers observed changes in immune cells called macrophages, with a shift from inflammation-promoting cells to those associated with reducing inflammation. The findings suggested that baking soda may encourage the body to adopt a more balanced immune response rather than remaining in a constant state of activation.

Researchers believe this process involves communication between cells in the spleen and chemical signals that help regulate inflammation. While the study involved healthy participants and more research is needed, the results raised interest in whether baking soda could one day support people living with chronic inflammatory conditions. Its low cost and widespread availability have also contributed to growing public interest.

Despite its potential benefits, baking soda is not a cure and should be used carefully. Because it contains high levels of sodium, it may not be suitable for people with high blood pressure, kidney issues, or certain medical conditions. It can also interact with medications, making it important to consult a healthcare professional before adding it to a daily health routine.