Brain tumor, breast cancer, colon cancer, congenital heart disease, heart arrhythmia. See more conditions.
Mayo Clinic offers appointments in Arizona, Florida and Minnesota and at Mayo Clinic Health System locations.
Subscribe to Housecall
Our general interest e-newsletter keeps you up to date on a wide variety of health topics.
For most people, plain water is better.
Bottled water sold as alkaline water is subject to regulation by the U.S. Food and Drug Administration. Alkaline water sometimes has nutrients added to it to achieve an alkaline pH.
Scientists use pH to describe how acidic a substance is on a scale of 0 to 14. By definition, a substance is alkaline if it has a pH of over 7.
Because alkaline water has a higher pH level than does plain tap water, proponents say that it can neutralize acid in your bloodstream. However, research suggests that alkaline water is unlikely to significantly change blood pH.
Some studies suggest that alkaline water might help slow bone loss, but it's not clear if the benefit is maintained over the long term.
Some say that alkaline water can help prevent disease, such as cancer and heart disease. However, there's little credible evidence to support such claims.
Katherine Zeratsky, R.D., L.D.
Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission.
Check out these best-sellers and special offers on books and newsletters from Mayo Clinic.
A single copy of these materials may be reprinted for noncommercial personal use only. "Mayo," "Mayo Clinic," "MayoClinic.org," "Mayo Clinic Healthy Living," and the triple-shield Mayo Clinic logo are trademarks of Mayo Foundation for Medical Education and Research.
This site complies with the HONcode standard for trustworthy health information: verify here.