What are some theories about drinking alkaline water?

Theories about drinking alkaline water assert that it is an effective cure for many diseases, acts as a strong antioxidant, has anti-aging properties and promotes the absorption of nutrients. Some claims about alkaline water state that it prevents cancer, relieves asthma and arthritis symptoms, and reduces fat and cholesterol.

In 2014, the U.S. Food and Drug Administration issued a statement about alkaline water saying that claims and promises about the beneficial qualities of alkaline water are unsubstantiated so far. As of 2015, the FDA says that future claims about the benefits of alkaline water need to be backed by the results of clinical trials to be valid.