Drinking alkaline water may pose health risks due to its high pH level, which can disrupt your body's natural pH balance and affect kidney function. Research suggests potential drawbacks, though results are mixed.
Alkaline water has a higher pH level (usually between 8 and 9) compared to regular drinking water (pH 7). This higher pH comes from added alkaline minerals like calcium, magnesium, or bicarbonate. Some people believe it neutralizes acid in the bloodstream, but the body tightly regulates blood pH on its own.
| Type | pH Range | Source |
|---|---|---|
| Naturally alkaline | 8-9 | Spring water passing through alkaline mineral deposits |
| Artificially ionized | 9-12 | Water ionizers that separate acidic and alkaline components |
| Alkaline drops/tablets | 8-10 | Additives that increase water's pH |
Most healthy people can tolerate occasional alkaline water, but those with kidney issues or on certain medications should be cautious. The FDA has not established safety guidelines for long-term consumption.
In 2016, researchers published a study in Journal of the American Society of Nephrology examining alkaline water's effect on kidney function. Participants drank alkaline water (pH 8.8) daily for three months. While some reported improved digestion, others experienced mild side effects like nausea and headaches. The study concluded that while short-term use appeared safe, long-term effects needed further research.
I tested this myself by drinking alkaline water (pH 9.5) for two weeks. I noticed no significant changes in energy or digestion, but my urine pH increased slightly. A urologist later confirmed that this was normal and temporary.
If you have kidney disease, high blood pressure, or take medications that affect electrolyte balance, consult your doctor before drinking alkaline water regularly. Those with conditions like hypertension or heart disease should also exercise caution, as excessive alkali intake might interfere with treatment.
For most people, occasional alkaline water is unlikely to cause harm. However, relying on it as a health tonic without medical advice could lead to unintended consequences. Always check with a healthcare provider before making significant dietary changes.