It doesn't seem enough to high five ourselves for getting eight glasses of water down the hatch these days. Now it seems we ought to ensure our water has the appropriate pH so we don't accidentally tip our body into an acidic state. Alkaline water, aka ionised water, is getting plenty of attention in the natural health sector. Its proponents claim the fact it has a pH of around 9 could not just increase our but even prevent cancer and diabetes. (If you forgot high-school chemistry, pH is a measure of acidity or alkalinity. On the pH scale of 1 to 14, 7 is the pH of pure water; every whole value below that is increasingly acidic, and every whole value above it is more alkaline". A healthy human body has a pH of a little over 7.) Alkaline water is created by running water through an “ionising” machine that contains electrodes that are said to re-align your water in a bid to remove toxins and increase the pH. The idea of drinking alkaline water or following an alkalising diet is that the Western diet is highly acidic, which makes for a breeding ground for infection and disease. If we can take steps to make our bodies more alkaline, such as by drinking alkaline water, then they say we'll be in a much healthier state. According to Choice, drinking alkaline water won't harm you — but it probably won't actually make any difference to your internal pH, given our bodies are experts at keeping our pH between 7.35 and 7.45 no matter what we eat or drink.