In some circles coconut water is considered ‘nature’s tonic’, with marvelous claims that it can reverse ageing, aid weight loss, improve blood pressure, reduce blood sugar and cholesterol levels, and ward off diabetes and heart disease. It’s also being touted as a cure for indigestion, constipation, bladder infections and kidney disease. Have I missed anything? Sounds pretty unbeatable, right? But what does the evidence suggest? Should you ditch plain old H20 for this ‘liquid gold’?