Ask the expert: How do you know if you have glaucoma?
Ask the expert: Macular degeneration and diet
How to beat the mid-afternoon slump
Tiredness after glandular fever
What causes kidney stones?
Many doctors believe that drinking about eight glasses of water a day, which keeps your urine volume up above two litres a day, helps prevent kidney stones.
I have just recovered from a very painful bout of kidney stones. The pain was even worse than childbirth. I have trying to work out what caused them and what I can do to never get them back again. I've been told that drinking mineral water often causes kidney stones. Is this true?
Mineral water usually only contains trace amounts of minerals, so it is not generally thought to cause kidney stones. What is more likely to be a trigger for kidney stones is dehydration from not drinking enough water. Kidney stones are extremely common, and about a million Australians are currently suffering from them. It's a particularly common here because of our hot, dry climate. Many doctors believe that drinking about eight glasses of water a day, which keeps your urine volume up above two litres a day, helps prevent kidney stones. In fact there is scientific evidence to suggest that if you have had one kidney stone, you can halve your risk of getting a second one by drinking enough water to keep your urine volume at or above two litres a day. As each person's situation will vary, it's important to see your doctor for advice on what's right for you. The Australian Kidney Foundation has excellent information on kidney stones: www.kidney.org.au