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Q&A with Australian Health Practitioners
What are the dietary recommendations for someone who is prone to getting kidney stones?
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Are there certain foods that tend to cause kidney stones? What foods/liquids should be avoided? -
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Kimberley Davis
Dietitian
Good Nutrition for Life is a private dietetic practice based in Cleveland, Queensland and is owned by Kimberley Davis who is an Accredited Practising Dietitian. … View Profile
A number of contributing factors can cause kidney stones. Too much calcium and oxalate in the urine are the most common cause of kidney stones as they bind together as crystals to form stones. To prevent future kidney stones it is important that you following these dietary guidelines. Firstly, drink at least 2-3 Liters of fluid per day, preferably water as water helps to flush out the kidneys and dilute the crystals that form stones. It is important to consistently drink water during the day rather than in one large sitting (e.g. 1 glass per hour rather than 2L at 5pm when you realise you have not had any all day)! Secondly, limit foods high in oxalates as this reduces the amount in your urine which decreases the likelihood that stones will form. Foods and drinks high in oxalate include stong black tea, orange juice, nuts, chocolate, berries, rhubarb, spinach, sweet potato, leeks, eggplant and wheat bran. You do not need to avoid these foods but limit them. Thirdly, limit your sodium (salt) intake. Foods highest in salt include processed foods such as packaged foods (e.g. chips and snack foods), processed meats, sauces, gravy and soups. Therefore, purchase fresh foods such as fruit, vegetables, fresh meats, chicken, fish, eggs, rice and pasta. Do not add salt to your cooking or at the table! Finally, it is important that you include adequate calcium in your diet for healthy bones and teeth. Even though calcium can form kidney stones, an adequate intake is acceptable. Include at least 2-3 serves per day (1 serve = 250mL milk, 200g yoghurt or 40g/2 slices cheese). It is best to visit your local Accredited Practising Dietitian and your GP if you are concerned that you have kidney stones.
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