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BackTable / Urology / Podcast / Episode #104
Dietary Modifications for Kidney Stone Prevention
with Dr. Kristina Penniston
In this episode of BackTable Urology, urologist Dr. Manoj Monga (UC San Diego) and clinical nutritionist Dr. Kristina Penniston (UW Madison) discuss the role of diet in kidney stone prevention and how urologists can partner with dietitians to create integrated stone clinics.
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BackTable, LLC (Producer). (2023, June 28). Ep. 104 – Dietary Modifications for Kidney Stone Prevention [Audio podcast]. Retrieved from https://www.backtable.com
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Podcast Contributors
Dr. Kristina Penniston
Dr. Kristina Penniston is a clinical nutritionist specializing in therapy for patients with urologic diseases.
Dr. Manoj Monga
Dr. Manoj Monga is the chair of the urology department at UC San Diego in California.
Synopsis
First, the doctors explore how to adjust fluid intake based on the patient's body size and consistency of bowel movements. They also cover ways to be creative with fluids, including incorporating low sugar, low calorie, and low alcohol beverages into the diet, as well as scheduling and flavoring options. They review the importance of mineral content in hard and soft water, and the potential benefits of alkaline water. Finally, they discuss the recommended sodium intake per day.
Next, Dr. Penniston explains that oxalate, a common component of kidney stones, is found in many plant foods, such as spinach, potatoes, sweet potatoes, beans, rhubarb, beets, nuts, and grains. She discusses how oxalate bioavailability can be reduced by the simultaneous consumption of foods and beverages containing calcium. Finally, she outlines the many non-dairy alternatives for calcium that are available.
Lastly, the doctors discuss how certain diets can increase and decrease the acidity of the urine. They debate the effects of intermittent fasting on stone risk, as well as the healthiest diet to lose weight without increasing stone risk. They end by emphasizing the importance of lifestyle changes and how a balanced and varied diet is key to successful weight loss.
Transcript Preview
[Dr. Manoj Monga]
Perhaps we'll start with not prevention but stone passage. Patients often come in and say, "I saw on the internet I'll drink a liter of Coke or I'll do some cod liver oil." A variety of things that I suspect have been tested with time, but maybe not with science. Are there any things that you've heard of that may actually work to help kidney stones pass?
[Dr. Kristina Penniston]
Not many things. Unfortunately, even the idea of pushing fluids while passing a stone, while many of my patients say that that's what helps them pass stones, there actually isn't the best evidence for that that it’s actually going to hasten kidney stone passage. I think it would be a good instinctual thing to do when you're trying to pass a stone, but drinking Coca-Cola, taking cod liver oil, doing any kind of supplements or anything like that to hasten passage, there's no evidence.
Disclaimer: The Materials available on BackTable.com are for informational and educational purposes only and are not a substitute for the professional judgment of a healthcare professional in diagnosing and treating patients. The opinions expressed by participants of the BackTable Podcast belong solely to the participants, and do not necessarily reflect the views of BackTable.
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