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Home » Blog » How much oxalate is in…

How much oxalate is in…

Jill Harris, LPN, CHC Avatar

Written by

Jill Harris, LPN, CHC

Updated

July 3, 2024

I get a lot of emails every day, and the question I hear most is this…

“Jill, how much oxalate is in ___________? It’s not on the list.”

My answer is the same now as decades ago: eat that unstudied food once or twice a week (I am very practical—you might have leftovers) in normal portions and meet your calcium needs each day.

This regular portion size business is how many of you gained a kidney stone. You ate large portions of high oxalate foods frequently without meeting your calcium needs. It is critical to meet your calcium needs.

My advice might make you a bit nervous. Why? You never want the pain of a kidney stone again, and eating food that has not been studied is scary. I understand. But rest assured, my advice has never let me (or my patients) down. You can always choose not to eat the unstudied food, but you certainly don’t have to make that choice.

As a patient, I understand the uncertainty you may feel. We all want to make the best choice possible so that we can achieve the desired outcomes. I can’t give you certainty about everything, but I can give you certainty about the portion-not-perfect rule.

Eat all foods within a reasonable portion size (except spinach and almonds) once or twice a week and get your calcium needs met. You might want to pair the unstudied food with some calcium, too. Remember, it’s about portion control, not striving for a perfect diet.

Also, if my advice makes you feel unsettled, eat the unstudied food on the day of your urine collection. Get your calcium needs met, and you will see for yourself and feel more confident going forward with unstudied foods.

Do you need help dialing in your diet and prevention plan?
– Take my self-guided Kidney Stone Prevention Course.
– Learn to cook for prevention with my Meal Plan Service.
– Stay accountable with my Group Coaching Calls,
– Understand your urine collection results with my Urine Analysis Consultation.

Your friend and forever advocate,
Jill

When you’re ready, here’s how I can help you prevent kidney stones

Since 1998, I’ve helped thousands of patients prevent kidney stones. With my Kidney Stone Diet All-Access Pass, you get access to every prevention tool I’ve ever created:

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    • 2 video calls per week with me and the Kidney Stone Diet community
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And, as a BONUS, you’ll get my flagship Kidney Stone Prevention Course (normally $249) absolutely free!

Learn More!

Jill Harris, LPN, CHC Avatar

About the Author

Jill Harris is a Licensed Practical Nurse (LPN) who specializes in kidney stone prevention. Her goal is to teach you what you need to know and, more importantly, how to put that knowledge to work so you can stop forming stones. For good.
  1. Tom Heringhaus Avatar
    Tom Heringhaus
    February 2, 2025

    sodium level question: my sodium levels are low 132 mmol/l
    I drink 80-86oz of water daily due to two kidney stone surgeries in the past.
    Do you have suggestions to bring my sodium to a normal level safely?
    Thanks!

    Reply
    1. Jill Harris, LPN, CHC Avatar
      Jill Harris, LPN, CHC
      March 17, 2026

      Hi Tom,
      I got about 100 of them. Read this: https://kidneystonediet.com/100-tips-for-lowering-sodium/
      j

      Reply
  2. Sue McDonald Avatar
    Sue McDonald
    February 12, 2025

    I really like many dairy products but they are pretty high in fat so I drink lots of 0-1% milk. I especially like chocolate milk (also 1%) but I mix it with white milk. How much should I limit how many glasses of the mixed milk I have a day?

    Reply
    1. Jill Harris, LPN, CHC Avatar
      Jill Harris, LPN, CHC
      February 12, 2025

      Hi Sue,
      It is more about you not going over your calcium limit each day. Make sure you do not as the body won’t absorb it all and extra could wind up in your urine and increase stone risk. I would not use chocolate milk all the time bc it has added sugar.
      j

      Reply
  3. Karen Ovnicek Avatar
    Karen Ovnicek
    April 9, 2025

    I have been trying to join the $38 a month program but am having trouble with my email and passwords. Can anyone help me with this please.

    Reply
    1. Jill Harris, LPN, CHC Avatar
      Jill Harris, LPN, CHC
      April 18, 2025

      Hi Karen,
      Please feel free to email me at [email protected] and we will figure it out.
      j

      Reply
  4. Patricia haney Avatar
    Patricia haney
    November 7, 2025

    Hello,
    Do you do Black Friday deals on your all access pass or any deals during the year?

    Reply
    1. Jill Harris, LPN, CHC Avatar
      Jill Harris, LPN, CHC
      November 8, 2025

      Hi Patricia
      We do deals through the newsletter. We actually have one starting today on privates. Sign up for the newsletter. https://kidneystonediet.com/newsletter/
      jill

      Reply

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“The Kidney Stone Diet is far more than just a diet; this plan is life-altering!”

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“I took the course with Jill, and my second 24 hour urine was MUCH better than the first.”

“She gives very practical information, and it WORKS. I was totally overwhelmed at first. I got very poor diet information from my doctors. Jill made it easy for me to understand, and I took it one day at a time. I still watch her videos when I need a tune-up. Jill is the best, and she really cares about all of us. Take the course—it will help you!!!”

Mark J. | Kidney Stone Prevention Course

Preventing kidney stones since 1998.

Jill Harris has been the #1 kidney stone nurse since 1998. After working with thousands of patients, she developed Kidney Stone Diet®, a suite of tools to help every patient take back their life and prevent kidney stones for good.

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