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16 Non-Dairy Calcium Sources for Kidney Stone Formers

by Jill Harris, LPN, CHC on Mar 4, 2021

In all my years of talking with patients and students about kidney stone prevention, not one of them has said to me, “Oh Jill, don’t worry. I get plenty of calcium each day.” Most adults don’t get anywhere near the amount of calcium they need.

The National Osteoporosis Foundation “recommends that women aged 50 and younger get 1,000 mg of calcium from all sources daily and that women aged 51 and older get 1,200 mg. For men, NOF recommends 1,000 mg of calcium daily for those age 70 and younger and 1,200 mg for men age 71 and older.”

We recommend the same amounts of daily calcium in kidney stone prevention. Not only does your skeleton need the calcium, but in stone disease, it is how we rid our bodies of excess oxalate. Many of you overate high oxalate foods like spinach and nuts all day, but the combination of this and not getting much calcium in your diet made it the perfect storm for a stone incident.

We do like all calcium to be gotten from foods and not supplements. Supplements in pill form have been shown to increase stone risk. Of course, if your doctor has prescribed calcium supplements because you have had bariatric surgery or have other malabsorption issues, take them as directed.

Many people do not or will not drink milk for various reasons. And many people don’t eat dairy products at all. It certainly makes it harder to get your calcium needs met, especially when you take away some of the best vegan sources like spinach, almonds, and almond milk. Below you will find a list that will help get your needs met without breaking your oxalate goals!

Remember to get your calcium throughout the day, split up to no more than 500mg at a time, not over, as the body will have a more challenging time absorbing it all at once. And don’t go over your total calcium requirements per day. More is not better. Except maybe for fluids!

Also, I am not telling you to have the below foods in the portion sizes listed. I am merely writing down the oxalate and calcium levels by the portion sizes they were measured. You can eat less (or more) of the listed portion size.

Non-Dairy Calcium Sources


Fortified Coconut, Rice, Flax, Oat, and Pea 

Although these milks have been fortified, it is easier for the body to absorb the calcium because it’s already broken down. Shake the containers up before pouring. You want to make sure the calcium is properly mixed up and getting in your glass.

No oxalate in this milk. You can get the bulk of your calcium needs met this way.

Orange Juice
Get the lower sugar variety and check that they have added calcium. The brand Simply Orange Juice (light) has over 350 mg of calcium and no added sugar. That being said, it still has 23 grams of naturally occurring sugar and will not suit people with diabetes. You can always choose 1/2 the portion size and drink 4 ounces. You still get 175 mg of calcium and 11 grams of naturally occurring sugar. (Oxalate is LOW. Oranges are high because of the pith).

Canned sardines
One can is known to have up to 800 mg of calcium, zero oxalates. Get a lower sodium option.

Canned pink salmon with bones
You can get up to 232 mg of calcium without any oxalate. Watch sodium in these products.

Fortified cereals like Cheerios
Check labels on cereals and see how their calcium level stacks up. Cheerios has about 130 per 3/4 cup. And if you have it with non-dairy milk, well, there you go!

Fortified English Muffins
Check labels on each brand. Calcium levels will vary, and so will sodium. The best one is the one that is lower sodium and higher calcium. Oxalate is around 8.

Broccoli
43 mg calcium/1 cup chopped
2 mg oxalate/1 cup chopped

Peas
36 mg calcium/1 cup
2 mg oxalate/1 cup

Chinese Cabbage (bok choy)
74 mg calcium/1 cup
4 mg oxalate/1cup

Kale
101 mg calcium/1 cup chopped
2 mg oxlate/1 cup chopped

Mustard Greens
64 mg calcium/1 cup chopped
4 mg oxalate/1 cup chopped

Sunflower Seeds
109 mg calcium/1 cup
12 mg oxalate/1cup

Pistachio Nuts
129 mg calcium/1 cup
about 60 mg/1 cup

Mung Beans (raw)
273 mg calcium/1 cup
16 mg oxalate/1 cup

Red Kidney Beans
263 mg calcium/1 cup
30 mg oxalate/1 cup

Oatmeal
187 calcium/1 cup cooked
0 oxalate/1 cup

So Delicious Coconutmilk Plain “Yogurt”
420 mg calcium/ 3/4 cup
0 oxalate

Let me know what non-dairy foods and drinks you have been using to get your daily calcium needs met.

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About the Author Jill Harris, LPN, CHC

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.

Comments

  1. Jessica

    March 10, 2021 at 3:38 pm

    I’m switching to fortified oatmilk as a low oxalate, calcium rich, plant based milk (switching from soy milk). Question: Oatly “Barista Edition” is vitamin and calcium enriched but it contains “dipotassium phosphate” and some other phosphates and I could not determine any oxalate content of whatever that is, but in the old days when I had my first stone (1994) back then I was told no phosphates (… and lots of other restrictions much different from much of today’s guidance). If possible, could you please advise regarding oxalate content of dipotassium phosphate and or any other kidney stone risk associated with the ingredient? Thanks so very much.

    Reply
    • Jill Harris

      March 11, 2021 at 4:49 pm

      Hi Jessica,
      I would not worry about oxalate and dipotassium phosphate. If you have been told to limit phosphate bc of kidney disease than this might be an ingredient you should not have.
      j

      Reply
  2. Alin Pop

    March 25, 2021 at 3:13 am

    Does “fortified” not mean an additional calcium addition made by the manufacturer? How does the addition of calcium made by the manufacturer differ from my supplementation with calcium citrate tablets? Thanks.

    Reply
    • Jill Harris

      March 27, 2021 at 6:37 pm

      Hi Alin-
      It does indeed. Bit easier to metabolize in this form-
      Jill

      Reply
  3. Robert Dale Coates

    April 18, 2021 at 9:01 am

    I just read about fish oil helping with calcium absorption: Researchers at Massey University in New Zealand found that fish oil increases calcium absorption, bone calcium content and bone mineral density, according to a study published in “Prostaglandins, Leukotrienes, and Essential Fatty Acids” in November 2005. The scientists found that DHA increased calcium in bone more effectively than EPA. Luckily, I have to take a lot of fish oil for hyper triglycerides.

    Reply
  4. Jodie

    June 23, 2021 at 9:55 pm

    This isn’t for me, it’s for my dog, lol. I’ve been home cooking for him since he was diagnosed with kidney disease last year. I want him to get the most out of his food, doing tons of research and that led me to learning all about anti-nutrients, oxalates being just one of them.

    I need him to be getting calcium but stopped eggshells when I discovered they kill stomach acid that’s required for proper digestion and to access the nutrients in food.

    Sardines and canned salmon I can do, although those have issues of their own. Do you know if calcium citrate is fine in regards to stomach acid? I should probably be taking some kind of calcium supplement myself!

    Reply
    • Jill Harris, LPN, CHC

      June 27, 2021 at 9:32 am

      Hi Jodie,
      Talk to your vet. Pups are not my specialty, but I hope that yours feels better soon!
      j

      Reply
      • Jodie

        June 29, 2021 at 3:35 am

        Okay, never mind giving it to my dogs, lol. I won’t take calcium carbonate either on account of it neutralizing stomach acid. Do you know if calcium citrate does as well? I’m not a fan of canned sardines or salmon. I can only eat so much broccoli.

        And my vet likely won’t have a clue. Most of them don’t know about nutrition. My dog would actually be dead almost 9 months now had I listened to them.

        Reply
  5. kathyr

    November 15, 2021 at 2:18 pm

    I had always heard the calcium in green leaf veggies and in broccoli is not very absorbed in our body!
    I’m so confused.

    Reply
    • Jill Harris, LPN, CHC

      November 17, 2021 at 5:59 pm

      Hi Kath
      ,
      Calcium can be harder to absorb no matter where you get it from. Keep it simple, get it from sources that work best for you and your needs. Dairy or non dairy milk, veggies, and make sure your vitamin D blood levels are where they should be so you are absorbing calcium best you can. My blog has ways to get it whether you are using dairy or not. Kidneystonediet.com/blog
      j

      Reply
  6. JoJo

    April 23, 2022 at 10:31 am

    Jill, THANK YOU for taking the time to share so much information. As I make my own oat and flax milk I guess that I should not consider them as a calcium source.

    I wonder if I can purchase, the calcium that the manufactures add to the oat milk. I will start my round of research on this topic.

    Reply

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