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As promised in my previous blog, “When Eating More Greens is Not a Good Idea”, today I’m providing more detail on the five specific – although rare – instances where greens may cause worsening symptoms in your client.
Today I’ll begin with the topic of Oxalate sensitivity.

Oxalate is a compound found in many green vegetables, and it is also produced as a waste product by the body. Oxalates are usually not absorbed by the gut, but are simply metabolized by the healthy bacteria in your gut or eliminated as waste products.

In a small percentage of people, however, the body has difficulty getting rid of the oxalate, or may absorb too much of it, and it can result in a myriad of symptoms. In particular, problems often occur when the gut bacteria is out of balance in some way.

Who can be affected?

If you find that a client is continuing to have symptoms while drinking their newly prescribed green smoothies, it is worthwhile to put on your detective hat and look a bit further at what’s going on…do they,

  • Have leaky gut symptoms (see below)?
  • Possibly have a genetic predisposition relating to oxalate or a history of calcium-oxalate kidney stones?
  • Possibly have a low amount of beneficial bacteria due to a recent round of antibiotics?
  • Have candida overgrowth symptoms (see below)?
  • Have an insufficient production of stomach acid (HCL)? Many over the age of 40 do!
  • Take in insufficient fiber or have other “bad diet” habits (processed foods, poor quality fats, too much sugar or alcohol, etc. that can cause candida overgrowth)?

Book-Green-Leafy-VeggetablesMost of the time, extra greens would result in increased energy, a reduction in pain and inflammation and improved hormonal balance. If that is not the case, time to retake their history and ask questions!

So if you client is reporting worsening symptoms, ask more questions!

Retake their history specifically looking at the above questions. Did they undergo recent antibiotics? Do they have a history of kidney stones (too much oxalate absorbed in the body can cause kidney stones in some people), or do they have other issues that have been attributed to excess oxalate? Based on other symptoms, could they be suffering from leaky gut?

Leaky gut is a common condition of the small intestine where the gut has been damaged and thus allows larger than usual food molecules and toxins to enter the blood stream. This can cause any of the following types of symptoms:

  • Gastrointestinal complaints: Abdominal pain, bloating, constipation, diarrhea, gas, indigestion, heartburn
  • Neurological disturbances: Anxiety, confusion, foggy thinking, mood swings, poor memory, nervousness, even aggressive behavior
  • Breathing troubles: Shortness of breath, asthma
  • Immune System Imbalances: Poor immunity, allergies, autoimmune diseases, recurrent bladder infections, recurrent vaginal infections
  • Skin problems: Skin rashes, eczema, psoriasis
  • Other symptoms: Chronic muscle pain, fatigue, hormone imbalances, chronic joint pain

These symptoms, by the way, are also often seen with candida overgrowth. So if your client’s history shows any of these symptoms they may also be prone to have oxalate sensitivities (if not responding well to their greens).

If you are interested in learning more about leaky gut, by the way, you might wish to check out my Clinical Mastery of the Digestive System program, which is included in my Nutritional Endocrinology Practitioner Training membership-based program for in-depth training on this incredibly important topic. After you apply, you'll have the chance to talk with us to learn more and have your questions answered.

Too much absorption of oxalate in the body (known as enteric hyperoxaluria), has also been suspected in many other diseases, either as causes or co-factors, but research is still a bit lacking. Those diseases include: depression, arthritis, autism, interstitial cystitis, vulvodynia, and fibromyalgia.

Foods high in oxalate include:

There are many foods and drinks that are high in oxalate and you can find detailed lists on the internet. When thinking about greens in particular, dark green vegetables such as spinach are particularly high. Other heavy hitters: broccoli, okra, Brussels sprouts, carrots, celery and parsley.

What can you do to minimize client problems if you suspect oxalate sensitivity:

  • Do a trial and see if limiting high-oxalate vegetables helps them.
  • Eat high calcium foods at the same time as high oxalate foods. This reduces the amount of oxalate being absorbed by the body.
  • Add calcium citrate to their diet. Oxalates bind to this and can then more easily be eliminated.
  • Avoid high doses of vitamin C supplementation as the body may turn extra vitamin C into oxalate.
  • Have your client drink a lot of fluids. At least ½ their body weight in fluid ounces plus 8 fluid ounces for each 15 minutes of sweating.
  • Have your client boil high-oxalate leafy greens (and discard the water).
  • Have them minimize fructose and sodium in their diet. Limit eating processed foods high in sodium.
  • Focus on improved gut health! Add probiotics or fermented foods to their diet. Lactobacillus love to eat oxalate. Fermented foods can also help with candida overgrowth.

So I hope you can see why it is so important to take an in-depth medical history and ask questions. Who would have thought ANYONE could possibly have an issue with our beloved greens!

In the next blog on the series of five I will be talking about genetic polymorphism as a potential reason for greens to be an issue for your client. See you then!

Have you had a client have an issue with oxalate sensitivity? If so, I’d love to hear about it. What did you recommend as a treatment?