EXPERT TAKE
Judy Cho & Elliot Overton on Oxalates — The Silent Accumulator
Experts:Judy Cho (NTP, Carnivore Cure author) & Elliot Overton (holistic nutritionist)
Source: Nutrition with Judy
Elliot Overton developed severe gut issues traveling through India. Conventional medicine told him to live with it. He went down the rabbit hole of plant toxicity and found oxalates — a compound that accumulates in your body for years before causing problems.
Judy Cho sees the same patterns in her practice. People who've eaten "healthy" diets heavy in spinach, almonds, and dark chocolate are some of the sickest when they come to her.
What Oxalates Are
Overton's explanation is straightforward: oxalates are organic acids found in many plants. Spinach, rhubarb, dark chocolate, almonds, sweet potatoes, Swiss chard. They bind tightly to minerals — calcium, magnesium, potassium — and form needle-like crystals.
"If you look at an oxalate crystal under a microscope, it's capable of doing severe mechanical damage to an organism," he says.
The theory: plants use oxalates as a defense mechanism. You eat too many, you feel terrible, you stop eating that plant. Except humans override those signals and keep eating.
The Accumulation Problem
Unlike gluten, which causes immediate reactions in sensitive people, oxalates are slow. You can eat high-oxalate foods for years with no obvious symptoms. The body accumulates them in tissues — joints, muscles, thyroid, vascular system, even breast tissue.
Overton cites a study showing 80% of adults over 50 have significant calcium oxalate deposits in their thyroid. 80% of kidney stones are calcium oxalate. The research on deposits in other tissues is growing.
"It's insidious," he says. "You don't get a negative response at first. Many people feel great on green smoothies. Then years later, it goes downhill."
The Symptom Picture
Cho and Overton list what they see most often:
- Joint pain. Unexplained, mimics arthritis. There's actually a clinical term for it — oxalate-induced arthropathy. The crystals lodge in joints and cause mechanical damage every time you move.
- Skin issues. Flare with certain foods, calm with others.
- Urinary problems. Frequent urination, burning, recurrent UTIs, kidney pain.
- Vaginal/vulvar pain. Chronic yeast infections, itching.
- Cyclical symptoms. The key tell. Every few weeks, symptoms spike — diarrhea, fatigue, brain fog — then resolve.
Why Carnivore Can Go Wrong
Here's the counterintuitive part. Someone with oxalate accumulation goes carnivore — eliminates all plant foods overnight — and feels worse, not better.
Overton explains: when you stop eating oxalates, your blood level drops. When blood levels drop, tissues sense it and start releasing stored oxalates. This is called dumping.
"You can become acutely hypokalemic, end up in the emergency room," he says. "Severe palpitations, can't breathe, anxiety, panic attacks. The potassium is being wasted through the kidneys."
Cho has seen patients land in the ER from cutting oxalates too fast. The solution isn't to avoid carnivore — it's to taper slowly.
How to Taper
Overton's approach:
- Calculate current intake. 500+ milligrams daily is common on a "healthy" diet with spinach smoothies and almond flour.
- Reduce 5-10% per week. Not overnight. For severe cases, 3-4 months minimum.
- Watch for symptoms improving when you eat oxalates. Paradoxically, if eating spinach makes your symptoms better during the taper, that confirms you're dumping.
- Support with minerals. Calcium, magnesium, potassium citrate can help bind oxalates in the gut before absorption.
The B-Vitamin Connection
Both practitioners see a pattern: people with oxalate problems often have B-vitamin issues.
Overton's explanation: the body produces some oxalate in the liver naturally. Thiamine (B1) and B6 are required to divert precursors away from oxalate production. If you're deficient, you make more oxalate internally.
Biotin is another player. Oxalate can dock onto enzymes that need biotin, displacing it. High-dose biotin supplementation sometimes helps — but can also trigger dumping.
"The three key nutrients I find in people with oxalate problems are B1, B6, and biotin," Overton says. Some need megadoses — 1,000 to 10,000 times the RDA — to displace oxalate from enzymes.
Who Gets Problems
Not everyone. Cho and Overton estimate maybe 20-30% of people have significant oxalate issues.
Risk factors they identify:
- History of antibiotic use
- Poor gut health
- Chronic stress, immune activation
- Low dietary calcium (calcium binds oxalates in the gut)
- Genetic susceptibility
Some people eat high-oxalate diets for decades with no problems. Others react quickly. Individual variation is huge.
Other Views Exist
Cho and Overton's approach is one framework. Not everyone in the carnivore space agrees on oxalate protocols. Some argue the dumping concept is overstated. We'll cover those perspectives separately.
The Bottom Line
Cho and Overton's argument: oxalates accumulate silently for years, depositing in tissues and causing symptoms that get misdiagnosed as arthritis, autoimmune disease, or "mystery illness." Going carnivore too fast can trigger severe dumping. Taper slowly. Support with B-vitamins and minerals.
Whether oxalates are your issue — that's for you to investigate.