---
title: "Is Flaxseed High in Oxalates? What Food Buyers Need to Know"
id: "350"
type: "post"
slug: "is-flaxseed-high-in-oxalates-what-food-buyers-need-to-know"
published_at: "2025-06-09T09:16:00+00:00"
modified_at: "2026-02-12T05:55:40+00:00"
url: "https://flaxseedspro.com/is-flaxseed-high-in-oxalates-what-food-buyers-need-to-know/"
markdown_url: "https://flaxseedspro.com/is-flaxseed-high-in-oxalates-what-food-buyers-need-to-know.md"
excerpt: "No, flaxseed is not considered high in oxalates. Compared to many nuts, seeds, and leafy greens, flaxseed contains relatively low..."
taxonomy_category:
  - "Article"
---

> **No**, [flaxseed](https://flaxseedspro.com/)
>  is **not considered high in oxalates**. Compared to many nuts, seeds, and leafy greens, flaxseed contains **relatively low levels** of oxalates, making it a **safe option** for most consumers — including those concerned about kidney stones.

## 1. What Are Oxalates?

**Oxalates**, or **oxalic acid**, are naturally occurring compounds found in many plant foods. In the body, oxalates can bind to calcium and form **calcium oxalate crystals**, which are a major contributor to **kidney stones** (Massey et al., 1993).

### High-oxalate foods include:

- Spinach (approx. 750 mg per 100g)
- Rhubarb
- Beets
- Almonds
- Soy products

Not everyone is sensitive to oxalates, but for people prone to kidney stones, **limiting oxalate intake** may be recommended.

## 2. Oxalate Content in Flaxseed

According to data from the Harvard T.H. Chan School of Public Health and other food oxalate databases, **flaxseed contains only 2–10 mg of oxalates per tablespoon (approx. 10g)**. This is **considered low** by most dietary standards (Harvard, 2021).

| Food Item | Oxalate (mg per 100g) |
| --- | --- |
| Spinach (boiled) | ~750 |
| Almonds | ~450 |
| Buckwheat | ~130 |
| Chia seeds | ~40 |
| Flaxseed | ~20–30 |

So, if your customers are seeking **low-oxalate ingredients**, **flaxseed is a great choice**—especially in **milled or oil** form.

## 3. Nutritional Benefits of Flaxseed

Besides being low in oxalates, flaxseed is valued for its rich **nutrient profile**:

- **Alpha-linolenic acid (ALA)** – A plant-based omega-3
- **Lignans** – A powerful antioxidant
- **Dietary fiber** – Both soluble and insoluble
- **Protein** – Approximately 18–20%

These components make flaxseed a **functional ingredient** in many health-focused products like:

- Baked goods
- Breakfast cereals
- Smoothies and bars
- Nutritional supplements

## 4. Industrial Applications and Oxalate Concerns

For food manufacturers, **ingredient oxalate content is often overlooked**, but it matters in niche markets, especially:

- **Renal diets**
- **Low-oxalate medical foods**
- **Natural health products**

### Why flaxseed is a good fit:

- **Low oxalate, high nutrition** – A rare combination
- **Versatile formats** – Whole, ground, defatted meal, oil
- **Heat-tolerant** – Stable in baking and extrusion

Compared to **soy**, which is higher in oxalates and phytoestrogens, **flaxseed offers similar benefits with lower antinutritional risk**.

## 5. Alternatives to Flaxseed (If Needed)

For applications where flaxseed isn’t suitable (e.g., texture or flavor restrictions), consider:

| Function | Alternative | Oxalate Level |
| --- | --- | --- |
| Omega-3 source | Chia seeds | Moderate (~40mg/100g) |
| Binding in baking | Psyllium husk | Very low |
| Texture/gum substitute | Guar gum | Very low |

Still, **flaxseed remains one of the best all-around ingredients** in the low-oxalate, functional food category.

## Conclusion

**Flaxseed is low in oxalates**, safe for kidney-conscious diets, and highly valuable for food producers targeting health-focused consumers. With its excellent nutritional profile and minimal antinutritional factors, it deserves a place in your ingredient portfolio—especially when oxalate content matters.

Learn more about [Flaxseed Products](https://flaxseedspro.com/flaxseed-products/)
. Visit: [flaxseedspro](https://flaxseedspro.com/)

## References

- Harvard T.H. Chan School of Public Health. (2021). **Oxalate Content of Food**. Retrieved from [https://regepi.bwh.harvard.edu/health/Oxalate/files](https://regepi.bwh.harvard.edu/health/Oxalate/files)
- Massey, L. K., Roman-Smith, H., & Sutton, R. A. (1993). Oxalate content of foods and its effect on humans. *The American Journal of Clinical Nutrition, 57*(3), 419–422.

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