Grains Decision Guide

Grains are a staple in many diets and are often consumed daily in foods like bread, rice, pasta, oats, and cereals.
The main difference between grain sources is how they are grown, processed, and stored, and how much exposure that introduces into what you’re eating and contributes to exposure over time.

Organic Whole and Specialty Grains

Best overall options

Organic Whole and Specialty Grains

Best overall options

What it is Organic whole grains, organic einkorn, and high-quality organic 00 flour from reputable sources

Material Better-sourced grain with lower agricultural exposure

Why it matters Lower exposure to herbicides and pesticides like glyphosate, with better sourcing and fewer major quality concerns overall

The strongest category because it combines cleaner farming practices with better sourcing — this is where organic einkorn and quality organic 00 flour fit best.

Other Organic Grains

Still a good option

Other Organic Grains

Still a good option

What it is Other organic refined grains, flours, or grain products that are not as strong as the top-tier choices

Material Organic grain with more variation in processing and quality

Why it matters Still lowers pesticide exposure, but quality and processing can vary more depending on the product and source

A solid choice when top-tier options are not available, but there is usually more variation in how the grain has been processed and handled.

Conventional Whole Grains

Less processed, but more agricultural exposure

Conventional Whole Grains

Less processed, but more agricultural exposure

What it is Non-organic oats, brown rice, quinoa, wheat, or similar grains sold in whole form

Material Less processed grain with higher agricultural exposure

Why it matters Can carry more herbicide and pesticide residue like glyphosate, even though the grain has gone through fewer processing steps

Better than heavily refined conventional grain, but the conventional farming piece still makes this a meaningful exposure source.

Conventional Refined or Poorly Stored Grains

Worst option

Conventional Refined or Poorly Stored Grains

Worst option

What it is Refined conventional flour, breads, cereals, pasta, or grains stored for long periods in poor conditions

Material Higher-exposure grain with more processing and storage risk

Why it matters Most likely to combine pesticide residue like glyphosate with added processing and a higher chance of mold toxins like aflatoxin, ochratoxin A, or DON

The highest exposure category because it stacks multiple issues at once — conventional agriculture, heavier processing, and more time in storage.

How to think about grains

With grains, the key question is simple:
👉 What has this grain been exposed to before it reaches your plate?

In practical terms, focus on:

How the grain is grown (organic vs conventional)
How it is processed (whole vs refined)
How it is stored over time
How often you are consuming it

Grains go through multiple stages before you eat them. Each stage is a potential point of exposure.

Where exposure comes from

Exposure with grains comes from how they are grown, processed, and stored.

Conventional farming is the main starting point. Many grains are treated with herbicides, pesticides, and fungicides during growth. Common examples include glyphosate, chlorpyrifos, and other pesticide residues that can remain on or within the grain.

Storage is another major factor. Grains are often stored for long periods, which creates conditions where mold can develop. This can lead to the presence of mycotoxins such as aflatoxin, ochratoxin A, and DON (deoxynivalenol).

Processing also plays a role. Highly refined grains go through additional steps that can:

Strip away nutrients
Increase surface area and oxidation
Introduce more handling and potential contamination

Even packaging and long storage in plastics can contribute additional exposure over time.
Because grains are often eaten daily, small exposures from multiple sources can add up quickly.

What to look for when choosing grains

You don’t need to eliminate grains entirely. Focus on reducing the main exposure points.

Choose organic when possible
Reduces exposure to herbicides and pesticides like glyphosate

Prioritize well-sourced grains with good turnover
Limits long storage times where mold and degradation can occur

Use whole grains when it makes sense
Fewer processing steps and less handling

Consider heritage and specialty grains
Options like einkorn are less hybridized and more genetically simple than modern wheat

Look for high-quality flours (stone-milled or 00 organic)
Better sourcing and processing can make a meaningful difference

Be mindful of frequency
Daily consumption increases cumulative exposure over time
Small changes here can significantly reduce overall exposure.

Common labels explained

Organic
Indicates the grain was grown without synthetic pesticides or herbicides like glyphosate.

Non-GMO
Refers to genetic modification, but does not mean the grain is free from pesticide exposure.

Enriched or Refined
Grains that have been processed and had nutrients removed and then partially added back.

Bottom Line

Grains are a frequent and consistent exposure point.

Conventional and highly processed grains can combine multiple issues at once, including pesticide residues like glyphosate, mold toxins like aflatoxin and ochratoxin A, and increased processing-related degradation.

When consumed regularly, this combination can contribute to gut irritation, inflammation, and overall increased toxic load in the body.

More stable, better-sourced options like organic whole grains, organic einkorn, and high-quality organic flours reduce these inputs and are far less likely to introduce unwanted compounds into your diet.

The goal is to choose grains that are grown, handled, and stored in ways that minimize what ends up in your food.