Less diversity in the field means less diversity in the gut.

We often talk about superfoods, probiotics, and healthy nutrition. Yet one crucial question is rarely asked: How diverse is our food today?

In the past, thousands of local vegetable and crop varieties existed. Today, a large share of our diet comes from just a few highly bred cultivars. While supermarket shelves appear colorful, the genetic diversity of our food is often surprisingly limited.

This affects not only agriculture and flavor, but potentially our microbiome as well.

Why Diversity Matters Biologically

Not every carrot is the same, and not every tomato contains the same plant compounds.

Not every leafy green nourishes the same gut bacteria.

Different vegetable varieties contain different levels of:

• Dietary fiber
• Polyphenols
• Bitter compounds
• Secondary plant metabolites
• Sugar and starch profiles
• Micronutrients

For our microbiome, plant diversity also means metabolic diversity.

Different gut bacteria require different substrates. The more varied our diet, the more diverse the microbial processes taking place in our gut.

The Microbiome Loves Diversity

One of the most exciting findings in modern microbiome research is this:

People who eat a greater variety of plants generally have a more diverse gut microbiome.

This was demonstrated, among others, by the large-scale American Gut Project. One particularly striking finding:

Individuals who consumed more than 30 different plant-based foods per week showed significantly greater microbial diversity than those consuming fewer than 10 different plants per week.

Today, microbial diversity is considered an important marker of resilience and stability within the gut ecosystem.

Put simply:
A diverse gut is often more resilient to stress, inflammation, and environmental changes.

Interestingly, our gut functions much like a healthy soil ecosystem:
Diversity creates stability.

Seed Diversity Also Changes Nutrient Content

Purple carrots contain substantially more anthocyanins than standard orange carrots.
Heritage tomato varieties often exhibit more complex polyphenol profiles.
Bitter salad greens frequently contain higher levels of secondary plant compounds than varieties bred for mildness.

Things become especially interesting when looking at different varieties of the same plant.

These compounds influence not only flavor and color but also our microbiome.

Many polyphenols act as prebiotics. They selectively promote certain microorganisms while also being transformed by gut bacteria into bioactive compounds.

In other words:

We are not only feeding ourselves. We are feeding microbial networks.

Quality Begins in the Soil

The effects of plant compounds depend not only on the variety itself but also on the growing system.

Plants produce secondary metabolites in response to their environment, including soil microbiology, nutrient availability, and environmental stressors. A living, diverse soil can positively influence these processes.

Regeneratively managed soils are characterized by:

• High microbial activity
• Stable soil structure
• Improved nutrient availability
• Functional nutrient cycles

This can be reflected in greater nutrient density and a more complex composition of bioactive compounds.

Nutrition, therefore, does not begin in the supermarket. It begins in the soil.

What Modern Plant Breeding Has Changed

Modern agriculture has achieved remarkable progress:

• Higher yields
• Improved shelf life
• Reliable food supply systems

Many breeding objectives have understandably focused on:

• Uniformity
• Transportability
• Shelf life
• Rapid growth
• Yield

Less attention has often been given to:

• Polyphenol diversity
• Sensory complexity
• Microbiome-supporting properties
• Secondary plant metabolites

This does not mean modern varieties are inherently “bad.” However, it may mean they are biochemically less diverse.

Or put differently:

We have made plants more robust for supply chains, but in doing so may have reduced the complexity and resilience of our internal ecosystem.

Diversity Begins in the Soil

Even the best variety can only reach its full potential in living soils.

Soil microbiology, nutrient availability, and cultivation systems strongly influence which plant compounds a plant produces.

Regenerative agriculture aims to strengthen exactly these biological processes by promoting:

• Greater microbial activity in the soil
• More stable nutrient cycles
• Better soil structure
• More biological interactions

Ultimately, the biodiversity of the field continues into the human gut.

Healthy soils
Diverse plants
Diverse microbes
Resilient people

The idea of “From Soil to Gut” is not just a lovely slogan – it’s a real, living principle that we at Soil to Soul want to embody.

That’s why we’re especially excited about our partnership with Jucker Farm. Together, we’re committed to agriculture that respects not only the soil, but also the people who depend on it – both as consumers and as producers.

Since 2021, Jucker Farm has been practising regenerative farming on parts of their land, setting an example for living soils and a future-proof food system. Their products reflect this philosophy: naturally grown, in harmony with nature, full of flavour – and full of life.

In JUCKERFARM’S LATEST ARTICLE, you’ll get a hands-on look at how targeted soil observation and regenerative methods can be used in grain cultivation to promote soil health.

Soil to Soul and Jucker Farm share the same vision: nutrition begins in the soil – and healthy soils are the foundation for healthy people.