Iowa, Farming and Cancer: What Do We Really Know?
21 April 2026

Iowa, Farming and Cancer: What Do We Really Know?

At the Iowa Farm Table Podcast

About

Iowa has a cancer problem. We are one of the only states in the nation with a growing cancer rate, and have higher levels of certain kinds of cancers than do similar areas of the country.

Many have put the blame on Iowa’s fields, while others say that legal pesticides are safe for us and the environment.

In this episode we go down the rabbit hole to understand—how do chemicals become products on our shelves? Is a legal chemical safe? And what do researchers know about the relationship between chemicals and cancer?

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Voices

Audrey Tran Lam—Environmental Health Program Director, Center for Energy & Environmental Education, University of Northern Iowa

David Cwiertny—Professor, Civil and Environmental Engineering, Director, Center for Health Effects of Environmental Contamination, University of Iowa

Seth Watkins—Pinhook Farm

Weary Ramblers— Kathryn Severing Fox and Chad Elliott

Resources

Higher cancer rates in counties with more CAFOs, study finds

U.S. chemical management system must be transformed to prevent harm, argue new policy papers

REACH Regulation—European Commission on Energy, Climate change, Environment

Cancer and Environmental Risk Factors in Iowa—Iowa Environmental Council

EPA contact in Iowa

Cancer in Iowa—Iowa Cancer Registry

Interactive Iowa Maps—Iowa Cancer Registry

International Study Reveals Glyphosate Weed Killers Cause Multiple Types of Cancer

Stay in the Loop

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Lyrics to Reduce, Reduce, Reduce! by the Weary Ramblers

Pesticides kill things

That’s just what they do

They wouldn’t be good at their job

If they weren’t bad for you

So we need to spray more sparingly

Only what we really need

Listen to Mother Nature

She loves diversity

Got a few weeds?

That’s alright

A little milkweed and some foxtail

Their just fine

If you’re sprayin’

Just to spray

It does more harm than good

It costs more at the end of the day

We gotta’ start doing something…there’s just too much to lose

Reduce, Reduce, Reduce what we use

Reduce, Reduce, Reduce what we use

Don’t plant your crops on the water’s edge

Give ‘em ‘bout fifty feet

On the edge of every field

Go ahead and leave the trees

Doin’ these two things makes for

A Healthier, happy home

For the plants to grow and for the little critters to roam

Got a few weeds?

That’s alright

A little waterhemp and thistles

Their just fine

If you’re sprayin’

Just to spray

It does more harm than good

It costs more at the end of the day

We gotta’ start doing something…there’s just too much to lose

Reduce, Reduce, Reduce what we use

Reduce, Reduce, Reduce what we use



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