Study Reveals Fewer Mold Toxins in Organically Grown Grain, Compared to Grain Grown Conventionally

May 28, 2024

By Anne Wennberg

An international meta study reveals that there may be less of certain mold toxins in organically grown grain, compared to grain grown in the conventional manner. This, and other findings from research into agricultural products, can have major consequences.

"Up until now, the general assumption has been that grain grown using organic methods is more contaminated with mold toxins than grain grown in the conventional way and contaminated grain can pose a health risk to humans.

"An extensive meta analysis published in Comprehensive Reviews in Food Science and Food Safety, demonstrates the opposite," says professor Per Ole Iversen.

He is one of two scientists from the Department of Nutrition at UiO who participated in the study. Carlo Leifert, professor of organic agriculture and currently a guest professor at the Institute of Basic Medical Sciences, also both initiated and participated in the study.

Several advantages to organic farming

Iversen is the representative of human medicine in the research group and believes that the study is greatly strengthened by being interdisciplinary. "The meta study we have just published makes it clear that organic methods of cultivation do not lead to a higher incidence of mold in crops than conventionally grown grain, and to some extent, the opposite is the case: for two types of mold, there was no difference."

In addition, the study has also revealed a number of advantages linked to organic cultivation.

"Research into organically grown foods has been carried out for many years and many people believe that this type of cultivation is good for both livestock and farmers—and for human health—but we were not quite sure about the latter.

"Now it looks as if organically grown fruit and vegetables have a more favorable content of antioxidants and micronutrients than agricultural products produced in the conventional way, and this can be good for both you and me," says Iversen.

Surprising findings on mold

Iversen believes that the study will have major consequences.

"The myth that organic cultivation has a higher risk of being affected by mold has now been largely refuted. In any case, it should not weaken the message that  production is to be recommended," says Iversen, adding that these findings are very surprising and have weight, since they are based on a large number of well documented findings from different parts of the world.

Students and pregnant women are included in the study

Iversen and his colleagues have previously conducted a randomized,  among , where they also found that organically grown food is advantageous compared to  cultivated in the normal way.

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