Genetically-modified corn and soybeans don’t appear to have any detrimental effects on animals, according to a research review by Jimmy Clark, professor of ruminant nutrition at the University of Illinois.

Clark reviewed 23 research experiments that were conducted over the past several years. In the studies, groups of dairy cows, beef cattle, sheep and poultry were fed either genetically-modified corn or soybeans or traditional corn or soybeans as a portion of their diet.

All 23 studies found no significant difference in the animals’ ability to digest the GMO crops compared to conventional corn and soybeans. Likewise, there was no significant difference in the animals’ weight gain, milk production, milk composition, or overall health.