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So how much broccoli would it take to yield the same results for humans? It would be three and a half cups, lead researcher Gary Perdew said in a statement.
"Now, three and a half cups is a lot, but it's not a huge amount, really," Perdew said. "We used a cultivar — or variety — with about half the amount of this chemical in it, and there are cultivars with twice as much. Also, brussels sprouts have three times as much, which would mean a cup of brussels sprouts could get us to the same level."
Additionally, cruciferous vegetables like broccoli, brussels sprouts and cabbage may help prevent diseases, including various cancers and Crohn's Disease, caused by inflammation in the lining of the gut, the study said.
Researchers did note that some people with certain digestive conditions are told to avoid too much roughage. That’s why they are looking for other foods that could have similar effects.
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