This 2017 German review discussed the results of many of the studies performed over the past thirty years investigating the health-promoting effects of cruciferous vegetable compounds:
“SFN [sulforaphane] [is] the ITC [isothiocyanate] that is the most extensively studied for its chemopreventive and anti-inflammatory properties in vitro, as well as in vivo.
Due to the reversible nature of epigenetic aberrations, a modulation of epigenetically caused changes in gene expression by phytochemicals may be a promising approach in cancer prevention at the initiation step of carcinogenesis..Both SFN and DIM [di-indole methane] reversed many of the cancer-associated promotor methylations, including abnormally-methylated genes that are dysregulated during cancer progression..modulate the abnormal expression of miRNAs in different types of cancer.”
http://www.mdpi.com/1422-0067/18/9/1890/htm “Brassica-Derived Plant Bioactives as Modulators of Chemopreventive and Inflammatory Signaling Pathways”
A 2017 Polish human cell study that wasn’t cited above due to its recent publication found:
“We show for the first time that SFN is an epigenetic modulator in breast cancer cells that results in cell cycle arrest and senescence.”
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5596436/pdf/thnov07p3461.pdf “Sulforaphane-Induced Cell Cycle Arrest and Senescence are accompanied by DNA Hypomethylation and Changes in microRNA Profile in Breast Cancer Cells”