This is a great question. Presently, the national clinical trial database (clinicaltrials.gov) lists about 177 such studies, with about 1/4 of them either “currently” or “not yet” recruiting. At any time, anyone (not just scientists) can find them and further investigate whether any are suitable for you by searching on www.clinicaltrials.gov.

To date there are at least 80.As of March 12, 2022, 190 of them are listed on clinicaltrials.gov.We have summarized the relevant peer reviewed scientific literature recently (Yagashita et al. 2019; Yagashita et al. 2020; Fahey & Kensler 2021).Since these reviews were published, a number of additional clinical studies have been published, in particular, dealing with autism (ASD) and schizophrenia.

Far fewer than those dealing with sulforaphane – about 10 (see Waterman et al. 2021), with 25 of them listed on clinicaltrials.gov as of March 12, 2022.