Professor Rob MacCoun is quoted in this Live Science article on the hazards of edible marijuana following the recent death of a teenager who jumped to his death following the consumption of a marijuana cookie. 

A teenager in Colorado died after consuming an entire marijuana cookie that contained 6 servings of marijuana’s active ingredient, tetrahydrocannabinol (THC), according to a new report.

The 19-year-old man had received a marijuana cookie from his friend, a 23-year-old who bought the product from a store. The sales clerk instructed the friend to divide the cookie into six pieces, with each piece containing about 10 mg of THC, the recommended serving size established by Colorado authorities.

…

High doses of THC “can produce serious anxiety attacks and psychoticlike symptoms,” Robert MacCoun, a professor at Stanford Law School, told Live Science in an interview earlier this year. MacCoun previously published a commentary in the New England Journal of Medicine expressing concern about the hazards of edible marijuana products for children and teens.