This sort of reminds me of Lupin Beans that I discovered and started eating in large quantities before (thankfully quite quickly) finding out are actually very

This sort of reminds me of Lupin Beans that I discovered and started eating in large quantities before (thankfully quite quickly) finding out are actually very dangerous if not properly prepared, and that even properly prepared (as they probably were) they may be ill advised for regular long term consumption due to their effects in the nervous system. Their acute toxic effects sound a little different, but I wonder if some similar issue occurred here.