CuriousFellow has suggested - and Amari explained - that, for some technical reasons, it is advisable to start a new thread. I have given it the title "Diet and libido. Part 2", so to preserve a degree of continuity. Effectively immidiately, therefore, we will continue our conversation here. The original thread "Diet and libido" is to be considered closed. Thanks for Your attention and, particularly, for Your valuable contributions.