mental illness â(countable and uncountable, plural mental illnesses) ( 1 uncountable) The property of being mentally ill; mental disorders taken as a whole.  2006, R. Keith Sawyer, Explaining Creativity: The Science of Human Innovation, Oxford University Press US, ISBN 9780195161649, page 87:
The first Valentine's Day box of chocolates was introduced by who? Richard Cadbury introduced the first Valentine's Day box of chocolates in the 1800's. Source:(Fun facts about Valentine's Day , msn lifestyle) ..
So with those thoughts in your brain, make it a wonderful Valentineâs Day. For additional reading, check out Brain Cannabinoids in Chocolate(published in Nature, August 22, 1996), Prescription-based Chocolateby Jon Marino (2004), and Why Women Need Chocolateby Debra Waterhouse (1995).