Cat parasite toxoplasma uses 'Trojan horse' to infect human brain and may cause suicidal thoughts and risk-taking - Science - News - The Independent
http://www.independent.co.uk/news/science/cat-parasite-toxoplasma-uses-trojan-horse-to-infect-human-brain-and-may-cause-suicidal-thoughts-and-risktaking-8390165.html