Yeah our brains have outsmarted our bodies (AKA our agriculture outpaces our genetic evolution). It all comes down to the fact that it's damn hard to not eat a cookie (long-term positive results) instead of eating a cookie (short-term positive result)!
Yeah id love to see a break down on the lab rats for the last forty years and how their feed has been changed. Cant shake the nagging feeling that its all probably corn related. Just conincidnetal timeing i bet though. Virus is most probable.