there are 2 common factors between 2006 and 2008. the first is stress from playing video games competitively online. the second is stevia. it's possible that taking stevia in sugar quantities acts a psychotropic drug.
since it's only sold as a herbal remedy there is no oversight on how it's made, or the long term dangers of using it. yeah yeah, stress can induce mental illness, but i had way less stress, but the same quantity of stevia.
now, the stevia by itself isn't the sole cause, i had relapses with no stevia drinkage on a different medicine, so i assume that my stress fracture from getting to lvl 29 or so on the battle.net ladder...(actual level might have varied)