According to a letter just sent to Britney's parents by PETA, studies show that people with hidden dairy sensitivities (a very common condition) can worsen cases of bipolar disorder and schizophrenia. PETA also cites evidence linking parasites found in undercooked meats to the development of schizophrenia. Crazy from burgers?
Luckily for Britney, says PETA, instead of meat, the consumption of beans can help improve such conditions, with the exclusion of uncontrollable farting. You are what you eat ... don't be a mad cow.
And the girl does love her some Taco Bell.