BLOOMINGDALE, Ill. (AP) — Meryl Streep has attended a charity gala in suburban Chicago to help raise awareness about pediatric epilepsy and a special diet that advocates say can treat the disease. The actress has been helping support The Charlie Foundation to Cure Pediatric Epilepsy since working on a 1997 TV movie about the issue with director Jim Abrahams , whose son had the disease. Streep says it's "unconscionable" more people aren't being told about the high-fat and low-carbohydrate ketogenic diet. Advocates say it can help reduce the frequency of epileptic seizures. The (Arlington Heights) Daily Herald reports that ( http://bit.ly/SdXrXZ ) Friday night's event in the western suburb of Bloomingdale was part of a four-day international symposium on dietary therapies for neurological disorders.