60 years ago a mild cut could lead to gangrene and death. Open heart and brain surgery where unheard of and thought impossible. Diabetes was a death sentence.
In the 1960's Depression was considered a severe mental illness and men and women were institutionalized, as where children with physical disabilities. Even Downs Syndrome kids. Cancer was considered contagious.
My point is that if we don't keep studying them, we'll never figure out what causes it. Just because we haven't found the source yet doesn't mean we won't in another ten years or twenty.
60 years ago a mild cut could lead to gangrene and death. Open heart and brain surgery where unheard of and thought impossible. Diabetes was a death sentence.
In the 1960's Depression was considered a severe mental illness and men and women were institutionalized, as where children with physical disabilities. Even Downs Syndrome kids. Cancer was considered contagious.
My point is that if we don't keep studying them, we'll never figure out what causes it. Just because we haven't found the source yet doesn't mean we won't in another ten years or twenty.