The plaintiff must establish a general causation and specific causation. A general causation addresses if a reliable scientific basis exists to determine if the substance can cause the harm alleged while the specific causation addresses the existence of a reliable scientific basis to show that the substance did in fact cause the harm. Determining both of these causations are important in establishing a favorable judgment. In addition, plaintiffs could often rely on experts who conduct a differential diagnosis. Depending on the court, this method may increase favorability since some courts agree that this constitutes sufficient foundation. Since this provides sufficient foundation, this allows for scientific testimony.
