If we are talking about potential complications from silicone breast implants I think there are some really great resources out there that discuss the science.

Links to breast implant studies provided by ImplantInfo
FDA home page for breast implant research
General information about breast augmentation complications and risks
Summary of breast implant risks at ImplantForum

Readers should consider the official reports and scientific findings alongside the real patient stories when deciding whether implants are right for them.