She is widely known for her work regarding the dangers and health risks associated with vaccines in her two DVD presentations, "Vaccines: What CDC Documents and Science Reveal" and "Vaccines: The Risks, the Benefits, the Choices." Dr. Tenpenny's research makes it clear that, according to government documents and published medical literature, many of the nation's leading public health officials know that vaccines are neither safe, nor do they prevent infectious diseases. In fact, the opposite has been demonstrated to be true: Vaccines are unsafe and have been linked to epidemics of chronic illnesses and developmental anomalies currently plaguing Americans.