According to the book "Primal Panacea," a powerful cure-all was always flowing through the blood vessels of prehistoric people. Because of this substance, which is made in the liver, they were protected from a long list of health problems that were rare causes of death until recently. Most of us no longer have this cure-all because of a mistake in our genes. This makes us more likely to get cancer, heart disease, osteoporosis, dementia, diabetes, and many other expensive and often deadly diseases. Several studies have shown that when this substance is in the bloodstream in enough amounts, it still heals and protects. Dr. Levy writes in an interesting and easy-to-read way about the history and science of the "primal panacea." He does this by citing more than a thousand of these reports that have already been written. He also talks about how our ancient ancestors raised their blood levels and how we do it now. "Primal Panacea" is full of proof, resources, and helpful tips on how to boost our health.