“Low Protein Intake Is Associated with a Major Reduction in IGF-1, Cancer, and Overall Mortality in the 65 and Younger but Not Older Population”

http://www.cell.com/cell-metabolism/abstract/S1550-4131(14)00062-X

“We studied simple organisms, mice, and humans and provide convincing evidence that a high-protein diet — particularly if the proteins are derived from animals — is nearly as bad as smoking for your health,” said the Dr. Valter Longo, Professor of Gerontology/Alzheimer’s Research/Cancer Research, Biological Sciences at the University of Southern California, who is the senior author of one of the papers.