Hi Lisa, thanks for reading and for your question! I'll check back in the original book I mentioned so get more details. Full disclosure- though most of the sources I cited in this article were medical/naturopathic sites, this particular one was from the "Medical Medium" Anthony William, who is an intuitive. I included him as a source because following his liver protocol almost totally eliminated under-eye bags for me and my Mom, so I included him based on personal experience rather than medical backing.