What does Detox, Cleansing or Fasting really mean and are they meant for me?

Dr. O'Brien talks about the basics of detoxing, cleansing and fasting and discusses which she gravitates towards most with patients.

https://video.wixstatic.com/video/2e2bfe_4e140a1ce94d4e5699434e13c9e21825/1080p/mp4/file.mp4