Apple cider vinegar (ACV) became popular as a supplement in 1958 when D. C Jarvis M.D. published his famous book ‘Folk Medicine: A Vermont Doctors’ Guide to Good Health’ This book was so popular it reportedly sold 245,000 copies in one week alone.

Among other things Davis was promoting the ‘you are what you eat’ mantra which, even though this book is now 60 + years old, the ‘you are what you eat’ idea is still good solid basic advise.