People are getting interested in this type of supplement for a number of reasons. Many of these are based on the idea of holistic health – that your mind and body are connected, and that you can help one by helping the other. Another is the practice of herbalism, which has been a part of the human experience through many millennia, although it's kind of getting sidelined by big pharma. Herbalism is legal, though, it's often seen as a great proactive way to live naturally.