Oz called Garcinia Cambogia Extract ( HCA) the Holy Grail of Weight Loss. He went on to say, “ Anytime I see a scientist get this excited about something like Garcinia Cambogia Extract and when I looked through some of this research and called these scientists myself, I get excited. That’ s why Garcinia Cambogia Extract makes sense to me and fascinates me. Many people today are choosing to use Garcinia Cambogia for weight loss. Even though eating healthy and exercising are the keys to losing weight, Garcinia Cambogia can.