It works within the first few days. After being on Nutrisystem for over a year, I lost 50 pounds! The day after that Easter, I was nervous about stepping on the scales. How Quickly Does Nutrisystem Work? I would often kid around with my husband by telling him that he was actually only married to half of me.
There are actually a whole bunch of studies in rats showing that Garcinia Cambogia consistently leads to significant weight loss (3, 4, 5, 6). However, what works in rats doesnt always work in humans.
Bottom Line: Studies in rats show that the active ingredient in Garcinia Cambogia can inhibit a fat producing enzyme called Citrate Lyase and increase serotonin levels, leading to significant weight loss.