Well, I'd say cancer is the ultimate and most likely its not cancer. Detoxing the body can cause dramatic weight loss very very quickly. Its because most toxins make you hold on to weight and when you remove cellular/body toxins the weight comes off immediately. Other weight loss causing things are parasites and adrenal fatigue. When you cleanse it burns the adrenals... If theres parasites; parasites also work the adrenals. Burnt adrenals=weight loss.