activated charcoal is thought to act as a ` detox ' are you the first to jump on the latest food fad bandwagon ? do you regularly ` detox ' with a green tea or a wheatgrass juice ? or pack your diet full of flax seeds and acai berry - all in the hope of improving your cholesterol , flax seeds are thought to help lower blood pressure and reduce the risk of heart disease , while coconut oil has been hailed as a weight loss aid .