Amla, also known as Indian gooseberries, is one of the highest sources of antioxidants of any known food. Adding just a teaspoon of Amla powder to smoothies can more than double the antioxidant content of the drink. Amla has been shown to reduce and reverse cancer cell growth almost as effectively as chemotherapy drugs in vitro. In one study, only half a teaspoon of amla was able to normalize the blood sugar levels of diabetics while lowering their LDL (bad) cholesterol, raising HDL (good) cholesterol and cutting triglyceride levels in half.