Raspberries are low in calories too, and an excellent source of fibre and vitamins. Raspberry ketone is a substance naturally found in raspberries and other berries like cranberries, kiwis and blackberries. The raspberry ketones are known to break down fat within cells where fat is formed, thereby helping your body burn faster. It also increases the hormone adiponectin that helps to regulate metabolism  .
A few years back, the authors of Eat This, Not That! commissioned ChromaDex laboratories to analyze 14 different bottled green teas for their levels of disease-fighting catechins. While Honest Tea Honey Green Tea topped the charts with an impressive 215 milligrams of total catechins, some products weren’t even in the game. For instance, Republic of Tea Pomegranate Green Tea had only 8 milligrams, and Ito En Teas’ Tea Lemongrass Green had just 28 milligrams, despite implying on its label that the product is packed with antioxidants.