3. Green tea
Green tea is often thought of as being the “healthiest” type of tea due to the thousands of studies that extol its health benefits. However, green, black, oolong and white tea all come from the same tea plant, so it’s likely all four types of tea impart similar health benefits.
The combination of epigallocatechin gallate (EGCG) (the main catechin in green tea) and caffeine found in green tea can help increase metabolism, boost fat burning, and help the body retain lean body mass while losing weight.
One study published in Clinical Nutrition reported that individuals on a 12-week high dose green tea extract delivering EGCG resulted in reductions in BMI, waist circumference, and the hunger-hormone ghrelin, as well as elevated adiponectin, the hormone that helps your body utilize insulin better. For a refreshing way to lose some inches off your stomach, add some green tea to your daily routine.
4. Black tea
As mentioned above, there are four types of tea that come from the leaves of the Camellia sinensis plant: black, green, white, and oolong. What makes them different is that white and green teas are not oxidized (fermented), while black tea is allowed to oxidize, making it dark and bold.
The type and amount of catechin polyphenols vary based on the type of tea, but studies suggest black tea may help with weight loss and maintenance. One study published in the journal Food & Function found that among 111 adult study participants, those who had three cups per day of tea for 3 months experienced a significant reduction in body weight and waist circumference. Researchers believe the catechins in black tea increase fat metabolism and may improve the gut microbiome to favor weight loss.
Another study reported in Nutrition Research found that among overweight or obese Japanese subjects, those who were given black tea extract three times daily with a barley tea experiences significant reductions in waist circumference and visceral belly fat. The caffeine in tea also can provide a mild lift to your metabolism, which may also help your body burn calories. For the most benefits, drink your tea without added milk or sweeteners.