Drinking carrot juice stimulates the secretion of bile, which can help rev up your metabolism and increase weight loss. Bile is a fluid that helps break down fat and absorb fat- and water-soluble vitamins and minerals. Carrot juice is also a great source of vitamins B complex - vitamins B1, B2 and B6. These B vitamins play an important role in fat and protein metabolism, as well as lower stress and depression - all of which may contribute to weight loss and muscle building.
Before menopause, many women carry excess weight on their hips and thighs. But once "the change" happens, estrogen levels plummet, and even formerly pear-shaped women can develop round tummies. Meanwhile, testosterone drops, too. "By losing testosterone, you lose muscle mass. And when you lose muscle mass, it slows down your metabolism," says Steven A.R. Murphy, MD, an assistant professor at New York Medical College. "It becomes much harder to process simple carbohydrates, and that leads to fat storage."
While carrots themselves are highly nutritious, it is claimed that juicing makes the vegetable juice more nutrient-dense, helping you keep nourished while you’re on the go - compared to raw carrots. What’s even more, carrot juice is very low in calories and quite filling due to high fibre content. Hence, carrot juice is an excellent substitute for sodas and other sugar-sweetened beverages when trying to drop the pounds or get rid of that unhealthy belly fat faster. Read - Rice diet plan for weight loss: Does eating Basmati rice help you lose belly fat?
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  .
The stress hormone cortisol can really screw with your belly. The problem with cortisol is two-fold: First, the chemical makeup of cortisol causes the body to store visceral fat. Visceral fat is stored between your main organs and in the midsection and is the most dangerous type of fat. Experts state that visceral fat increases the risk of diabetes and heart disease.