Studies have actually revealed that high cortisol degrees can raise hunger as well as modify metabolic process, resulting in boosted fat storage space (16, 17). One big research looking at the diet plans of 42,696 adults over a five-year period showed that a higher consumption of polished carbs was connected with a greater amount of stubborn belly fat (14 ). These carbs have been heavily refined, stripping them of their helpful nutrients and also fiber as well as leaving little behind besides sugar and calories.