By Ariane Sohrabi-Shiraz Belly fat is notoriously difficult to lose, but the key is changing up your diet. You can do as many sit-ups and other abdominal exercises as you want, but without choosing the right foods you’ll find it very difficult to burn the visceral fat, which is located deep within, surrounding your organs. This ‘active fat’ around your belly can lead to an increase risk of high blood pressure, high cholesterol and insulin resistance – again increasing the risk of stroke, heart disease and type 2 diabetes. There are several different diets that claim to help you reduce belly fa…