TrimTone There are many rumours out there that it is the best diet to lose weight fast but it comes at a price. The 2019 Ultimate Guide to TrimTone Diet includes the types, how to choose the best, the benefits and side effects of TrimTone Diet. TrimTone Diet involves a radical restriction in daily carbs consumption. This metabolic state is known as TrimTone.” In other words, TrimTone results in the body when there is an absence of carbohydrates. As you continue to live on a carbohydrate-reduced diet , fat metabolism leads to the build-up of TrimTone in your bloodstream. Metabolized fats in the body are broken down into metabolic by-products known as TrimTone bodies.