Systems and methods for debulking visceral fat within a subject, include: providing a focused ultrasound transducer configured to focus ultrasonic power at a focal spot; positioning the focused ultrasound transducer with respect to the subject so that the focused ultrasound transducer is enabled to transfer ultrasonic power into the subject; locating the focal spot of the focused ultrasound transducer with respect to at least one target region containing visceral fat within the subject; and debulking visceral fat within the target region by applying ultrasonic energy from the focused ultrasound transducer with sufficient power to cause the death of visceral fat tissue within the target region.