1 Ghrelin is a fast-acting hormone that plays a vital role in meal initiation and contributes to weight gain. 2  Leptin mediates long-term regulation of energy balance and suppresses food intake, thereby inducing weight loss.  Both hormones can be controlled naturally, primarily though exercise and stress management.
Surgical retractors. A retractor is a surgical instrument with which a surgeon can either actively separate the edges of a surgical incision or wound, or can hold back underlying organs and tissues, so that body parts under the incision may be accessed. The two are each available in many shapes, sizes, and styles.
A single pointed retractor which may be sharp or blunt. Two Gelpie's placed at right angles within a small soft tissue incision allow excellent exposure. Wheatlander's retractors have 2 teeth on one side and 3 on the other. Henderson's retractors are larger and have 3 teeth on one side and 4 on the other. Travis' retractors are larger again and have 4 teeth on one side and 5 on the other. The length of the teeth is variable.