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.
Dental Cheek Retractors. Access to the working area is among the first steps of dental procedures ranging from surgical implant placement to cosmetic teeth whitening, and the use of a cheek retraction system is a great way to help the patient keep his or her mouth open while youâre working.