Holy quads, Batman! Research has also shown deficiencies in zinc to be a risk factor for infertility caused by low testosterone levels. T-Boosting Tip: Get your shuck on at happy hour. Just a half dozen oysters on the half shell will provide you with 33 mg of zinc, nearly three times the 12 mg RDA for adult men.
The Roux-en-Y (RNY) gastric bypass surgery, which is currently the most common type of gastric bypass surgery, was first performed in 1967 through open surgery, and uses a Y configuration in rerouting the intestines. The first laparoscopic Roux-en-Y gastric bypass was performed in 1993.
Kirstein performed the first direct laryngoscopy in Berlin, using an esophagoscope he had modified for this purpose; he called this device an autoscope. It is believed that the death in 1888 of Emperor Frederick III motivated Kirstein to develop the autoscope. In 1913, Chevalier Jackson was the first to report a high rate of success for the use of direct laryngoscopy as a means to intubate the trachea.