When people with severe obesity undergo bypass surgery that seals off part of the stomach, the remaining stomach then produces much less: 1. ghrelin.
The Carrier Strike Group (CSG), composed of roughly 7,500 personnel, an aircraft carrier, at least one cruiser, a flotilla of six to 10 destroyers and/or frigates, and a carrier air wing of 65 to 70 aircraft.
There seems to be a total of 22 active aircraft carriers in the world today, 11 of which belong to the USA. Wiki lists have a discrepancy on the UK, one giving 2 active carriers and another 3. The Royal Navy claims 3 active and 2 under construction. http://www.chinfo.navy.mil/navpalib/ships/carriers/cv-list1.html.