When it comes to the Mayo Clinic Diet, the name behind the diet belongs to one of the most respected medical organizations in the world, so it's no surprise the diet is popular.
Confidence votes 680. As of September 30th, 2011, there are roughly 2,889,000 WWII veterans alive in the USA according to the U.S. Department of Veteran Affairs. Worldwide, there are about 5,250,000 still around as of late 2011.
It was apparently based on an estimate that 800,000 Vietnam-era veterans had died by 2000. That number was reasonable: About 9.2 million Americans served in the military during the Vietnam era (1964-75), so that would mean about 8 percent of them had died and 92 percent were still alive.