The vaccine targeted ghrelin, a hormone discovered in 1999 that helps control appetite in animals and people.
"It appears that active vaccination against ghrelin is one avenue that can slow weight gain and fat build-up in the body," said Kim Janda, a chemistry professor who helped direct the study.
"The study shows our vaccine slows weight gain and decreases stored fat in rats," Janda added.
[ REUTERS, 31 July 2006]
"In rats." There's still a long way to go before this vaccine sees light in the market.