Tofu fans have known it for decades, but as a recent study proves, low-cost, high-protein soyfoods can clobber cholesterol. Now soy's also serving to stave off malnutrition in Cuba, where economic problems have shrunk the availability of other staples such as meat and dairy products. The citizen diplomat travel group Global Exchange has launched the Soy Cubano! program, in which shareholders fund soy planting and soyfood processing in Cuba. It's working -- Cubans have just harvested 20 tons of seeds. Shareholders can also make a statement with their purchase -- some shares were recently purchased in the name of Sen. Jesse Helms, co-sponsor of a bill blocking trade with Cuba. Global Exchange available from 2017 Mission #303, San Francisco, CA 94110.