The Seventh-Day Adventist Church is a worldwide faith-based organization headquartered in Silver Spring, Md. The church was founded in Washington, N.H., in 1844. The organization has nearly 10 million members located in virtually every country of the world and less than 10 percent of Seventh-day Adventists live in the United States. The church takes a special interest in health concerns. It has played a role in researching the dangers of smoking and diets rich in cholesterol and fats. Dr. John Kellog, founder of Kellogg's company and a major supplier of breakfast cereals, was a well-known member of the church. SDA also promotes plans to help people quit smoking and consuming alcohol. Members sponsor cooking classes, heart disease teams, narcotics education outreaches and disaster teams. There are approximately 155 SDA hospitals and 276 clinics in the world. Many congregations have a Dorcas Society that provides food and supplies to the needy. SDA currently operates 92 post-secondary institutions, nearly 1,000 secondary schools and more than 4,000 elementary schools and kindergartens.