Seventh-Day Adventists are members of a Christian denomination that emphasizes the observance of the Sabbath on the seventh day of the week, which is Saturday. They believe in the imminent return of Jesus Christ and focus on health, education, and community service. Their teachings are based on the Bible, and they follow the writings of Ellen G. White, one of their founders. The church was established in the mid-19th century in the United States and has since grown globally. Seventh-Day Adventists promote a vegetarian diet and healthy living, believing that physical well-being is connected to spiritual health. They operate numerous schools, hospitals, and humanitarian organizations worldwide.