Christianity has over 1.7 billion followers and is the world's single largest religion. There are more than 300 denominations within Christianity, but most belong to the Roman Catholic, Protestant, and Eastern Orthodox Churches. The Roman Catholic faith asks its followers to refrain from placing material possessions above God and others. Protestants believe that salvation comes from faith in God and that hard work gives glory to God. Islam is the world's second largest religion.
Religion strongly affects the kinds of goods and services acceptable to Muslim consumers.
Hinduism is the world's oldest religion and is considered by some to be a way of life rather than a religion. Hindus do not eat or willfully harm any living creature because it may be a reincarnated human soul. McDonald's has removed all beef products from its menu and prepares vegetable and fish products in separate kitchen areas. Buddhism has approximately 311 million followers. Followers seek nirvana through charity, modesty, compassion for others, restraint from violence, and general self-control.