In addition to legal and social activism, there is another potential powerful tool in addressing a global smoking epidemic: Faith. New studies are adding to a growing body of evidence that religion may help deter smoking, particularly among marginalized groups that have the greatest health risks.

When it comes to guaranteeing freedom of religion, the lesson from extensive global research is that it matters much less what nations say in their constitutions than what they are prepared to do to enforce those laws. As new leaders in Egypt and Libya seek to protect hard-won freedoms, and governments from France to the United States struggle with religious diversity, two studies presented at the recent annual meeting of the Association for the Sociology of Religion in Las Vegas illustrate the challenges ahead. One sign of hope: Even if you do not start out loving them, getting to know your neighbor goes a long way to limiting prejudice, research shows.