WASHINGTON, D.C. -- Gallup Polls from 2005 and 2006 show that countries that are more religious tend to have lower suicide rates.
The 2005 and 2006 Gallup Polls asked respondents whether religion was an important part of their daily lives, if they had attended a place of worship in the week prior to polling, and whether they had confidence in religious organizations in their countries. The Gallup Religiosity Index reflects the percentage of positive responses to these three items. A nation's index score speaks to that nation's overall level of religiosity.
Comparing the Religiosity Index scores of different countries with suicide statistics published in 2007 by the World Health Organization reveals a clear pattern: Countries that are more religious tend to have lower suicide rates. For example, whereas the Philippines has one of the world's highest religiosity scores (79), Japan has one of the world's lowest scores (29). Suicide rates in the Philippines are almost 12 times lower than rates in Japan. Paraguayans, who are much more religious than Uruguayans are, also have suicide rates about five times lower than in Uruguay. The United States falls near the middle of the international pack in religiosity, at 61. The United States also falls near the middle of the international pack in suicide rates, having the 32nd highest suicide rate out of 67 countries.
Because recent suicide data were unavailable for many countries, it was not possible to extend this analysis to include more than 67 countries. Despite this limitation, the suicide-religiosity association does not seem to be restricted to any specific set of countries. For example, for the 12 former Soviet Union countries that data were available for, the suicide-religiosity association was even stronger than for the sample as a whole. Most notably, Armenia, Georgia, and Tajikistan have relatively high religiosity scores, especially in comparison with other former Soviet Union countries. All three countries also have low suicide rates. Tajikistan is also notable as one of the few countries in the sample with a substantial Muslim population (Kazakhstan is another). Tajikistan's Religiosity Index score is higher than Kazakhstan's, and suicide rates in Tajikistan are lower than Kazakhstan's rates.
Does religiosity per se truly affect suicide rates? Countries that differ in religiosity often differ in other ways. For example, these same data showed that less religious countries are usually wealthier (e.g., have a higher GDP per capita) than more religious countries. Further, these data showed that suicide rates are also slightly higher in wealthier countries. However, the relation between GDP and suicide is not nearly as strong as the relation between religiosity and suicide. Thus, national wealth cannot explain the connection between religiosity and suicide. Another concern is that countries that are more religious might tend to underreport suicides -- because of subpar medical documentation, or the added social stigma suicide carries in countries that are more religious. However, an analysis focusing only on wealthy countries, where documentation of suicide is likely to be excellent, still reveals a robust association between religiosity and national suicide rates.
A final hypothesis is that greater social capital (collective commitment to social well-being) in more religious countries could be responsible for the lower suicide rates observed in these countries. However, if greater social capital explained why higher religiosity is associated with less suicide, one would probably expect to see lower homicide rates in more religious countries. In these data, however, homicide rates were actually somewhat higher in countries that are more religious.
Do these country-level findings translate into the behavior of individual people? Large-scale studies of individual respondents suggest so. In 2002, statistician Sterling Hilton and colleagues showed that among young men who were actively involved in the Mormon church, suicide rates were three to five times lower than those of either non-members or less active church members. Moreover, in a review of 42 studies of religiosity and mortality, Michael McCullough and associates showed that, compared with less religious people, highly religious people are slightly less prone to mortality from several specific causes, including suicide. Finally, recent respondent level data from other Gallup Polls show that religious people are much less likely than the general public to believe that suicide is "morally acceptable." Perhaps the most extreme example of this comes from France, where 40% of the general population but only 4% of Muslims living in Paris consider suicide morally acceptable.
It is thus possible that religion serves as an antidote to the lack of purpose that can make a desperate act such as suicide seem appealing. Believing in something bigger than oneself may allow some people to hold onto life in a world where people without such a belief sometimes give up all hope. Another possibility is that some religious people may believe that committing suicide jeopardizes their security in an afterlife. Alternately, the human connections that people typically forge in religious groups may serve as a buffer against suicide. Whatever the reason for the religion-suicide link, these results suggest that leaders who wish to understand the well-being of a country must look beyond traditional economic indicators. When it comes to well-being, spiritual concerns may be at least as important as economic ones.
Results are based on telephone and face-to-face interviews conducted in 2006 with approximately 1,000 adults per country. For all of the countries reported here, confidence intervals for mean Religiosity Index scores were within + 3 percentage points from the national percentages shown here. In addition to sampling error, question wording and practical difficulties in conducting surveys can introduce error or bias into the findings of public opinion polls.