Health workers say an apparent rise in contraceptive use in Nigeria stems largely from a willingness by traditional and religious leaders in some regions to use their influence in promoting reproductive health. In the predominantly Muslim north, where contraceptive use has historically been far lower than the national average, the support of traditional leaders has helped change attitudes in communities where contraception was long regarded as taboo. Alhaji Sani Umar, district head of Gagi District, Sokoto State, in northwestern Nigeria, works with the UN Population Fund (UNFPA) to advocate reproductive health in his community.