According to a comprehensive and in-depth analysis conducted by the Pew Research Center, Islam is currently the fastest-growing religion in the world. This surge in growth is not random or incidental but is largely attributed to two key demographic factors: higher fertility rates among Muslim populations and a younger average age compared to followers of other major religions.

These trends are reshaping the global religious landscape in profound ways. As of 2015, Christians remained the largest religious group worldwide, accounting for approximately 31% of the global population. Muslims, at that time, made up around 24%. However, the gap between these two major religious communities is closing steadily and significantly.

Pew’s projections suggest that if current trends continue, by the year 2050, the global population of Muslims will nearly equal that of Christians. The Christian share is expected to experience only a slight increase, rising to around 31.4%, while the Muslim population is projected to grow sharply to nearly 29.7%. This substantial rise reflects the demographic momentum within Muslim communities, where larger family sizes and a youthful population continue to drive expansion.

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