Religion is in decline in most of the world’s major religions, according to a study released Tuesday.
The World Religion Database, which is based on surveys conducted in 190 countries and territories around the world, found the number of adherents to nearly 200 different religions has declined by over 30% since the start of the 20th century.
For example, in 1900, the number was about 50 million.
By 2030, it had dropped to about 10 million.
As the world has become more industrialized and more urban, adherents have grown in China and India, the study found.
More than one-third of the countries surveyed, or 36%, reported at least one religious group that declined.
In China, the decline was greatest among people who identified themselves as Christian.
About half of the country’s Christians say they no longer identify as Christians.
Similarly, in India, Muslims are less likely than other religious groups to identify with any religion.
About a third of Muslims say they do not identify with a religion.
There were no significant changes in other countries.
A new survey by the Pew Research Center found in 2011 that the number one reason people worldwide have given for leaving a religion was not religiousness.
In 2011, people said they were more likely to leave the religion of their parents, grandparents, aunts and uncles, a brother or sister, or a close friend.
Some of the reasons people have given include lack of spiritual meaning, the loss of religious identity, the sense of emptiness or loss of connection to a religious tradition, and the pressure to conform to modernity, according the study.
Even though many people have a personal belief that religion is important, the survey found that the religiousness of religious people is declining, and this is largely due to the growing influence of the Internet and social media.
“This is not the case in every country.
There are many countries where religious groups have become less religious, which reflects the influence of technology and the Internet,” said Thomas Pangborn, director of the World Religion Project at Pew.
While the decline in religiousness among adherents to religions in developed countries is a relatively recent phenomenon, the rise of the digital age has accelerated the process.
According to the Pew report, there were nearly 1.3 billion active users of the web in 2010.
By 2020, that number was nearly 6 billion.
Pew found that in the U.S., the number who say they are “agnostic” is now about three times higher than it was in the 1990s.
That’s an increase of nearly 10% over the last 10 years.
It’s also increasing the number seeking a deeper understanding of religion in their lives.
Pew found that while the number wanting to know more about a particular religious tradition is declining globally, the trend among U.K. Catholics is growing.
The trend has been driven by two things: First, a growing acceptance of the idea that the world of religion is evolving.
Second, a growth in the number and variety of online religious communities that people use to share information about their faith, said Pangbein.
These communities are largely based on Facebook, Twitter and blogs, with little reliance on organized religious groups.
That has allowed them to build bridges and connect with each other.
Pew said the Internet is now allowing people to share and engage in online communities in ways that were not possible a few decades ago.
Among other things, these online communities allow people to “seek out and share information that others may not be able to find on the internet,” the report said.
This is happening even as religion is losing ground, said Michael Rupprecht, director and senior research fellow at the Center for the Study of Religion and Democracy.
He said this is due to a combination of technology, globalization and the growing power of the “post-truth” era, which focuses on facts over emotions.
He also noted that religion, especially in Europe, has suffered from a combination (among other things) from the rise in Islamophobia, which has made some members uncomfortable and other members of religious communities fearful.
One area that is growing is the role of social media in connecting believers to one another, said Ruppecht.
But he said religion in the West has always had a strong cultural connection, and that is changing.
“In the West, the notion that religion should be central to one’s life, or that people should have a religious belief, has been very strong,” he said.
“This is a new reality that we’ve seen in the United States and Europe.”