As at December 31, 2011 there were 639 organized Seventh-day Adventist churches and 80 related companies having a total membership of 263, 168 members. A company is a congregation of Seventh-day Adventists that worship together but which has not been organized into a church. In some instances these groups are called organized Sabbath Schools.
101,0000
It depends on who you ask and on what topic. Since Seventh-day Adventists share many beliefs with mainstream Protestant Christianity, on those topics, people in other Protestant churches generally do agree with Adventists. However, regarding beliefs unique to Adventism, many people would likely disagree.
There are a total of 2970 Seventh-day Adventist churches in Mexico. That is not counting smaller groups that meet for church.
42,375
there are probably about more then a million
Given that many Adventists are vegetarians and most advocate a healthy lifestyle, it seems likely.
Seventh-day Adventists have no moral prohibition against eating lamb, though it is true that many are vegetarians.
Estimating the number of Seventh-day Adventists in China can be challenging due to restrictions on religious data collection. However, reports suggest there are approximately 1 to 2 million members of the Seventh-day Adventist Church in China. The church has been growing, particularly through informal worship groups and house churches, despite facing government regulations.
No, Seventh-day Adventists do not believe that you must be a vegetarian to be saved. Adventists do share a health message which is meant to improve quality of life and to help follow the Biblical idea that the body is the temple of God. This health message includes many recommendations, and one of these is vegetarianism. But there are many Adventists, especially outside the United States, who are not vegetarians.
Whether or not an Adventist uses Caffeine or not is simply a personal choice. However, Adventists are known worldwide as a people that emphasizes the health message, and the original diet that God gave to man. To many Adventists, health is very important. Many dedicated Adventists are vegan, and promote disease prevention and a healthy diet. If you want learn more about diet and Adventists, a popular documentary is "The Adventists." It details the Adventism background, how the church got started, and follows the lives of several patients at a popular Adventist hospital in Loma Linda, California.
Seventh Day Adventists, as well as many others, believe that keeping the Sabbath is a religious obligation. They believe that we should keep the Third Commandment as it is written. Similar to the obligation to (for example) building churches, it doesn't matter than humans determine what date it is - what matters is that they mark time in the way that God decrees that they should. Nobody would say that because churches are built by humans, people have no obligation to worship in them.
Seventh day Adventists