The researchers studied data from an existing cohort of Seventh-Day Adventist men and women. Search online for "Seventh-Day Adventist" and "health." Why did the researchers choose to use data collected from members of this particular religious group?

Many Seventh Day Adventist Church believe in The vegetarian diet.

Explanation:

The Seventh day Adventist Church is a Protestant Christian Denomination church. It is different from other church because they conduct their services on Saturday, although they still believe in Jesus Christ, His coming, Trinity and other things the other churches believe in.

Another notable thing about this church is that it is known for its emphasis on diet and health, its "holistic" understanding of the person, the church promotes religious liberty, and has conservative principles and lifestyle.

Because of their interest in Diet and health, her members are encouraged to be vegetarians and to do all they can to remain healthy.

This is why the researchers would want to use data collected from her members.

The researchers choose to use data collected from members of Seventh Day Adventist men and women because they are unique, they eat best food(good diets and avoid some unhealthy diets. They used to live longer life

Explanation:

Seventh - Day  Adventist members have usually avoid some unhealthy foods certain fish, meat from pig and other stuffs that can endanger their life. their health is very paramount to them and they usually live longer life.  

could you go a bit more in depth with you question? it's quite hard to understand. as soon as you do that i will be glad to : )