Complex sentence: Adventists are known for presenting a "health message" that recommends vegetarianism and advocate adherence to the kosher laws in, the observance of which means abstinence from pork, shellfish, and other animals proscribed as "unclean".
Split into simpler sentences: Adventists are known for presenting a "health message" that recommends vegetarianism and advocate adherence to the kosher laws in. The observance of which means, abstinence from pork, shellfish, and other animals proscribed as "unclean".