Complex sentence: Dr. Paul Baker and Dr. Patrick Baker have authored books about healthy eating and chiropractic care, sponsored events at Cincinnati, Ohio area schools to promote healthy eating habits known as "The 30 Day Fast Food Challenge".
Split into simpler sentences: Dr. Paul Baker and Dr. Patrick Baker are the authors of books about healthy eating and chiropractic care. They have sponsored events at Cincinnati, Ohio area schools to promote healthy eating known as "The 30 Day Fast Food Challenge".