Back to resources Eugene’s Big Book of CF Words Image Discover a glossary of cystic fibrosis (CF) terms from A-Z to help caregivers teach their loved ones about CF in a fun and interactive way. Get Started Other ways to learn: Image Causes and Impact of CF Join Eugene as he explains what causes CF and how it affects the body. Image Visiting the CF Care Center Watch as Billie learns what happens at her CF Care Center.