My husband is 52 years old and has d508 and r117. He rides his bike and swims regularly. His health has declined in the last year and he medically retired. He stays active and says that is key. He currently uses Oxygen at night, takes nebulizer treatments with hypertonic saline and Albuterol, he uses vest therapy which has really helped bring up secretions. He even participates in a triathlon in the summer. Swimming seems to open his lungs up and he feels he can breath better. No reason we know of why this works but it does so we just go with it. He says all people with CF should swim. You must quit smoking...for your child and so that you will be healthy to take care of your child. Kevin is also pancreatic sufficient and he does not take enzymes.