This condition — the plain-language one-pager.

What is Cystic Fibrosis?Diagnosis

Cystic Fibrosis (CF) is a genetic disease that causes thick, sticky mucus to build up in the lungs, pancreas, and other organs. Once a childhood-only diagnosis with a short life expectancy, CF has been transformed by CFTR modulators (Trikafta/Kaftrio is the headline). The median survival now exceeds 50 years and rises every year. Modern CF care is a multi-system, lifelong program — but the people on it are doing better than any prior generation.

• Classic features — Chronic productive cough, recurrent lung infections (Pseudomonas, Staph aureus), nasal polyps, pancreatic insufficiency (steatorrhea, malabsorption), CF-related diabetes, infertility (especially men), sweat chloride test >60 mmol/L.
• Diagnosis — Newborn screening (universal in the US), sweat chloride test, CFTR genetic testing. Some adults are diagnosed late with mild CF or CFTR-related disorders.
• Modern CFTR modulators — Trikafta/Kaftrio (elexacaftor/tezacaftor/ivacaftor) works for ~90% of CF patients (those with at least one F508del mutation). Dramatic improvements in FEV1, weight, sweat chloride, and exacerbation rates. Plus ivacaftor (Kalydeco) for gating mutations and other modulator combos.
• Standard daily care — Airway clearance (nebulized hypertonic saline + dornase alfa, vest therapy, exercise), inhaled antibiotics for chronic Pseudomonas (tobramycin, aztreonam), pancreatic enzyme replacement with every meal, fat-soluble vitamins (ADEK), high-calorie/high-fat diet, CF-related diabetes monitoring.

Trikafta has rewritten CF — but the daily program still mattersKnow your plan

CFTR modulators are one of the great medication wins of modern medicine. They do not replace the daily airway clearance, enzymes, vitamins, exercise, and infection vigilance. Patients who continue the full program on top of modulators do best.

• Take Trikafta (or your modulator) every day, with food containing fat for absorption. Missing doses — even briefly — degrades benefit.
• Continue airway clearance daily — hypertonic saline + dornase alfa + vest or PEP device. Even when you feel great, mucus builds up.
• Pancreatic enzymes with every fat-containing meal/snack — dose by lipase units per gram of fat. Micronize particles. Without enzymes, weight and nutrition slip.
• Vaccines + infection awareness — flu, COVID, pneumococcal annually. Avoid known CF pathogen exposures (Pseudomonas, B. cepacia, NTM); separation from other CF patients per care center policy.
• CF center care, every 3 months — labs, PFTs, sputum cultures, dietitian, social work. The model that delivers modern survival.

Your daily Force FieldLive It

• Trikafta daily with fatty food — and your other CFTR modulators if prescribed.
• Airway clearance every day — hypertonic saline 7%, dornase alfa, vest 2x/day, exercise as your "third therapy."
• Inhaled antibiotics if chronic Pseudomonas — tobramycin or aztreonam in alternating cycles.
• Pancreatic enzymes with every meal/snack containing fat; ADEK vitamins daily.
• High-calorie, high-fat eating — most CF patients need 110-200% of standard calories. Work with a CF dietitian.
• Hydration + salt liberalization — CF sweat is salty; replace.
• CF-related diabetes screening yearly — OGTT from age 10. Insulin if positive.
• Vaccines current; no smoking; vigilance for new infections.
• Quarterly CF center visits — PFTs, sputum, labs, comprehensive review.
• Mental health + support — depression and anxiety screening yearly; CF community matters.

Red flags — call nowAction

• Call your clinic the same day for: new chest discomfort with exertion that goes away with rest (stable shortness of breath worth evaluating); a missed dose of antiplatelet or pulmonary medication; medication side effects (muscle aches, bleeding, GI symptoms).
• Bring up at next visit: any change in exercise tolerance, lipid follow-up timing, BP log review, smoking-cessation support, depression screening, sleep concerns.