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Cystic Fibrosis Trust

CF Week

Join us from 18-24 June for the biggest, brightest CF Week yet. Remember to don your sunniest outfit for Wear Yellow Day on Friday 22 June!


Dig deep

Play a lottery, join the raffle - or just make a good old-fashioned donation!

Donate now

Mellow yellow

Find out more about our famous #WearYellowDay selfies, including some inspiration from last year's day.

Snap a Yelfie

Travel back in time...

Check out a summary of all the exciting research we explored as part of last year's CF Week, when we asked:

What the CF?!