hello there my name is olivia im 18 with c.f. and i was diagnosed when i was 12yrs old. you are born with c.f. but wether or not you are diagnosed at birth or not all depends on the kinds of symptoms you have. like when i was younger i really didnt have any symptoms at all. so thats why they didnt find out till i was 12. bc i had gotten sick and just never had gotten better from it. so i was put in the hospital and test after test they found it. its found by a sweat test. i do not take as many pills as destina. i do take enzymes for my stomache bc i have a harder time digesting food.i always do 2 treatments a day 30mins aday. im sure if your friend has it, she also has to do that? i dont know all about peer pressure b/c if someone asks me to smoke or what not . even before i foudn out about my c.f. i was very strong about not smoking or doing drugs... bc honestly they are just stupid. but what i found out. is teenagers are very mean. i had so many friends... but once they foudn out about c.f. no one wanted to deal with it... or accepted, but i did find out my true friends who r still with me today. if you would liek tot alk more please feel free to email me at livvielulu1716@yahoo.com