I have Cystic Fibrosis. Recently i became interested in becoming a vegan, my mother doesn’t think it would be ok at all because she says it couldn’t provide me with enough nutrition and I have a hard time keeping enough weight on now even by eating meat and such and eating large meals. Does anyone know if actually could be ok to do? Can my mother be proven wrong? Is there a way I could be vegan and still get enough nutrition? I’m a teenager.

My best friend has cystic fibrosis. He is currently 18 years old and he is very healthy. He eats like a machine and he is about 5 foot 8. He is a very fast runner he plays soccer daily and also run track. Even with this amount of exercise and nutrition is his life expectancy still only around 40 years?