Approximately 3% of the population are carriers of cystic fibrosis. You could be a carrier even if none of your family have the disease and even if you have already had children without cystic fibrosis.

It is possible but is also unlikely. Men suffering from cystic fibrosis are mostly infertile due an abnormality in the vas deferens of the reproductive tract. However, sperm are still produced so techniques can be used for in vitro fertilisation.

No, it is an inherited condition and is therefore present from birth.

No, many people don't realise they are carriers because they don't suffer any symptoms. If there is a family history of the disease a carrier test should be performed before considering having children.

Physiotherapy performed twice a day, along with the correct medication and a strict diet is the best option. Work with your doctor to find a diet plan suitable, which will include high fat and high carbohydrates. Also ensure enzyme supplements are taken befoe each meal to aid digestion of food and absorption of nutrients.

There are several websites which take donations for CF research. Try visiting www.cff.org