Studies are showing that more and more young women are being diagnosed with breast cancer.

Doctors say it is still far less common in 25 to 39 year olds, but it is usually found at a much later stage and is often more deadly than in older women.

Doctors at the Cleveland Clinic are trying to figure out what may be causing the results of this latest study.

"We need to ask ourselves are young women having a delay in diagnosis or are there factors in their childhood adolescence that lead to more aggressive forms of breast cancer," said Doctor Holly Pederson, Cleveland clinic.

Doctors say it highlights the importance of self exams even in your 20's.