Finding the cause of cancer is where the real battle lies.

Finding a cause, much like the correlation of HPV with cervical cancer, could lead to a vaccine for breast cancer as well.

Environmental factors and lifestyle need to be explored as major contributing factor to all cancers.

In reality, we still do not know what causes breast cancer, which means we really do not know how to prevent it, either. That has pushed us to focus on looking for cancers that are already there, a practice long based on the assumption that all cancers were the same, grew at a similar rate and were visible in the breast for a period of time before spreading. It made sense: If you could find cancers earlier, you could save lives.