Final answer:
Performing a self breast exam monthly is crucial for the early detection of changes like lumps, which may be indicative of breast cancer. Beginning these exams at a young age helps women recognize what is normal for their body and facilitates timely medical intervention.
Step-by-step explanation:
It is important to perform a self breast exam monthly because this practice can help in early detection of breast cancer, which is crucial for a better outcome and treatment success. Although breast cancer is rare in teens, starting early helps young women know what is normal for their bodies so that they can notice any unusual changes such as lumps. Early detection of these changes can lead to early intervention, precisely when the chances for a cure are greatest.
Regular self-exams become a proactive approach in a woman's health routine. Not only do they empower women to understand and monitor their own bodies, but they also complement routine medical screening like mammograms, especially for those with risk factors such as a family history of breast cancer or genetic predispositions indicated by mutations in genes like BRCA1 or BRCA2.