Teaching breast self-care as breast changes occur in the adolescent girl ca
n influence positive behaviors such as performing breast self-examinations
and seeking regular professional breast examinations. Health promotion beha
viors often are taught in high school, but little research has been perform
ed on teaching breast health in a high school setting. Therefore, this desc
riptive study aimed to identify the beliefs, knowledge, and practices of br
east self-examination in adolescent girls. A pre- and posttest design was u
sed to determine whether a teaching program would change beliefs, knowledge
, and practices of breast self-examination. The results of this study demon
strate that a one-time intervention can be successful in increasing breast
self-examination practice and the knowledge of breast self-examination and
cancer in adolescents. Before the intervention, approximately 66% of studen
ts said they never examined their breasts, and only 3% performed breast sel
f-examination monthly. In 1 month after teaching, these percentages changed
appreciably, with 32% of students reporting that they never practiced brea
st self-examination and 23% reporting that they practiced breast self-exami
nation monthly.