Final answer:
Routine mammogram screenings start at age 50, but women between 30 and 40 should still be educated about early detection.
Step-by-step explanation:
According to recommendations from the American Cancer Society, it is important for women between the ages of 30 and 40 to be aware of early detection of breast cancer. While routine mammogram screenings start at age 50, younger women should still be educated about the importance of self-exams.