Being one of the most common cancers among women, breast cancer accounts for 30% of cancer cases in females every year. The American Cancer Society explains that breast cancer occurs in middle aged women and older women, the median age of diagnosis being 62 years of age. The average risk of developing breast cancer in women happen to be about 13%. Which means there is a 1 in 8 chance that a woman can develop breast cancer. The best cure is prevention, and a new study shows that screening for breast cancer is the best way to tackle the disease. While there are treatments after diagnosis, they not only drastically decrease the quality of life a person is used to, but they must also go through a grueling process, with less chances of survival. One of the best ways to increase your chances of survival in breast cancer is to catch it early. However, by the time symptoms start appearing, the cancer has usually spread, which makes treating it much more difficult. The study, published recently in Radiology Imaging Cancer, found that almost three out of four women (73%) in their 40s only discover they have breast cancer after symptoms appear. This is a significant problem because these women are less likely to survive compared to those whose cancer is found early through screening methods like mammography. For instance, the study showed that women diagnosed due to symptoms were six times more likely to have advanced cancer, which is much harder to treat. Researchers noted that the results show patients whose breast cancers were detected because of symptoms had a 63% higher likelihood of dying. Symptoms vs. Screening To conduct the study, researchers tracked 821 women aged 40 and older who were diagnosed with breast cancer at The Ottawa Hospital in 2016.They found that half of these patients (50%) were diagnosed because of symptoms (like a noticeable lump, skin or nipple changes, nipple discharge, swollen lymph nodes, or breast pain), rather than through early detection by a mammogram. The study revealed that breast cancers detected by symptoms, rather than screening, were much more common in: Women in their 40s, accounting for 73% of cases.Women older than 75, with about 70% discovering cancer after symptoms appeared.The researchers also reported that deaths were higher among patients whose breast cancer wasn't caught early through screening.Shifting Guidelines for Mammograms This research comes at a time when both the U.S. and Canada are re-evaluating the best age for women to begin regular mammograms. Last year, the U.S. Preventive Services Task Force updated its recommendations to suggest breast cancer screening every two years for women aged 40 to 75. Similarly, the American Cancer Society now advises women aged 45 to 54 to get annual mammograms, with the option for women in their early 40s to start screening if they choose. Experts noted that this difference in guidelines can impact how long Canadian women might live with undetected breast cancer. She observed a concerning trend in her own practice, seeing many women under 50 and over 75 being diagnosed only after developing symptoms. These study results will likely bolster the push to lower the breast cancer screening age to 40 in both the U.S. and Canada. Experts mentioned that many provincial and territorial screening programs in Canada have already lowered the screening age, with a goal to establish a single national policy for screening.