Breast Cancer Awareness Month: Are We Doing Enough to Prevent Breast Cancer?
October is Breast Cancer Awareness Month. Each year, we see pink ribbons, fundraising campaigns, and reminders to schedule mammograms. These efforts help raise awareness, support research, and encourage early detection.
But there's another important question worth asking: What can we do to help reduce the risk of breast cancer in the first place?
Breast cancer diagnoses are increasing
According to the American Cancer Society, breast cancer incidence in the United States increased by approximately 1% per year between 2012 and 2021, with a faster increase among women younger than 50.
There is no single explanation for this trend. Researchers are examining multiple factors, including reproductive and hormonal patterns, lifestyle, body composition, inherited susceptibility, and environmental exposures.
Increased awareness and screening help identify cancer, but screening itself does not prevent cancer from developing. That makes it worthwhile to discuss both early detection and risk reduction.
Could environmental exposures play a role?
We encounter many chemicals in our daily lives. Some substances, including certain pesticides, PFAS (often called “forever chemicals”), and specific ingredients in consumer products, have been studied for their potential to disrupt hormone signaling.
Because some breast cancers are influenced by hormones, researchers are investigating whether particular environmental exposures contribute to breast cancer risk.
However, the evidence varies by chemical and exposure. We cannot conclude that these exposures explain the recent increase in breast cancer diagnoses, and not every chemical exposure carries the same level of risk.
There are practical steps you can take without becoming overwhelmed:
Follow appropriate precautions when using pesticides.
Avoid heating food in plastic containers unless they are labeled for that use.
Choose personal care products thoughtfully if you wish to reduce exposure to certain ingredients.
Follow reliable public health guidance about PFAS and other environmental contaminants.
The goal isn't to eliminate every possible exposure. It's to make reasonable, informed choices as evidence develops.
Metabolic health and breast cancer risk
Metabolic health is another important part of the conversation.
Insulin resistance, high blood pressure, abnormal cholesterol, and excess body weight often occur together, but they are distinct conditions. Some metabolic risk factors have clearer associations with breast cancer than others.
For example, excess body fat after menopause is an established breast cancer risk factor. Type 2 diabetes has also been associated with increased risk in research studies.
Several mechanisms may contribute, including changes in estrogen production, insulin and insulin-like growth factor signaling, and chronic inflammation. The importance of each mechanism varies, and an association does not necessarily prove direct causation.
Supporting metabolic health is worthwhile for many reasons, even though it cannot guarantee that breast cancer will be prevented.
Everyday steps that support health
1. Emphasize whole foods.
Build meals around vegetables, fruits, legumes, whole grains, nuts, and other minimally processed foods. A balanced dietary pattern supports overall metabolic health.
2. Stay physically active.
Regular physical activity is associated with lower breast cancer risk. Choose activities that are sustainable and appropriate for your abilities.
3. Maintain a healthy weight.
Weight management is particularly relevant to breast cancer risk after menopause. Focus on sustainable habits rather than extreme diets.
4. Limit or avoid alcohol.
Alcohol consumption is an established breast cancer risk factor. Reducing intake can lower alcohol-related risk.
5. Prioritize sleep and stress management.
Adequate sleep and effective stress-management strategies support general health. However, evidence that improving sleep or reducing stress independently prevents breast cancer is less definitive than the evidence for established risk factors.
6. Know your family history.
Breast cancer in close relatives, particularly at younger ages, may indicate increased inherited risk. Some women may benefit from genetic counseling or a personalized screening plan.
Mammograms and other screening options
Mammograms do not prevent cancer, but they can detect breast cancer before it causes noticeable symptoms. Screening can reduce the risk of dying from breast cancer, although it also has limitations, including false-positive results and overdiagnosis.
Screening recommendations differ among professional organizations. The appropriate approach depends on age, personal history, family history, breast density, and other risk factors.
Some women may benefit from additional imaging:
Breast ultrasound: May help evaluate a lump or supplement screening in selected circumstances.
Breast MRI: May be recommended for certain women at elevated risk.
Thermography: Has not been shown to be an effective replacement for mammography.
If you have concerns about mammography, discuss the benefits, limitations, and alternatives with a qualified clinician. A new breast lump, nipple discharge, skin dimpling, or other concerning change should be evaluated even after a recent normal mammogram.
A more personalized approach to prevention
At Hearthstone Family Care, I believe good primary care means taking time to understand the whole person.
That includes reviewing personal and family history, discussing metabolic health and lifestyle, considering relevant environmental exposures, and helping patients understand screening recommendations and individual risk.
We cannot control every factor that influences cancer risk. Genetics matter, and even people who live very healthy lives can develop breast cancer. But we can make informed decisions about modifiable risk factors and appropriate screening.
This Breast Cancer Awareness Month, let's go beyond awareness. Let's talk about prevention, early detection, and the value of personalized care.