“I know I should get a mammogram… but I’ve heard they can actually cause cancer.”
I hear this more often than you might think. Others worry that mammograms are painful, expose them to too much radiation, lead to unnecessary biopsies, or find cancers that never would have caused problems. Then they look up the recommendations and find that different organizations don’t even agree on when to start or how often to be screened.
It’s no wonder so many women feel confused about what to believe.
Here’s what matters most: breast cancer screening after 40 is one of the most important things you can do for your long-term health. The good news is that the evidence behind screening is much clearer than the headlines often make it seem, and the best screening plan for you depends on factors that are more personal than you might realize.
In this article, we’ll separate myths from facts, explain why the recommendations differ, review the benefits and potential downsides of screening, and help you understand how to make the decision that’s right for you.
Key takeaways
- Major medical organizations now recommend that most women begin breast cancer screening with mammography by age 40.
- Guidelines differ on whether screening should happen every year or every two years, and the right answer may depend on your personal risk factors.
- Breast density, family history, hormonal history, and lifestyle factors all play a role in your individual breast cancer risk.
- Dense breast tissue is common, affects how well mammograms work, and may warrant additional screening.
- Many everyday factors like alcohol, excess weight, and not exercising carry as much or more breast cancer risk than things women tend to worry about most.
- Mammography is the only screening method proven to reduce breast cancer deaths. Ultrasound, MRI, and thermography are not replacements.
- Early detection through screening remains one of the most powerful tools available for reducing breast cancer deaths.
Why does breast cancer screening after 40 matter so much?
Breast cancer is the most commonly diagnosed cancer in women in the United States. It’s also the second leading cause of cancer death among women. [3]
Those numbers are sobering. But here’s the part that deserves more attention: screening mammography has been shown to meaningfully reduce breast cancer deaths. Research suggests that regular mammography screening can reduce breast cancer deaths by 15% to 50%, depending on age group. [9]
For women in their 40s specifically, the evidence has become clearer in recent years. The rate of breast cancer among women aged 40 to 49 has been increasing by about 2% per year. [3] That trend is one of the reasons the largest screening guideline body in the U.S. recently changed its recommendation.
What the updated guidelines mean for you
In 2024, the U.S. Preventive Services Task Force (USPSTF) updated its recommendation to say that all women at average risk should begin screening mammography every two years starting at age 40, continuing through age 74. [3] This was a significant shift. Previously, the USPSTF had recommended that women in their 40s make an individual decision about screening with their provider.
The change was driven by updated evidence showing a greater benefit of screening in this age group than previously recognized. [3]
What do the different organizations actually recommend?
This is where the confusion often starts. Several major organizations have weighed in on breast cancer screening, and their recommendations don’t all match.
| Organization | When to start | How often | Notes |
|---|---|---|---|
| USPSTF (2024) | Age 40 | Every 2 years | Through age 74[1] |
| NCCN (2026) | Age 40 | Every year | With 3D mammogram when available[2] |
| ACR (2024) | Age 40 | Every year | Recommends risk assessment by age 25[1] |
| ACS (2015) | Age 45 (option to start at 40) | Annual at 45, every 2 years option at 55 | Shared decision-making for 40–44[1] |
| ACP (2019) | Age 50 (shared decision for 40–49) | Every 2 years | Emphasizes collaborative discussion for women in their 40s[3] |
[3][5][9-11]
The variation can feel frustrating. But the core message across all of these guidelines is consistent: screening mammography saves lives, and most women should be screened regularly starting no later than their mid-40s.
So which guideline should you follow?
There isn’t one universally “correct” answer. The right screening plan depends on your personal risk profile, your values, and a conversation with a provider who knows your full history.
What matters most is that you’re having that conversation, not that you’ve memorized which organization said what.
Could screening become more personalized in the future?
There’s growing interest in tailoring screening to each woman’s individual risk rather than using a one-size-fits-all approach. A large study called WISDOM, published in 2025, tested this idea directly. [8]
The study compared two approaches: annual mammograms for everyone versus a risk-based plan where screening frequency was matched to each woman’s personal risk level. Women at higher risk got more frequent screening (including MRI), while women at lower risk were screened less often. [8]
The results were encouraging. The risk-based approach was just as safe as annual screening. It did not lead to more advanced cancers being found. [8] And when given the choice, 89% of women preferred the personalized approach. [8]
Interestingly, genetic testing changed the screening recommendation for about 10% to 14% of women, and 30% of women found to carry high-risk gene changes had no family history at all. [8][12] That’s a powerful argument for looking beyond family history alone.
The WISDOM study is one of the first of its kind, and a similar study in Europe is expected to report results in 2027. [8] For now, the standard guidelines above still apply. But this research suggests that the future of breast cancer screening may look more personalized, and that’s a good thing.
What factors affect your personal breast cancer risk?
Most women who develop breast cancer don’t have a dramatic family history or an obvious risk factor. [13] That’s an important thing to understand. It means screening matters for everyone, not just women who feel like they’re “high risk.”
That said, certain factors do increase risk. Knowing yours can help guide both your screening plan and your overall preventive care.
Factors you can’t change
- Age. Risk increases as you get older. Most breast cancers are diagnosed in women over 50. [3]
- Family history. Having a first-degree relative (mother, sister, daughter) with breast cancer roughly doubles your risk. A history of ovarian, pancreatic, or prostate cancer in the family may also be relevant. [13-14]
- Genetic changes. Changes in genes like BRCA1 and BRCA2 carry a significantly elevated lifetime risk, estimated at about 70%. Other genes, including PALB2, ATM, and CHEK2, also play a role. [6][15]
- Breast density. Dense breast tissue is linked to about twice the risk of breast cancer compared to non-dense tissue. It also makes mammograms harder to read. [5][16]
- Reproductive history. Starting your period before age 12, going through menopause after age 51, having no children, or having your first child after age 35 are all linked to modestly increased risk. [13][17]
- Prior breast biopsies. Especially those showing abnormal cell growth. [18]
Factors you can influence
- Body weight. For women after menopause, carrying extra weight is linked to increased breast cancer risk, likely because fat tissue produces estrogen. [19]
- Alcohol. Even moderate drinking is consistently linked to increased risk. Research suggests the risk goes up by about 7% for each additional drink per day. [20]
- Physical activity. Regular exercise is linked to lower risk. Current guidance recommends 150 to 300 minutes of moderate activity per week. [18]
Understanding these factors doesn’t mean you need to be afraid. It means you can be informed. And informed women make better decisions about their care.
If you’d like to discuss your personal risk factors in a comprehensive, unhurried visit, book a consultation at hervitalwellness.com.
How much risk are we actually talking about?
One of the most helpful things you can do is put breast cancer risk into real numbers, not percentages that sound scarier than they are.
For an average-risk woman, the baseline chance of being diagnosed with breast cancer in any given year is about 26 out of every 10,000 women. [17][21] That’s the starting point. Everything else adds to or subtracts from that number.
Here’s how common risk factors compare when you look at the actual numbers:
| Risk factor | What the research shows | Estimated breast cancers per 10,000 women per year |
|---|---|---|
| Baseline (average-risk woman, no additional factors) | This is the starting point for a woman with no major risk factors. | ~26 cases |
| 1 alcoholic drink per day | About 10% increased risk. Risk climbs steadily with more drinking. | ~29 cases (~3 extra) |
| Being overweight after menopause (BMI over 30) | About 40–55% increased risk. One of the largest changeable risk factors. | ~37–40 cases (~11–14 extra) |
| Not exercising regularly | Being among the least active carries about 10–12% more risk than being among the most active. | ~29 cases (~3 extra) |
| 2 or more alcoholic drinks per day | About 18–22% increased risk. Heavy long-term drinking raises risk further. | ~31–32 cases (~5–6 extra) |
| Combined hormone therapy (5+ years) | A small increase that grows with duration — about 1 extra case per 1,000 women per year after roughly 5 years. Deaths were not significantly increased. | ~33–36 cases (~7–10 extra) |
[17][21-24]
A few things stand out from this chart. First, the baseline risk is already quite low. Second, everyday factors like drinking alcohol and carrying extra weight after menopause carry as much or more additional risk than things women tend to worry about most. And third, the American Cancer Society estimates that about 30% of breast cancers after menopause can be linked to things women can change, like excess body weight, not exercising, and drinking alcohol. [25]
This isn’t meant to make anyone feel guilty about a glass of wine. It’s meant to show that the things within your control actually matter, and that understanding your full risk picture is more useful than focusing on any single factor.
What is breast density, and why does it matter?
You may have heard the term “dense breasts” and wondered what it actually means. It’s not about how your breasts feel or how firm they are. Breast density refers to the mix of tissue types in your breast as seen on a mammogram. [26]
Dense tissue shows up white on a mammogram. So do tumors. That overlap is the problem. In women with the densest breasts, mammograms may miss nearly half of cancers. [27]
The four categories of breast density
Breast density is grouped into four categories:
- A: Almost entirely fatty. Low density. Mammograms are easiest to read.
- B: Scattered areas of dense tissue. Some dense tissue, but mostly fatty.
- C: Mostly dense. More dense than fatty. Mammograms may miss some cancers.
- D: Extremely dense. Very dense tissue throughout. Mammograms are most limited here.
About 43% of women who get mammograms have dense breast tissue (categories C or D). [26] If you’re one of them, that’s common, not alarming.
What changed with the FDA in 2024
As of September 2024, the FDA requires that all mammography facilities tell patients about their breast density. [3] Your mammogram results will now tell you whether your breasts are “dense” or “not dense” and explain that density can affect how well the mammogram works.
This notification is meant to start a conversation with your provider about whether additional screening might be helpful for you. [26]
Does dense breast tissue mean you need extra screening?
It depends. The NCCN recommends that women with mostly dense breasts consider additional screening, and that women with extremely dense breasts get breast MRI starting at age 50 (with the option to start at 40). [5]
However, the USPSTF has said that there isn’t yet enough evidence to recommend for or against additional screening based on density alone. [3]
This is exactly the kind of nuance that benefits from a personalized conversation with your provider. Breast density is one piece of the puzzle, not the whole picture.
What does a mammogram actually involve?
If you’ve never had a mammogram, or if it’s been a while, knowing what to expect can make the experience less stressful.
The basics
A mammogram is a low-dose X-ray of the breast. During the exam, each breast is briefly pressed between two plates while images are taken. The compression is necessary to spread the tissue and get a clear picture. It can be uncomfortable, but it’s brief.
Is the radiation from a mammogram dangerous?
This is one of the most common concerns women have, and it’s worth addressing directly. The radiation dose from a single mammogram is very low. To put it in perspective, here’s how it compares to other everyday radiation exposures:
| Radiation source | Dose | How it compares to a mammogram |
|---|---|---|
| Single mammogram | 0.4 mSv | — |
| Single chest X-ray | 0.02 mSv | A mammogram is about 20 chest X-rays[1] |
| Round-trip cross-country flight (New York to Los Angeles) | ~0.04 mSv | A mammogram is about 10 round-trip flights[1-2] |
| 7 weeks of everyday background radiation | ~0.4 mSv | About the same as a mammogram[1] |
| Chest CT scan | 7 mSv | About 18 times more radiation than a mammogram[1] |
| Annual background radiation (just from living on Earth) | 3.0 mSv | A mammogram is about 1/8 of what you absorb in a year just by existing[2] |
[1-2][28]
In other words, a mammogram delivers about the same amount of radiation you’d absorb naturally over seven weeks of everyday life. It’s less than what you’d get from a single chest CT scan by a factor of nearly 18. [1-2]
But could that small amount of radiation cause cancer?
A large study looked at what would happen if 100,000 women were screened every year from age 40 to 74. The researchers estimated that screening might cause about 125 breast cancers from radiation over a lifetime, leading to about 16 deaths. But in that same group, screening would prevent about 968 breast cancer deaths through early detection. [13][29] That means the benefit of finding cancers early outweighs the radiation risk by about 60 to 1. [13]
The risk from radiation is even lower with newer equipment, which uses less radiation than older machines. [28] And if you’re screened every two years instead of every year, the radiation risk drops by about five times. [29]
Bottom line: the radiation from mammography is not a good reason to skip screening. The risk is real but extremely small, and it’s far outweighed by the lives saved through early detection.
Can I skip the mammogram and just get an ultrasound or MRI instead?
This is one of the most common questions women ask, especially if they find mammograms uncomfortable, are worried about radiation, or have heard that MRI is “better.” It’s a completely reasonable question. But the answer is important to understand.
Why mammography is still the foundation
Mammography is the only breast imaging method that has been proven in large studies to actually reduce breast cancer deaths. [6][30] That’s a critical distinction. Finding more cancers on an image is not the same as saving more lives. A screening tool needs to find the right cancers, at the right time, without causing too much harm from false alarms and unnecessary procedures.
Eight large studies have shown that screening mammography reduces breast cancer deaths by at least 20%. [6] No other imaging method has that kind of evidence behind it.
What about ultrasound?
Ultrasound can find some cancers that mammograms miss, especially in women with dense breast tissue. When added to mammography, it can detect an additional 4 to 5 cancers per 1,000 screenings. [6]
However, ultrasound has significant downsides as a standalone screening tool:
- It has never been studied as a way to reduce breast cancer deaths. There are no large studies showing that screening with ultrasound alone saves lives. [7][31]
- It produces a lot of false alarms. The positive predictive value of ultrasound is only about 3% to 8%, meaning that for every cancer it finds, it flags many things that turn out to be nothing. That means more callbacks, more biopsies, and more anxiety for things that aren’t cancer. [6]
- No major medical organization recommends it as a replacement for mammography. Every guideline recommends ultrasound only as an addition to mammography in certain situations, not as a substitute. [5][7]
What about MRI?
Breast MRI is highly sensitive. It can detect about 90% to 93% of cancers, compared to about 48% to 63% for mammography and ultrasound combined. [6] That sounds like it should be the obvious choice. So why isn’t it recommended for everyone?
Several reasons:
- Like ultrasound, MRI has never been proven to reduce breast cancer deaths in average-risk women. The studies showing its high sensitivity were done in women at very high risk, like those with BRCA gene changes. [4][6]
- It produces even more false alarms than ultrasound. One study found that adding MRI to mammography for all women nearly doubled the rate of false-positive follow-up recommendations. That means more women being called back, more biopsies, and more worry over things that turn out to be benign. [4]
- It’s expensive and not widely accessible. A breast MRI requires specialized equipment, a radiologist trained in breast MRI, and the ability to do MRI-guided biopsies. Not all facilities have these resources. [5]
- It requires a contrast injection. Unlike mammography and ultrasound, breast MRI requires an injection of a contrast agent called gadolinium. Without contrast, MRI is not sensitive enough to be useful for screening. [5]
For women at high risk (lifetime risk of 20% or more), MRI is recommended as an addition to mammography, not a replacement for it. [5] For average-risk women, the harms of routine MRI screening currently outweigh the benefits. [4]
What about thermography?
Thermography uses a special camera to measure heat patterns on the surface of the breast. It’s painless, involves no radiation, and no breast compression, which makes it appealing to many women.
However, thermography is not recommended for breast cancer screening by any major medical organization. The NCCN states directly that current evidence does not support the use of thermography as a screening tool. [5] The FDA has also warned that thermography should not be used as a replacement for mammography. [5]
The main problem is accuracy. Thermography misses too many cancers and produces too many false results to be reliable on its own. [32] While some newer research is exploring ways to improve thermography’s accuracy, this work is still in early stages and hasn’t been proven in large studies. [33-34]
The bottom line on screening methods
If you’re drawn to ultrasound, MRI, or thermography because you want to avoid radiation or discomfort, that’s completely understandable. But the most effective way to protect yourself is still regular mammography. It’s the only method with decades of evidence showing it actually saves lives.
For some women, ultrasound or MRI may be recommended in addition to mammography based on breast density or risk level. But they don’t replace it. Think of mammography as the foundation, and other tools as additions your provider may recommend based on your individual situation.
3D mammography (tomosynthesis)
Many facilities now offer 3D mammography, also called tomosynthesis. This technology takes multiple images of the breast from different angles and creates a layered picture. Research shows it can reduce callbacks and improve cancer detection compared to traditional 2D mammography alone. [5]
The NCCN recommends mammography with tomosynthesis for screening. [5] If your facility offers it, it’s worth asking about.
What happens after
Most mammograms come back normal. If something looks unusual, you may be called back for additional imaging. A callback does not mean you have cancer. Most callbacks turn out to be nothing to worry about. [26]
If a biopsy is recommended, that’s a more targeted step to look at a specific area. Even then, the majority of biopsies are not cancerous.
Myth vs. fact: what every woman should know
| Myth | Fact |
|---|---|
| “I don’t have a family history, so I don’t need to worry about breast cancer.” | Most women diagnosed with breast cancer have no significant family history.[1] Screening matters for everyone. |
| “Mammograms cause cancer because of radiation.” | The radiation from a mammogram is extremely low, about the same as seven weeks of everyday background radiation. For every 1 woman who might develop cancer from radiation, about 60 women are saved by early detection.[1-2] |
| “I can just get an ultrasound or thermography instead of a mammogram.” | Mammography is the only method proven to reduce breast cancer deaths. Ultrasound can be a helpful addition for some women, but not a replacement. Thermography is not recommended by any major medical organization.[1, 3-4] |
| “MRI is better than a mammogram, so I should just get that instead.” | MRI is more sensitive, but it also produces far more false alarms and has never been proven to save lives in average-risk women. It’s recommended as an addition to mammography for high-risk women, not as a replacement for everyone.[5-6] |
| “If I have dense breasts, I definitely need an MRI.” | Dense breasts may call for additional screening, but the decision depends on your overall risk profile and should be discussed with your provider.[7] |
| “Breast cancer only affects older women.” | Breast cancer rates in women aged 40 to 49 have been increasing, and screening in this age group has been shown to reduce deaths.[8] |
| “A normal mammogram means I’m cancer-free.” | Mammograms are effective but not perfect. Some cancers, especially in dense breast tissue, may not show up. Staying aware of changes in your breasts and seeing your provider regularly remain important.[9] |
[3-7][13][26][29-31]
What are the evidence-based approaches to reducing your risk?
Breast cancer prevention isn’t about eliminating risk entirely. It’s about understanding your personal risk and taking meaningful, evidence-based steps to reduce it where you can.
Step 1: know your baseline risk
The first step is understanding where you stand. Several tools can help estimate your breast cancer risk based on your personal and family history:
- The Gail Model estimates your five-year and lifetime risk based on age, reproductive history, family history, and prior biopsies. [35]
- The Tyrer-Cuzick Model looks at a more detailed family history and is often used for women with a stronger family history of cancer. [36]
- BRCAPRO and CanRisk are used to estimate the chance of carrying a BRCA1 or BRCA2 gene change. [14]
Your provider can help figure out which tool makes the most sense for you and explain what the results mean.
Step 2: follow the right screening schedule
For average-risk women aged 40 and older, the evidence supports regular screening mammography. [3][5] Whether that means every year or every two years depends on your risk level and which guidelines your provider follows.
For women at higher risk, including those with a strong family history, known gene changes, very dense breasts, or a history of chest radiation, more intensive screening may be recommended. This can include breast MRI in addition to mammography. [5][14]
Step 3: address the things you can change
- Maintain a healthy weight, especially after menopause. [19]
- Stay physically active. Aim for at least 150 minutes of moderate activity per week. [18]
- Limit alcohol. Any alcohol increases breast cancer risk. If you choose to drink, limit it to no more than one drink per day and no more than three per week. [18]
A note on supplements
There is no supplement that has been proven to prevent breast cancer. While a healthy diet rich in vegetables, fruits, and whole grains supports overall health, no specific vitamin, mineral, or herbal product has strong evidence for breast cancer risk reduction. [18]
For women at higher risk, prescription medications like tamoxifen or aromatase inhibitors may be discussed with a provider. These carry their own benefits and side effects and are not right for everyone. [18]
When should you see a provider?
Screening is important even when you feel perfectly fine. But there are also specific situations where reaching out sooner rather than later is especially important.
Schedule a screening conversation if:
- You’re 40 or older and haven’t had a mammogram recently.
- You have a family history of breast, ovarian, pancreatic, or prostate cancer.
- You’ve been told you have dense breast tissue and aren’t sure what that means for your screening plan.
- You’re considering or currently using hormone therapy and want to understand how it fits into your overall risk picture.
- You’ve had a prior breast biopsy, especially one showing abnormal cells.
See a provider promptly if you notice:
- A new lump or thickening in the breast or underarm area.
- A change in the size, shape, or appearance of a breast.
- Skin changes on the breast, such as dimpling, puckering, or redness.
- Nipple discharge (especially if bloody) or a newly inverted nipple.
- Persistent breast pain that is new and doesn’t go away.
These symptoms don’t necessarily mean cancer. Most breast changes are not cancerous. But they deserve evaluation, not reassurance without examination.
When to consider genetic counseling
If your family history includes breast cancer diagnosed before age 50, ovarian cancer at any age, male breast cancer, multiple family members with breast or related cancers, or Ashkenazi Jewish ancestry, a referral to a genetic counselor may be appropriate. [14][35]
Genetic testing can identify changes in BRCA1, BRCA2, and other genes that significantly affect risk and may change your screening and prevention plan. [37]
Checklist to bring to your appointment
- Your age at first period and, if applicable, age at menopause.
- Whether you’ve had children and at what age.
- Any history of breast biopsies and the results.
- Your most recent mammogram results, including breast density category.
- Family history of breast, ovarian, pancreatic, or prostate cancer, including ages at diagnosis.
- Current or past use of hormone therapy or birth control pills.
- Your current exercise habits, alcohol intake, and weight history.
You deserve a screening plan that fits your life
October is Breast Cancer Awareness Month. And while the statistics matter, what matters most for you is this: are you up to date on your screening? Do you know your risk factors? Have you had a real conversation about what your personal plan should look like?
The women who seem to “catch things early” are not lucky. They are informed. They have providers who take the time to look at the full picture, not just check a box.
At Her Vital Wellness, breast health is part of every comprehensive women’s health visit. Because your screening plan should be built around you, your history, your density, your family, your hormonal health, and your goals.
You deserve care that plans ahead. Book your virtual consultation at hervitalwellness.com.
Frequently asked questions
When should I start getting mammograms?
Most major medical organizations now recommend starting screening mammography by age 40. [3][5][9] Some suggest shared decision-making for women in their early 40s, but the trend in recent guidelines has been toward earlier, more universal screening. If you have risk factors like a strong family history, your provider may recommend starting even sooner.
How often should I get a mammogram?
It depends on your risk level and which guidelines your provider follows. The USPSTF recommends every two years for average-risk women. [3] The NCCN and ACR recommend every year. [5][9] Women at higher risk may need annual mammograms plus additional imaging like breast MRI. [5]
What does it mean if I have dense breasts?
Dense breast tissue means you have more glandular and connective tissue relative to fatty tissue in your breasts. This is common and affects about 43% of women who get mammograms. [26] Dense tissue can make mammograms harder to read and is linked to a modestly increased risk of breast cancer. [16] As of September 2024, your mammogram results are required to include information about your breast density. [3]
Does having dense breasts mean I need an MRI?
Not necessarily. The NCCN recommends breast MRI for women with extremely dense breasts, starting at age 50 (with the option to begin at 40). [5] For women with mostly dense breasts, additional screening may be considered based on other risk factors. This is a conversation to have with your provider.
Is the radiation from mammograms dangerous?
The radiation dose from a mammogram is very low, about the same as seven weeks of natural background radiation, or roughly 20 chest X-rays. [1][28] A large study estimated that for every woman who might develop cancer from mammography radiation, about 60 women are saved by early detection. [13][29] Newer machines use even less radiation than older ones. The risk is real but extremely small, and it is not a good reason to skip screening.
Can I just get an ultrasound instead of a mammogram?
Ultrasound is not a replacement for mammography. Mammography is the only imaging method proven in large studies to reduce breast cancer deaths. [6][30] Ultrasound has never been studied as a way to save lives through screening, and it produces a lot of false alarms, with only about 3% to 8% of the things it flags actually turning out to be cancer. [6] Major guidelines recommend ultrasound as a supplement to mammography in certain situations, not as a standalone screening tool. [5][7]
What about MRI? Isn’t it more accurate?
MRI is more sensitive than mammography, detecting about 90% to 93% of cancers. [6] However, it has never been proven to reduce breast cancer deaths in average-risk women. It also produces significantly more false alarms, requires a contrast injection, and is expensive. For high-risk women, MRI is recommended in addition to mammography. For average-risk women, the downsides currently outweigh the benefits of routine MRI screening. [4-5]
What about thermography? Can I use that instead?
Thermography uses a heat-sensing camera to look for temperature differences on the breast surface. While it’s painless and involves no radiation, it is not recommended for breast cancer screening by any major medical organization, including the NCCN and the FDA. [5] The main problem is that thermography misses too many cancers and produces too many false results to be reliable. [32] Newer research is exploring ways to improve it, but this work is still in early stages and hasn’t been proven in large studies. [33-34] Mammography remains the most effective screening tool available.
Is a 3D mammogram better than a regular mammogram?
3D mammography (tomosynthesis) can improve cancer detection and reduce the number of callbacks compared to traditional 2D mammography. [5] The NCCN recommends mammography with tomosynthesis for screening. If your facility offers it, it’s worth requesting.
Should I do breast self-exams?
Formal monthly breast self-exams are no longer recommended by most guidelines. However, breast self-awareness is encouraged. This means being familiar with how your breasts normally look and feel, and promptly telling your provider about any changes. [5]
What if I have a family history of breast cancer?
A family history of breast cancer, especially in a first-degree relative, increases your risk. [13] If your family history includes breast cancer before age 50, ovarian cancer, or multiple affected relatives, you may benefit from genetic counseling and potentially more intensive screening. [14][37]
Does alcohol really increase breast cancer risk?
Yes. Alcohol is one of the most consistently identified risk factors for breast cancer that you can change. Research suggests that risk goes up by about 7% for each additional drink per day. [1] One large study found that one drink per day was linked to a 12% increase in breast cancer risk. [2] Current guidance recommends limiting alcohol to no more than one drink per day and no more than three per week, or avoiding it altogether. [3]
Can exercise reduce my risk of breast cancer?
Research supports that regular physical activity is linked to lower breast cancer risk. [3] Current recommendations suggest 150 to 300 minutes of moderate activity per week. Exercise may help reduce risk in part by supporting healthy weight and lowering circulating estrogen levels.
I’m over 40 and have never had a mammogram. Is it too late?
It’s not too late. Starting screening at any point is better than not screening at all. If you’re over 40 and have never had a mammogram, scheduling one is a meaningful step. Your provider can help figure out the right screening plan based on your age, risk factors, and health history.
I’ve heard screening is becoming more personalized. What does that mean?
A large study published in 2025 tested whether matching screening frequency to each woman’s personal risk level was just as safe as giving everyone annual mammograms. [4] The results showed the risk-based approach was just as safe, and 89% of women preferred it. [4] Interestingly, genetic testing changed the screening recommendation for about 10% to 14% of women, and 30% of those found to carry high-risk gene changes had no family history at all. [4-5] For now, the standard guidelines still apply. But the future of screening may look more personalized.
(Telehealth appointments are currently available for patients located in Arizona and New York.)
This information is educational and not a substitute for personalized medical care.
References
Guidelines
- US Preventive Services Task Force. Screening for Breast Cancer: USPSTF Recommendation Statement. JAMA. 2024. [6]
- National Comprehensive Cancer Network. Breast Cancer Screening and Diagnosis Guidelines, v1.2026. [7]
- Expert Panel on Breast Imaging. ACR Appropriateness Criteria: Female Breast Cancer Screening, 2023 Update. 2024. [8]
- American College of Obstetricians and Gynecologists. Breast Cancer Risk Assessment and Screening in Average-Risk Women. Practice Bulletin. 2017. [9]
- NCCN. Breast Cancer Risk Reduction Guidelines, v1.2026. [3]
- ASCO-SSO. Germline Testing in Patients With Breast Cancer Guideline. JCO. 2024. [10]
- USPSTF. Risk Assessment, Genetic Counseling, and Genetic Testing for BRCA-Related Cancer. JAMA. 2019. [11]
- ACR. Practice Parameter for the Performance of Whole-Breast Ultrasound for Screening and Staging. 2024. [12]
Clinical research
- Miglioretti DL, et al. Radiation-Induced Breast Cancer Incidence and Mortality From Digital Mammography Screening: A Modeling Study. Annals of Internal Medicine. 2016. [13]
- Glechner A, et al. Mammography in Combination With Breast Ultrasonography Versus Mammography for Breast Cancer Screening. Cochrane Database of Systematic Reviews. 2023. [14]
- Esserman LJ, et al. Risk-Based vs Annual Breast Cancer Screening. JAMA. 2025. [4]
- Stout NK, et al. Breast Cancer Screening Using Mammography, Digital Breast Tomosynthesis, and Magnetic Resonance Imaging by Breast Density. JAMA Internal Medicine. 2024. [15]
- Gilbert FJ, et al. Comparison of Supplemental Breast Cancer Imaging Techniques: Interim Results From the BRAID Randomised Controlled Trial. Lancet. 2025. [16]
Reviews and other sources
- Bodewes FTH, et al. Mammographic Breast Density and the Risk of Breast Cancer: A Systematic Review and Meta-Analysis. Breast. 2022. [17]
- Arriaga ME, et al. The Preventable Burden of Breast Cancers for Premenopausal and Postmenopausal Women in Australia. Int J Cancer. 2019. [18]
- Floud S, et al. Alcohol Consumption and Cancer Incidence in Women. BMC Cancer. 2023. [2]
- American Cancer Society. Cancer Prevention and Early Detection Facts & Figures. 2025. [19]
- Di Maria S, et al. Understanding the Risk of Ionizing Radiation in Breast Imaging. European Journal of Radiology. 2024. [20]