Ep 29: Metabolic Health & Breast Cancer

In this episode of Reset Recharge, hosted by Dr. Komal Patil-Sisodia, a triple board-certified endocrinologist, the focus is on the relationship between metabolic health and breast cancer. Dr. Komal explains how factors like obesity, insulin resistance, and lipid levels can influence breast cancer risk. She emphasizes the importance of lifestyle changes, such as sustained weight loss and regular exercise, in reducing this risk. The episode also explores the role of medications like statins, metformin, and GLP-1 receptor agonists in managing metabolic health and potentially lowering breast cancer risk. Practical tips for improving metabolic health and the importance of personalized medical consultations are also discussed.

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Audio Stamps:

00:00 Introduction to Reset Recharge

00:55 Understanding Metabolic Health and Breast Cancer

02:10 Key Metabolic Risk Factors

03:36 Lifestyle Changes for Reducing Risk

05:16 Blood Sugar and Cholesterol Connection

06:45 Pharmacologic Allies in Cancer Prevention

10:57 GLP-1 Receptor Agonists: The New Frontier

12:50 Practical Tips for Better Health

14:25 Conclusion and Final Thoughts

References :

1. Ligibel JA et al., J Clin Oncol. 2022; MA.32 trial.
2. Borgquist S et al., JAMA Oncol. 2021; Statins and breast cancer outcomes.
3. Orgel E, Mittelman SD. Trends Cancer. 2020; Obesity and insulin resistance.
4. NCCN Guidelines: Weight Management and Cancer Prevention (2024).
5. Li X et al., Lancet Diabetes Endocrinol. 2023; GLP-1 RAs and cancer safety.

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Transcript

Dr. Komal Patil-Sisodia 0:02

Welcome to Reset Recharge, the podcast where women's health takes center stage. I'm your host, Dr. Komal Patil-Sisodia, a triple board certified endocrinologist and women's health expert. This show is all about empowering you with the knowledge to understand your metabolic health, navigate hormonal changes, and feel confident in the conversations you're having with your healthcare provider. Whether you're managing symptoms, exploring treatment options, or just want to feel more in tune with your body, you're in the right place. As a physician, my goal is to educate on this podcast. The content shared here is for informational purposes only and should not replace personalized medical advice. If something we discuss resonates with you, please talk to your healthcare provider at your next visit. Now let's dive in and help you reset, recharge, and take control of your health. Imagine two women in their fifties both have the same mammogram results, the same family history, even similar diets, but one has a little more belly fat, slightly higher blood sugars, and a cholesterol profile that her doctor says is quote, something to keep an eye on. Fast forward 10 years and one is diagnosed with hormone receptor positive breast cancer. The difference metabolic health, what's happening inside the body. Your insulin, glucose, and lipid metabolism can quietly shape your cancer risk more powerfully than you might think. Today we're diving deep into that connection and how modern tools from lifestyle changes to medications like statins, metformin, and GLP one receptor agonists are reshaping the conversation on metabolic health and breast cancer prevention. Welcome to Reset Recharge, the show where we bridge science, medicine and mindful living to empower you towards better health. I'm Dr. Komal Patil-Sisodia, and since October is breast Cancer Awareness month, I wanted to bring you this episode that explores the metabolic blueprint of breast cancer. What drives risk, what's reversible, and how new research is rewriting our prevention playbook. Let's start with what we know. The most significant metabolic risk factors for breast cancer include obesity, particularly what we call central adiposity. So the belly fat that we hang on to. It's not just based on BMI, because there are some people who can have a normal BMI, but a lot of belly fat. Also, what we call visceral fat insulin resistance and hyperinsulinemia are next on the list. These lead to elevated fasting glucose, which comes in at number three, and then rounding out at number four are low HDL and high triglycerides. And number five, which is high blood pressure. When three or more of these risk factors are present, we call this metabolic syndrome, and the science is clear. Each additional factor increases breast cancer risk, especially in postmenopausal women, even women with a normal BMI. But high waist circumference, meaning a larger waist measurement, or Even women with a normal BMI, but high waist circumference face elevated risk because that visceral fat drives hormonal and inflammatory changes that can stimulate tumor growth. The most pronounced effects that we see happen in hormone receptor positive cancers, and those are the ones that have receptors for estrogen and progesterone because. Insulin and estrogen pathways overlap, and this can lead to growth of those cells. Here's the empowering news, though you can reprogram your metabolic health studies show that sustained weight loss, even as little as two kilograms, which is like 4.41 pounds in women over the age of 50, will significantly lower breast cancer risk bariatric surgery. Shows an even stronger protection, largely because people who go through bariatric surgery will have massive improvement in their insulin sensitivity, and then they'll have reduced inflammation overall. There are additional studies that confirm weight loss will decrease circulating estrogens, insulin, and C-reactive protein, a key inflammatory marker, and then exercise, particularly vigorous activity. Five plus hours per week is associated with up to a 40% lower breast cancer risk. Five hours is a lot of exercise. That's almost 300 minutes, and our conventional therapy shows that too. Maintain weight, we need 150 minutes of movement per week. To lose weight, we need 210 minutes per week. For most people. Some ethnicities need up to 230, but to reduce breast cancer risk by 40%, that jumps up to 300 minutes, which is quite a bit of exercise, right? That's almost an hour a day for five days out of the week. We have to remember that exercise and nutrition are not cosmetic. They are metabolic therapy. They are going to help decrease breast cancer risk by improving insulin sensitivity and reducing inflammation. Now, how you feel in your body, how you look in your body, if those things are important to you as well, there are added benefits there, which is wonderful. Let's talk a little bit about the blood sugar and cholesterol connection. There are two major, what we call biochemical drivers of breast cancer risk, and those are your glucose levels and your lipid or cholesterol levels. When glucose is chronically elevated, it increases the risk of breast cancer and worsens outcomes. Women with higher hemoglobin, A1C levels, even without diabetes, will have higher recurrence rates. And a lot of this is because tumors thrive on sugar. It's basically like feeding the tumor. So if you have elevated insulin, which is a growth factor that will promote growth of these cells and potentially cancer progression with lipids. Low HDL cholesterol and high triglycerides are especially harmful. This doesn't even account for the LDL. The HDL, which is our good cholesterol, high density lipoprotein acts as an antioxidant and anti-inflammatory molecule. And so in patients where the HDL levels are low, we actually have more oxidative stress on our cells, which can cause damage and lead to progression of cancer cells. On the flip side, improving lipids through diet, exercise, or pharmacologic therapy can reduce both cardiovascular and cancer related events. With triglycerides, those tend to be elevated in people who are insulin resistant, so you kind of can use that as a marker for people who have also have elevated glucose level. So let's talk a little bit about our pharmacologic allies, right? They're not options for treatment of breast cancer or even primary prevention, meaning preventing the breast cancer from occurring in the first place. But there are a few of them that have been associated with decreasing the risk of recurrence, which is huge, right? Because once you're diagnosed, you don't want to go through. Treatment and then have the cancer come back later. It does happen for some, but if you have these metabolic issues, there are options that can help reduce that risk for you. So let's talk about statins, which in my opinion are the unsung heroes on this story. There are decades of research that show that statin use, especially particular statins like Simvastatin and atorvastatin. Are linked to 20% lower breast cancer recurrence risk, reduced breast cancer, specific mortality, and improved overall survival. Those are pretty significant outcomes, and I know they get a bad rap for. Side effects and other things like that. But there is data that shows that they prevent heart disease and now we have evidence that it can improve breast cancer recurrence and mortality, which to me is huge. Right? So the way that this happens is the statins will block. The HMG COA reductase pathway, which is basically how cholesterol gets made in our body, and cholesterol is a precursor. It's like a building block for estrogen. So when that pathway gets blocked, that means there's less building blocks to produce estrogen and drive that tumor growth beyond. Additionally, statins can also suppress inflammation. They can inhibit cell growth and increase blood vessels to the tumor, and then they can actually promote cancer cell death, which is known as apoptosis. There are randomized and genetic studies that suggest LDL lowering medications and mechanisms can also. And like I said before, while statins can offer some degree of protection, the evidence is stronger for preventing recurrence than for the initial diagnosis of cancer. For women who have high cardiovascular risks, statins also offer dual protection for the heart and for the breast. So these medications, while they get a bad rap, they're doing some good things for us. Now, next on the list is metformin. Metformin is one of the most common drugs used for type two diabetes management and has long intrigued oncologists. Early studies showed a lower cancer incidence among diabetes patients who were on metformin compared to other drugs. But there was a landmark trial called the MA 32 randomized trial that found no improvements in invasive disease free survival in non-diabetic breast cancer patients. So in patients who don't have breast cancer, metformin is not necessarily helpful. There is some nuance to this though in women who have HER two positive breast cancer and in women who have insulin resistance at the time of diagnosis. There may be benefit to using metformin, but as kind of like a blanket medication for anybody to prevent breast cancer it is not necessarily helpful. So it's safe and valuable for metabolic control, but not really proven for direct breast cancer prevention. I still think it's worth looking at when either studying or managing this connection between metabolism and cancer. And finally we have the newest player, the GLP one receptor agonist like semaglutide and tirzepatide. These medications mimic a natural gut hormone that regulates appetite and insulin, and they have revolutionized diabetes management and weight management, and they're now actually being studied for oncologic safety and potential benefit. So here's what we know so far. There are meta-analyses of randomized trials that show that there's no increased risk of breast cancer with the use of these medications. And there's some genetic data that even hints that there's a possible reduction in breast cancer risk. Early clinical use in breast cancer survivors shows significant weight loss, better insulin sensitivity, and no recurrence signal. And how they work is that GLP ones will improve metabolic inflammation and lipid metabolism. It's pretty common that I will see patients who have high triglycerides actually have that level lowered when they start a GLP one. Both of those things, metabolic inflammation and lipid metabolism are linked to cancer risk. And when you use the GLP one receptor agonist, it will reduce that cancer risk. So it's important to note that none of these medications are cancer drugs, but for postmenopausal women with obesity or insulin resistance, they offer safe evidence-based metabolic benefits, which will likely translate into lower overall risk of. Breast cancer recurrence. There are also certain subtypes of breast cancer that have increased GLP one receptor expression in the breast tissue. Those tend to be the hormonally driven cancers, and there is a thought that in that particular population, we may see a slightly decreased risk of breast cancer, but we still need a lot more studies to look at that. So what does this mean for you? I have several tips that I want to share with you. The first being, start with your lifestyle. Make sure you're moving daily. Make sure you're managing your stress. Make sure you're sleeping well, and make sure that you are nourishing your body with. Fiber rich anti-inflammatory foods. Having a plant forward diet can really help. If you're eating a lot of fruits and vegetables, you're getting the fiber, you're getting the antioxidants that will help protect your cells, right? So lifestyle is the cornerstone of everything. You're probably sick of hearing me say that over and over again, but it really is true and it's been shown in studies time and time again. Now number two on the list is get regular metabolic screenings. Unfortunately, with how strapped our healthcare system is, a lot of times we put off going into the doctor to get regular checks, but keeping track of your waist circumference, your fasting glucose, your HDL, your triglyceride levels, and your blood pressure will all improve your health, not just from a metabolic perspective, but also possibly from a cancer risk perspective. And then number three, discuss your medications. If you're already on a statin or a GLP one receptor agonist for heart or metabolic health, you should know that they are safe and there are potential additional benefits when it comes to reducing breast cancer risk. And number four, work with your care team. Everybody's metabolic fingerprint is very unique. Our genetics are so different from person to person. What works for me may not work for you, may not work for the next person walking down the street. So we need to tailor interventions to your body's specific needs. I want to close out this episode by driving home one point. Metabolic Health is the missing link between chronic disease and cancer prevention. By improving insulin sensitivity, reducing your belly fat, and optimizing your cholesterol panel, you're not only protecting your heart, but you may be protecting yourself against cancer risk. If today's episode inspired you, share it with someone who could use this message. If you have more questions for me, send them to me through either our fan mail or through the contact form on my website for. References, show notes and metabolic health resources, visit resetrecharge.com. And remember, every healthy habit is an act of self-defense when you're protecting yourself from both metabolic disease and from potentially cancer. Thank you for tuning in today, and I'll see you on the next episode.