If you’re eating well, exercising, and trying to take care of yourself but still struggling with weight loss resistance, fatigue, anxiety, poor sleep, or unexplained symptoms, hormones may be part of the picture.
On a recent episode of the Frontline Health Podcast, Dr. Lindsay Berkson explains that hormones are much more than reproductive chemicals. They act as the body’s signaling network—what she describes as a kind of physiological Wi-Fi—sending instructions that influence how cells burn fuel, build muscle, regulate mood, maintain body composition, and repair tissue.
When those signals are disrupted, healthy habits may not produce the results you expect. And according to Dr. Berkson, one factor deserves much more attention: endocrine-disrupting chemicals in our everyday environment.
What Are Endocrine Disruptors?
Endocrine disruptors are chemicals that can interfere with the body’s hormone system. Depending on the chemical and exposure, they may mimic hormones, block hormone activity, or alter normal hormone signaling.
These substances can be encountered through everyday sources such as:
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Food and beverage packaging
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Certain plastics
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Personal care and household products
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Water
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Household dust
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Environmental pollutants
Dr. Berkson’s interest in endocrine disruption is also personal. She describes herself as a “DES daughter,” meaning she was exposed in utero to diethylstilbestrol (DES), a synthetic estrogen that was once prescribed to pregnant women before its serious health risks became clear.
Her experience provides a striking example of why environmental exposures can matter long after the initial exposure.
Endocrine Disruptors, Epigenetics, and Long-Term Health
One of the biggest ideas discussed in the episode is epigenetics.
Your DNA isn't necessarily your destiny. Environmental factors can influence how genes are expressed without changing the underlying DNA sequence. Research into endocrine-disrupting chemicals has raised important questions about how exposures during critical periods of development may affect reproductive and metabolic health later in life.
That means hormone health isn't only about how much estrogen, testosterone, or progesterone your body produces. It may also involve how effectively your cells receive and respond to hormonal signals.
For Dr. Berkson, the goal isn't to become afraid of every chemical in the environment. It's to identify meaningful exposures, reduce the ones you can control, and use appropriate testing and medical guidance when symptoms suggest something deeper may be happening.
How Can You Reduce Exposure to Endocrine Disruptors?
You can't eliminate every environmental chemical from your life. Instead, Dr. Berkson recommends focusing on practical changes that can reduce unnecessary exposure.
1. Pay Attention to Your Water
Most people think about the water they drink, but Dr. Berkson also encourages people to consider the water they shower in.
During a hot shower, you're exposed through both skin contact and inhalation of substances that can become airborne. Depending on local water quality and treatment, water may contain various disinfection byproducts and trace contaminants.
For people interested in reducing environmental exposures, a quality shower filter or whole-home filtration system may be worth considering. The right filtration system depends on what's actually present in your local water supply, so reviewing a municipal water-quality report or testing your water can be a useful first step.
2. Reduce Food Contact With Plastics
Plastic is another area where small changes can reduce avoidable exposure.
A particularly simple habit is to avoid heating food in plastic containers. Heat and repeated wear can affect some plastics and potentially increase chemical migration into food.
Consider using glass or stainless steel for food storage when practical, especially for hot foods.
You don't necessarily need to throw away every plastic item in your house. Focus on the behaviors that may create greater exposure, such as repeatedly heating or heavily wearing plastic food containers.
3. Take Your Shoes Off at the Door
One of the easiest recommendations from the episode is to stop wearing outdoor shoes throughout the house.
Shoes can track outdoor contaminants, dirt, pesticides, and other particles onto floors and carpets. Those particles can then become part of household dust.
Creating a shoes-off household is a simple way to reduce how much outdoor contamination enters your living environment—especially in areas where children play or where you spend significant amounts of time.
Can Endocrine Disruptors Affect Fertility?
Researchers continue to investigate the relationship between endocrine disruptors and fertility, including how certain environmental chemicals may interfere with reproductive hormone signaling.
Dr. Berkson discusses how an increasing number of clinicians are taking environmental exposures into consideration when working with patients experiencing fertility challenges. The idea is that improving the body's overall environment and reducing unnecessary chemical exposure may help support normal physiological function.
This does not mean that “detoxing” will cure infertility or replace other evidence-based fertility treatments. Infertility has many possible causes and should be evaluated by a qualified healthcare professional.
However, reducing exposure to known or suspected endocrine-disrupting chemicals can be one component of a broader strategy for supporting reproductive health.
Hormone Health During Perimenopause and Menopause
Hormones don't suddenly become important when menopause begins.
Hormonal changes can start years earlier during perimenopause, and symptoms may include:
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Changes in body composition
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Difficulty sleeping
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Mood changes or anxiety
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Changes in menstrual cycles
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Hot flashes or night sweats
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Reduced energy
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Changes in sexual function
Dr. Berkson argues that looking at hormone health earlier may provide a clearer picture of what is happening physiologically rather than waiting until symptoms become severe.
Depending on a person's symptoms and medical history, a healthcare professional may consider laboratory testing alongside a clinical evaluation. This can include sex hormones and markers such as sex hormone-binding globulin (SHBG).
Importantly, hormone test results should be interpreted in context. A laboratory number alone does not necessarily explain symptoms or determine whether treatment is appropriate.
What Is Bioidentical Hormone Replacement Therapy?
Bioidentical hormones are hormones that are chemically identical to hormones produced by the human body. Hormone therapy may be delivered in several ways depending on the hormone, symptoms, medical history, treatment goals, and clinician recommendations.
Delivery methods discussed in the episode include:
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Topical creams or gels
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Oral medications
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Vaginal preparations
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Injections
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Pellets
There isn't one delivery method that's automatically best for everyone.
Dr. Berkson emphasizes an individualized approach: treatment should be based on the patient's symptoms, physiology, medical history, response to therapy, and appropriate monitoring.
Anyone considering hormone replacement therapy (HRT) should discuss the potential benefits and risks with a qualified healthcare professional.
Why Can Weight Loss Become Harder After 40?
For many adults, losing weight after 40 feels dramatically different from losing weight at 25.
Lifestyle still matters. Nutrition, physical activity, sleep, stress management, and energy balance remain fundamental to healthy weight management. But hormonal changes can influence appetite, muscle mass, fat distribution, insulin sensitivity, sleep, and other factors that affect body composition.
The episode also discusses obesogens, a term used for certain environmental chemicals being studied for their potential ability to disrupt metabolic processes and promote fat accumulation.
This creates a more complete way of thinking about weight loss resistance after 40.
Instead of asking only, “How can I eat less and exercise more?” it may also be useful to ask:
Are hormonal, metabolic, sleep, medication, or environmental factors making it harder for my body to respond?
Hormone Health and Endocrine Disruptors: The Bottom Line
The biggest takeaway from Dr. Lindsay Berkson's conversation on the Frontline Health Podcast is that hormone health doesn't exist in isolation.
Our hormones interact with our metabolism, environment, nutrition, sleep, stress, age, and overall health. Endocrine-disrupting chemicals add another variable that is easy to overlook.
You can't control every exposure, and you don't need to live in fear of your environment. Start with practical steps: avoid unnecessarily heating food in plastic, understand your water quality, reduce outdoor contaminants inside your home, prioritize healthy lifestyle habits, and talk with a qualified healthcare professional if you're experiencing persistent symptoms.
For people struggling with weight loss resistance, fatigue, anxiety, fertility concerns, perimenopause, menopause, or unexplained changes in body composition, investigating hormone health may provide another piece of the puzzle.
Frequently Asked Questions
What are endocrine disruptors?
Endocrine disruptors are chemicals that can interfere with normal hormone signaling. Depending on the substance, they may mimic hormones, block hormonal activity, or alter hormone production, transport, metabolism, or signaling.
Can endocrine disruptors cause weight gain?
Some environmental chemicals are being studied as obesogens because of their potential effects on metabolism, fat-cell biology, and hormonal signaling. Weight gain is multifactorial, however, so exposure to endocrine-disrupting chemicals should not be assumed to be the sole cause of weight changes.
How can I reduce my exposure to endocrine-disrupting chemicals?
Practical steps include reducing unnecessary food contact with heated plastics, reviewing your water quality, choosing appropriate filtration when warranted, regularly removing household dust, and leaving outdoor shoes at the door.
Can hormone imbalance make it difficult to lose weight after 40?
Hormonal changes can affect factors such as muscle mass, fat distribution, appetite, sleep, and insulin sensitivity. If weight changes occur alongside symptoms such as fatigue, sleep disruption, menstrual changes, hot flashes, or mood changes, discussing them with a healthcare professional may be worthwhile.
Should I get my hormones tested?
Hormone testing can be useful in certain situations, but which tests are appropriate depends on your age, symptoms, sex, medications, menstrual status, and medical history. A healthcare professional can determine whether testing is appropriate and interpret the results in context.
What is the difference between bioidentical hormones and hormone replacement therapy?
Hormone replacement therapy is a broad category of treatments used to supplement or replace hormones. “Bioidentical” describes hormones that have the same chemical structure as hormones naturally produced by the human body. FDA-approved hormone therapies can be bioidentical; the term does not necessarily mean compounded, natural, or safer.
Is “detoxing” necessary for hormone balance?
The body already has systems—including the liver, kidneys, gastrointestinal tract, lungs, and skin—that process and eliminate many substances. That said, these systems can benefit from enhanced nutrient support, especially when overloaded. To avoid toxic overload, it is important to reduce unnecessary exposures, support overall health through nutrition and lifestyle, and seek medical evaluation when appropriate.
