BPA is a common plastic chemical that acts like a xenoestrogen, mimicking estrogen and disrupting hormone signaling. Exposure is nearly universal and has been linked to reproductive, metabolic, and developmental effects, with fetuses and young children most at risk. You can lower your exposure by swapping plastic for glass or stainless steel, avoiding canned foods, and never microwaving plastic.
Hormone disruptors are chemicals that imitate the body's own hormones, and that mimicry can lead to real health effects. Bisphenol A, more commonly called BPA, acts like a xenoestrogen (the prefix "xeno" means foreign), which means it imitates estrogen. Because it is not chemically identical to your natural estrogen, its presence in the body has been tied to a range of adverse effects. Keep reading to learn where BPA hides, why it matters, and the practical steps you can take to lower your exposure.
What Is BPA and Why Is It Called a Hormone Disruptor?
BPA is a man-made chemical used to make hard polycarbonate plastics and epoxy resins, and it is classified as an endocrine-disrupting chemical that interferes with the body's hormone signals. It earns that label because it can act as a xenoestrogen and bind to estrogen receptors, nudging cells to respond as if a real hormone were present. That false signal is the root of the concern, because hormones control growth, metabolism, and reproduction.
The Origin and Uses of BPA
BPA is an epoxy resin that is present in plastic containers and most canned food liners. It has been used since the 1940s as a barrier between the food and the can surface in order to prevent corrosion of the can and migration of metal into the food. According to the U.S. Food and Drug Administration, which continues to monitor BPA in food packaging, the chemical also shows up in water bottles, baby bottles, dental fillings and sealants, dental devices, medical devices, eyeglass lenses, DVDs and CDs, household electronic items, and sports equipment. Because so many of these items touch food and drink, everyday contact adds up.
How Does BPA Get Into Your Body?
The danger arises when BPA leaches from the plastic or canned lining into the food or water, where it can then be consumed unknowingly. This is especially true when these items are washed, heated, or stressed in any way. Heat is a major trigger, which is why warming food in plastic is a common exposure route. In 2007, a consensus statement by 38 experts on Bisphenol A summarized that the average levels of BPA in humans are higher than what is found to cause harm to many animals in laboratory experiments.
A 2011 study investigated the number of chemicals pregnant women are exposed to in the U.S. and found BPA in 96% of women. According to the researchers, prenatal exposure to BPA has been linked to adverse health outcomes, affecting brain development and increasing susceptibility to cancer later in life. Safety levels set by regulatory bodies remain under review as new scientific studies emerge.
Exposure appears to be nearly universal. A long-running federal biomonitoring program has detected BPA in the urine of the large majority of people tested, which points to widespread BPA exposure across the general population. Because the contact is so constant, knowing your personal toxic load can be useful. Targeted lab screening that measures everyday environmental toxin exposure can show whether chemicals like BPA are part of your picture, and the broader range of advanced diagnostic testing in our medical clinic can help connect those results to symptoms.
The Dangers of BPA
Although BPA is currently approved by the FDA for use in food containers and packaging, the agency has also announced concerns about potential effects of BPA on fetuses, infants, and young children. Additionally, a report from the National Institute of Environmental Health Sciences described BPA as a reproductive, developmental, and systemic toxin because of how it affects the female reproductive system in both infants and adults.
According to FDA materials, the National Institutes of Health, and other studies, there is evidence that BPA exposure is also linked to:
The generation of fat tissue
An increased risk of non-ovarian pelvic endometriosis
Ovarian dysfunction
Polycystic ovarian syndrome
Fertility issues
Impaired uterine endometrial cellular proliferation
Male impotence
Heart disease
Breast cancer
Studies have also shown that in mice the uterus genome is permanently altered after exposure to BPA during fetal development. These alterations were found to primarily affect genes that are regulated by estrogen and that play a key role in the formation of the estrogen-related diseases mentioned above.
Does BPA Affect Hormones in Women and Men?
Yes. BPA can activate estrogen receptors and behaves like a weak synthetic estrogen, which is why it is grouped with other estrogen-mimicking chemicals. Research summarized by the National Institutes of Health shows that BPA binds estrogen receptors and can disrupt normal hormone signaling. In women, this estrogen-like activity is the reason BPA is tied to reproductive and ovarian effects. In men, laboratory studies suggest BPA may interfere with testosterone production. When natural hormone messaging gets crowded out by a foreign signal, the result can look and feel like a hormone imbalance that throws mood, energy, and reproductive health off track.
Are Hormone Disruptors Like BPA Actually Dangerous?
The scientific concern is well established. Major medical and environmental health bodies, including the Endocrine Society, recognize that endocrine-disrupting chemicals can interfere with hormone systems even at low doses, and that these chemicals are linked to reproductive, metabolic, and developmental effects. The exact risk for any one person depends on dose, timing, and life stage, with developing fetuses, infants, and young children considered the most vulnerable. That uncertainty is exactly why a cautious, reduce-your-exposure approach makes sense.
Circumventing the Dangers of BPA
While authorities continue to review whether BPA is safe for food packaging, reducing your exposure is a sensible step you can take today. Practical ways to lower your BPA exposure include:
Avoid canned foods whenever possible.
Use glass, ceramic, and stainless steel food storage containers and water bottles.
Use glass and ceramic in the microwave.
Never microwave plastic, since even "microwave-safe" plastic can leach chemicals into food when heated.
Check the recycle codes on the bottom of plastic containers. Some, but not all, plastics marked with recycle codes 3 or 7 may be made with BPA.
When possible, opt for glass, porcelain, or stainless steel containers, particularly for hot food or liquids.
Use baby bottles that are BPA free.
While the debate continues over whether BPA should be banned, it is wise to limit contact with this chemical wherever you reasonably can by following these simple steps.
Frequently Asked Questions
Does BPA affect hormones?
Yes. BPA acts as a xenoestrogen, meaning it mimics estrogen and can bind to the same receptors your natural hormones use. This false signal can interfere with normal hormone function, which is why BPA is classified as an endocrine-disrupting chemical and is studied for its effects on reproduction and development.
What does BPA do to females?
Because BPA behaves like estrogen, research has linked it to ovarian dysfunction, polycystic ovarian syndrome, fertility concerns, and other reproductive effects. Animal studies also show changes to estrogen-regulated genes after early-life exposure, which is one reason experts urge extra caution during pregnancy and early childhood.
Does BPA block testosterone?
Laboratory research suggests BPA may interfere with testosterone synthesis and male reproductive function. While more human studies are needed to fully define the risk, the existing evidence is enough that reducing exposure is widely recommended for men and women alike.
How can I reduce my exposure to BPA?
Swap plastic for glass, ceramic, or stainless steel, especially for hot food and drinks. Avoid canned foods, never microwave plastic, choose BPA-free baby bottles, and be cautious with plastics marked recycle code 3 or 7, which may contain BPA.
Can I find out how much BPA is in my body?
Yes. Specialized lab testing can measure environmental chemical exposure, including markers tied to your overall toxic burden. Working with a clinic that offers this kind of screening can help you understand your personal exposure and connect any findings to symptoms you may be experiencing.
Ready to take the next step?
Talk with the AgeRejuvenation team about a Environmental Toxin Screening plan built around your labs and goals.
