In a recent appearance on Triggernometry, Dr. Rhonda Patrick presented research that connects everyday food packaging to rising autism rates, with a particular focus on chemicals found in takeout containers and disposable cups.
During the conversation, the biochemist pointed to compelling data from studies tracking pregnant women. “There have been studies with pregnant women that have the highest levels of BPA in their urine. They’re six times more likely to have a child diagnosed with autism by the age of 11 than women with the lowest levels of BPA,” Patrick stated.
She continued: “I’m citing this one study because the statistic is very striking. Six times more likely. That’s a very notable number. But I just want to sort of emphasize that there’s not just one study showing this correlation. This is just the big statistic number correlation. There’s multiple studies showing this correlation between higher levels of BPA and increased autism risk.”
The mechanism behind this connection centers on hormone disruption during critical periods of brain development. BPA, or bisphenol A, interferes with the aromatase enzyme, which plays an essential role in producing estrogen surges during fetal development.
These surges, perhaps counterintuitively, help masculinize the male brain. When this process gets disrupted, brain connectivity and structure can be affected in ways that may lead to autism spectrum disorder.
Animal research has demonstrated similar effects in mice, and genetic studies reveal that boys with dysfunctional aromatase enzymes face significantly elevated autism risk when exposed to these compounds.
Children diagnosed with autism have been found to carry BPA levels 15 times higher than their non-autistic peers, suggesting their bodies may have difficulty eliminating these chemicals.
Takeout food presents particularly high exposure risks due to multiple contamination points. “Like you order takeout, you know, those like if you go to a bakery, and it’s like the tissue paper that’s all lined with forever chemicals,” Patrick explained.
Black plastic containers commonly used for restaurant delivery contain brominated flame retardants at levels 30 to 40 times above safety standards. When hot food sits in these containers, heat accelerates the transfer of chemicals into the meal dramatically.
Patrick emphasized that heating BPA increases its migration into food by 55-fold, compressing what would normally represent years of gradual exposure into a matter of minutes. This thermal effect transforms seemingly safe packaging into a concentrated chemical delivery system.
Disposable beverage cups represent another hidden source of exposure that many consumers overlook. “I want to get to the coffee cups because that’s one you don’t think about because it doesn’t look like plastic. It’s very tricky because they’re lined with plastic. I really want these companies like Starbucks and everyone to like start lining their cups with polylactic acid,” Patrick said.
She stated: “But you can get sugar cane and line them. But like, until then, bring your own mug or you know, I don’t know, stop consuming to-go beverages because you’re talking 55 fold more BPA into your beverage than if you were consuming just water from like a plastic bottle.”
The paper cups themselves require plastic linings to prevent leakage, and when filled with hot liquids, they release substantial amounts of these compounds. Forever chemicals, technically known as PFAS, are added to food packaging to provide grease resistance.
These remain in the human body for four to five years and have now contaminated even organic, grass-fed dairy products after entering soil and water supplies that feed livestock.
Patrick also addressed the thermal paper receipts handed out with takeout orders. “Receipts are, you know, the printing that’s on the receipt that is done with thermal paper and essentially the printing on it is coated with BPA, coated with it, bisphenol, that stuff that we’re talking about now. The worst insult is ingesting it. But unfortunately, if you have any kind of cream on your fingers or like sanitizer, that causes the BPA from the receipts to go into your circulation 100 fold.”
The research suggests that while genetics contribute to autism risk, environmental factors interact with genetic vulnerabilities in significant ways. Clinical trials using sulforaphane, a compound derived from broccoli sprouts that helps the body eliminate BPA, have demonstrated improvements in autism symptoms across multiple studies.
When the conversation turned to why this evidence receives less attention than other potential autism risk factors, Patrick acknowledged the challenge. While some researchers have explored connections between acetaminophen use during pregnancy and autism or ADHD, particularly with chronic use, the evidence for plastic chemicals appears more robust across epidemiological, animal, and genetic research.
Patrick outlined practical steps for reducing exposure to these compounds. Installing a reverse osmosis water filter removes 99% of microplastics and endocrine disruptors from drinking water. Avoiding all heated plastic, including takeout containers and disposable beverage cups, eliminates the most significant sources of exposure.
Switching from plastic water bottles to glass or stainless steel containers reduces daily chemical intake. Using air filters equipped with HEPA technology removes microplastics from indoor air, which studies indicate accumulate in the brain at 10 to 20 times higher concentrations than in other organs.
