Zenith Within by Sara Redondo, MD, MS

Zenith Within by Sara Redondo, MD, MS

The Trojan Horse in Your Closet: The New Backdoor for Toxins

Microplastics in clothing may carry toxins into your body—especially when you sweat. Discover how to minimize your risk.

Sara Redondo, MD, MS's avatar
Sara Redondo, MD, MS
Apr 29, 2026
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We are accustomed to worrying about what we put into our bodies. We filter our water to remove contaminants, we obsess over organic labels to avoid pesticides, and we’ve traded plastic tupperware for glass to avoid BPA.

We view our skin as the ultimate fortress—a waterproof, impenetrable barrier designed to keep the world out. For decades, the consensus in environmental health was that while we might “touch” pollutants, they were largely too large or too stable to actually breach the skin’s surface and enter our bloodstream.

However, new research has just shattered that assumption.

It turns out there is a “Trojan Horse” mechanism currently at play in our homes, our offices, and especially our gyms. A recent breakthrough study has identified a specific environmental “carrier” that is effectively smuggling toxic industrial chemicals past our skin’s defenses.

Even more concerning? This “backdoor” entry becomes significantly more efficient under a condition most of us experience every single day. If you wear synthetic fabrics or sit on modern upholstered furniture, you need to understand how your own biology might be inviting these toxins in.

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