
Section 07 of 09 • 13 insights
Toxin Sensitivities
Most people walk past a scented candle and smell nothing. You get an instant headache.
Some immune systems shrug off mold. Others mount a full response to trace amounts. Yours does one of those.
From the report
The biology this section covers.
Every day, you're exposed to environmental toxins, such as mold, air pollution, pesticides, plastics, and synthetic chemicals in food packaging and personal care products. These substances can interfere with your hormones and contribute to a wide range of health problems over time.
The key question isn't whether you're exposed; everyone is. The question is how well your body handles it. Regular low-level exposure to multiple toxins can gradually overwhelm your body's clearing systems, leading to buildup, increased sensitivity, and a cascade of effects, including fatigue, hormonal disruption, brain fog, and chronic inflammation.
This reading measures two sides of the equation: how effectively your detoxification and antioxidant enzymes clear environmental compounds, and how strongly your inflammatory pathways react to what gets through.

The story this section tells
What your DNA is doing under the hood. Why it matters today.
Some immune systems shrug off mold. Others mount a full inflammatory response to trace amounts. Same story with histamine, heavy metals, and chemicals—your genes decide if exposure is a non-event or a spiral.
When you identify which exposures your body reacts poorly to, you stop responding to mysterious symptoms and begin making specific changes that prevent them.
This one is for you if…
You're the person who "reacts to everything," but tests show nothing.
What you'll see in your Toxin Sensitivities report.
Every insight below appears as a personalized dark card in your full Mosaic report, with a color marker tuned to your specific genetic variants and a practical next step you can act on.
Heavy Metal Processing
4 insights
toxin sensitivities
Heavy Metal Health Impact
Detox speed for mercury, lead, cadmium, and arsenic varies dramatically between people. Slow detoxers accumulate more from the same everyday exposure everyone gets—and benefit most from targeted chelation, prevention strategies, and cleaner sourcing.
Read insight →toxin sensitivities
Inorganic Metal Processing Capacity
Lead from old pipes, cadmium from soil, and aluminum from cookware—your clearance rate for these common exposures varies. Slow processors benefit from better water filtration, periodic testing, and cookware upgrades. Fast processors have more natural resilience.
Read insight →toxin sensitivities
Organic Metal Processing Capacity
Methylmercury clearance (mostly from fish) varies widely. Slow processors can only safely eat high-mercury fish occasionally; fast processors have more flexibility. This determines whether "eat more fish for omega-3s" is good advice or a net negative for you specifically.
Read insight →toxin sensitivities
Overall Heavy Metal Processing Speed
Your combined genetic score for all heavy-metal pathways. A low score means prioritizing a low-toxin lifestyle pays real dividends; a high score means natural resilience that doesn't require as much vigilance.
Read insight →
Histamine
6 insights
toxin sensitivities
Histamine Metabolism
DAO and HNMT enzymes break down histamine from wine, cheese, fermented foods, and leftovers. If yours run slow, you know exactly what happens—flushing, headaches, racing heart, or IBS symptoms within an hour of sushi. This confirms it's not "all in your head."
Read insight →toxin sensitivities
Histamine Production
Some immune systems overproduce histamine even without obvious allergens. This explains year-round congestion, itching, or hives that antihistamines only partly control—because you're constantly producing more than you can clear.
Read insight →toxin sensitivities
Histamine Receptor Function
Same histamine level, wildly different reaction. High receptor sensitivity turns normal amounts into hives, racing heart, or anxiety—even when production and breakdown are fine. The issue isn't how much histamine you have. It's how loudly your body hears it.
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Histamine Transport Efficiency
Even with good breakdown enzymes, poor cellular export traps histamine inside cells, where it keeps causing problems. This variant explains widespread symptoms from tiny triggers that "shouldn't" bother anyone—and why even low-histamine diets don't fully work.
Read insight →toxin sensitivities
Sensitivity to Food-based Histamine
Your ability to tolerate aged cheeses, wine, cured meats, and fermented foods without symptoms. Low tolerance is surprisingly common—and completely manageable once you stop blaming random foods and start seeing the pattern.
Read insight →toxin sensitivities
Sensitivity to Histamine
Your global histamine tolerance—combining production, breakdown, receptor sensitivity, and transport into one clear picture. This is the master view that explains the whole pattern instead of just individual puzzle pieces.
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Enviro Toxin and Pollution Sensitivity
1 insight
For practitioners
Using Toxin Sensitivities in clinical practice.
Pinpoint genetic drivers of mold, histamine, chemical, and heavy-metal reactivity — strengthening your ability to justify and implement your chosen protocols.
About provider accounts →What to read next.
The 9 areas of your biology are interconnected: your appetite genes talk to your sleep genes, your detox pathways shape your hormone clearance. Each one informs the others.
See your toxin sensitivities insights.
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