Ochratoxin A
Toxins · Mycotoxin
Moderate exposure concern
Bottom line
Read Off Label rates Ochratoxin A a MODERATE exposure concern (4.1/10) based on moderate evidence of low-med harm magnitude and low-moderate ubiquitous exposure prevalence.
The 'mold in coffee' narrative pushed by some biohacker brands (Bulletproof) is overstated — major roasters test for this.
This entry describes an exposure rather than an added intervention.
What the evidence says
The 'mold in coffee' narrative pushed by some biohacker brands (Bulletproof) is overstated — major roasters test for this. Some heterogeneity in cheap bulk coffee. Balkan endemic nephropathy was the clearest human signal. Mycotoxin binders (bentonite, activated charcoal) have some rationale for high-exposure populations.
Mechanism
Toxin from Aspergillus ochraceus and Penicillium species; contaminates coffee, wine, cereals, dried fruit; kidney-toxic; suspected carcinogen (IARC Group 2B)
Reported exposure / mitigation context
Contamination varies by producer and storage; whole grains generally store with less fungal surface exposure than ground products while price alone is not a validated exposure proxy
Citations
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Common questions
- How harmful is Ochratoxin A?
- Ochratoxin A is rated MODERATE exposure concern (4.1/10) on the Read Off Label scale, derived from moderate evidence of low-med harm magnitude and low-moderate ubiquitous exposure prevalence.
- How does Ochratoxin A cause harm?
- Toxin from Aspergillus ochraceus and Penicillium species; contaminates coffee, wine, cereals, dried fruit; kidney-toxic; suspected carcinogen (IARC Group 2B)
- What exposure context is reported for Ochratoxin A?
- The 'mold in coffee' narrative pushed by some biohacker brands (Bulletproof) is overstated — major roasters test for this.
This is an independent synthesis of published research by a non-clinician. Scores are opinions supported by citations, not prescriptions. See the full disclaimer and methodology for how this score was produced and what it does and doesn't mean.