Second Opinion
Second Opinion
A Non-Toxic Product & Research Claim Checker by Interior Medicine
Dr. Meg Christensen is the physician founder of Interior Medicine, a non-toxic home resource built on her background in medicine, biochemistry, epidemiology, and clinical research.
Published May 26, 2026 | Updated June 16, 2026
Second Opinion
Navigate the non-toxic world well. Check any home product, or any alarming research claim, against Interior Medicine's methodology.
A Work In Progress
Version 4 is brand new. Leave feedback below to shape Version 5.
Didn’t work for you? Let me know below what didn’t work, and consider adding your product to the Request Tracker for me to investigate instead.
Where It Comes From
The Product Checker is the practical outcome of the What Does "Non-Toxic" Mean? course. The product checker runs on the six-step toxicology framework from the course, applied through the Material Health Guides: separating hazard from risk, and factoring in your real-life exposure, dose, and susceptibility.
The Research Checker comes from Part 3 of the course: how to read a toxicity study and tell what it actually shows.
If you want the full methodology, the methodology page is the quick reference; the course teaches it in full.
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