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Why Interior Medicine is Different
Most non-toxic product round-ups skip the medical background, keep financial relationships vague, and compare products without a consistent method. That last part matters more than it sounds. “Non-toxic” has no definition, so a consistent, health-focused method is the only fair way to compare products. Interior Medicine is built on three things: a licensed physician doing the evaluation, full independence from brands, and a published methodology applied the same way to every product.
By Dr. Meg Christensen | Physician-founder of Interior Medicine, a non-toxic home resource built on her background in medicine, biochemistry, epidemiology, and clinical research.
Published Sept 8, 2026 | Updated October 12, 2026
Physician Credentials
My background is in science and research: I have a Bachelor’s degree in Biochemistry and Biophysics, completed graduate coursework in Epidemiology and Biostatistics, and spent nine years in cancer and neurological disease research. I’m an affiliate member of the American College of Medical Toxicology and the National Association of Environmental Medicine. I hold a Healthier Materials and Sustainable Building certificate and have been WELL AP credentialed. I’m also a naturopathic physician (ND), licensed as a physician in Oregon. I know many people are skeptical of that title, and that skepticism is reasonable. I also see my ND training as a strength. It gave me an inside view of the holistic health world: how people in it think, what they value, and why many of them distrust conventional medicine. That perspective lets me bridge conventional and wellness approaches with empathy and deep understanding instead of polarizing. I can take a concern seriously and still hold it to the evidence. See my full background here.
Documented Methodology
Every product is rated against fixed, published scales, not brand marketing, my opinion, or outdated facts echoing around the wellness world. Materials are checked against third-party certifications and documented test results and evidence. Some products are also rated on how well they perform the specific health job they exist to do. Strip away the marketing fluff and confusion, and you can compare how healthy products actually are, side by side. See the full Methodology, along with the Material Health Scales and Health Function Scale behind it, for the exact criteria behind every rating.
Full Affiliate Transparency
Every affiliate relationship on this site is individually labeled. Most sites bury a single disclosure at the top or bottom of a page, so you can’t tell which brands they earn commission from. That leaves room for earnings to come before honesty. Labeling each one keeps my own bias in check. Brands cannot pay for placement, higher ratings, or favorable coverage. The rating comes first, and the partnership comes after, if it comes at all. Read the full Affiliate Disclosure and Editorial Guidelines for exactly how this works.
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