A message from Dr. James Dahlgren
A toxicologist’s career of research, translated into calm, evidence-graded guidance on chemical exposure — so you can feel informed and capable, not afraid.
The cocktail problem
A chemical can be “approved,” and every individual number can sit under its legal limit, while the combination is something nobody has examined. Water, food, packaging, cookware, dust, and the products in your home each add a little.
Some of it leaves the body within hours. Some stays for years. What accumulates is called your body burden, and it’s the part single-chemical safety limits don’t describe.
Read: the cocktail problemThe two flagship reports
[Cover image — The Body Burden Report]
Report 1 · Microplastics & PFAS
Microplastics and PFAS — the “forever chemicals” — turn up in food, water, and everyday products. This workbook separates what is well established from what is still emerging, so you can act without panic.
[Cover image — The Mold Workbook]
Report 2 · Mold
Damp, musty, or recently water-damaged — and you don’t feel right. This workbook walks you through what the research supports, how to look at your home, and what to ask a professional.
Three quick questions will point you to the right place to begin.
Safety limits are set for single substances. Your body meets mixtures. What that gap means, and why we grade the evidence instead of guessing.
October 2, 2026
Where PFAS come from, how to check your own water, which filters work, and why boiling isn’t one of them.
September 30, 2026
Every claim on Ask Dr. D carries a grade. Here is what each one means, and how to use them when you read the research yourself.
September 25, 2026
A short, plain-language summary of what the research shows and what to do next. No spam, unsubscribe any time.