What if changes in breast tissue could be picked up years before anything shows up on a standard image? In this episode, Amber Warren, PA-C sits down with Dr. Mark Holthouse, Chief Medical Officer at Functional Medicine of Idaho, and Dr. Philip Hoekstra, PhD, one of the pioneers of medical thermology, for a conversation about what personalized breast screening can look like. This conversation first aired as episode 69, and with October being Breast Cancer Awareness Month, we’re bringing it back for anyone who missed it.
Dr. Hoekstra holds a PhD in neuroscience from McGill University and completed advanced fellowships at Georgetown University, Temple University, and the University of Southern California. He is a past president and lifetime fellow of the American Academy of Thermology and served for years as director of Thermoscan Laboratories. His work centers on thermology, which applies scientific methods, pathophysiology, and objective quantitative standards to thermal imaging.
Together, Amber, Dr. Holthouse, and Dr. Hoekstra walk through what each screening tool actually measures and where each one shines. Mammography evaluates anatomical structures and microcalcifications, and Dr. Hoekstra explains how modern digital machines use far less radiation than the older film and screen units, with a single mammogram roughly equal to eight weeks of natural background radiation outdoors. He also covers where mammography becomes less reliable, including dense breast tissue, very small or very large breasts, implants, prior biopsies, and hormone replacement therapy.
Thermology looks at something different: metabolic heat signatures, unregulated blood flow, and the inflammatory activity associated with early cancer development. Because it reads cellular and metabolic activity rather than structure, it can flag changes years before they become visible on standard imaging. It is passive, noninvasive, and involves zero radiation. Dr. Hoekstra shares outcome data showing thermology reaching up to 96% sensitivity and 84% specificity in standalone evaluations.
The conversation also covers where whole breast ultrasound fits best, as a secondary tool alongside mammography for dense breasts or for evaluating a palpable lump, and why it produces too many false positives to stand alone. The takeaway is a multimodality approach: thermography, ultrasound, and mammography working together to give women the clearest and earliest picture possible.
Amber and her guests also look at the bigger picture. Breast cancer rates have climbed from roughly 1 in 50 women 150 years ago to between 1 in 7 and 1 in 8 women today, and more younger women are being diagnosed. They discuss the role of environmental toxins, plastics, pesticides, and lifestyle changes in that shift.
The episode closes with thyroid thermology, which measures how the gland is functioning rather than simply how it looks. It can help identify early thyroid dysfunction, autoimmune activity like Hashimoto’s and Graves’ disease, and lymphatic inflammation, all without contrast dye or radioactive tracers.
In this episode, you will learn:
- Why combining thermography, whole breast ultrasound, and mammography offers the most complete approach to early detection
- How modern digital mammography compares to older machines in radiation exposure
- Why dense breasts, implants, prior biopsies, and hormone therapy can make mammograms less accurate
- What sensitivity and specificity mean, and how mammography and thermology compare
- What thermology is and how it differs from basic thermal imaging
- How thermal imaging detects metabolic heat, blood flow changes, and inflammation
- Why thermology can identify changes years before structural changes appear
- Where whole breast ultrasound is most useful, and why it struggles as a standalone screening tool
- Why breast cancer rates have risen from 1 in 50 women to 1 in 7 or 8
- How environmental toxins, plastics, pesticides, and lifestyle affect breast cancer risk in younger women
- How thyroid thermology measures gland function and catches early autoimmune activity
- What a personalized screening plan can look like for you