Q&A with Leyla, Part 2: Wool Carpeting v. Hardwood Flooring

Registered dietitian nutritionist Leyla Muedin discusses the growing interest in biological age versus chronological age and explains that biological aging is modifiable through consistent lifestyle choices. She outlines common measurement tools and biomarkers, including epigenetic clocks (DNA methylation), telomere length, VO2 max, inflammatory markers, grip strength, and muscle mass, noting that genetics account for only about 25–40% of biological aging variation. Key interventions include regular aerobic and resistance exercise, protein-adequate nutrition to preserve muscle and prevent sarcopenia (with whey protein and leucine-rich foods noted), improved sleep, stress management, reducing processed foods and visceral fat, and lowering chronic inflammation (CRP, IL-6). She also reviews hormetic stressors such as sauna use and mentions red/near-infrared light and sun exposure without sunglasses. Leyla shares client examples showing biological age can worsen or improve, and encourages repeat testing after lifestyle changes.

An overview of itchingWould tofu be a good addition to my diet?Is TMAO a risk factor for heart disease when eating meat?How about interviewing an expert on vegetarianism?

Would you discuss vertebroplasty vs. kyphoplasty?I recently had a fundoplication surgery and now have gastroparesisCould you recommend a healthy aging supplement?How to treat Meibomian Gland Dysfunction/dry eye disease?Should we get wool carpeting or hardwood flooring?

Investigative journalist Charles Piller reveals deep-seated corruption in Alzheimer's research as chronicled in his book, “Doctored: Fraud, Arrogance, and Tragedy in the Quest to Cure Alzheimer's Disease.” The discussion delves into the issues surrounding Big Pharma's influence, fraudulent scientific studies, and the implications of a controversial 2006 experiment at the University of Minnesota. They also address the costly and marginally effective Alzheimer's drugs like Aducanumab, the challenges faced by alternative research hypotheses, and the significance of improving scientific integrity and checks and balances in medical research.

Dr. Hoffman continues his conversation with investigative journalist Charles Piller, author of “Doctored: Fraud, Arrogance, and Tragedy in the Quest to Cure Alzheimer's Disease.”

Dr. Corey Schuler, PhD(c), FNP, DC, CNS, and director of medical affairs at Allergy Research Group, details his paper “Energy Allocation Resilience and Endocrine Integration” in the International Journal of Molecular Sciences. He introduces the Energy Allocation System (EAS), which emphasizes how the body allocates energy—not just produces it—and links many symptoms to impaired bioenergetics and resilience. They discuss mitochondria as energy generators and cellular signaling hubs, the integrated stress response and endocrine coordination (HPA axis, thyroid, gonads), and mitohormesis/eustress (exercise, fasting, heat/cold, circadian “zeitgebers”). Schuler explains nuanced testing for fatigue (diurnal cortisol, CGM patterns, thyroid markers including T3/reverse T3) and a case of a perimenopausal woman where oral contraceptives and cortisol dysregulation affected glucose patterns. They cover mitochondrial support (removing obstacles like pollutants/antibiotics, triglycerides, carnitine, dietary fats, micronutrients) and pacing/sequencing lifestyle interventions.

Dr. Hoffman continues his conversation with Dr. Corey Schuler, PhD(c), FNP, DC, CNS, and director of medical affairs at Allergy Research Group.

Dr. Marty Makary out as FDA Commissioner—was he the victim of a BigPharma purge? Are “liquid biopsies” useful for predicting recurrences, as well as guiding therapy, for cancer? Nighttime smartphone by adolescents surges, eroding kids’ sleep needs; Persistent itch may require an “all of the above” approach to break its vicious cycle—could topical vitamin B12 provide an answer? Study critiques research methods that fast-tracked new Alzheimer’s drugs.

You won’t believe this new medical use for Classic Coca-Cola; The solution for menopausal sleep problems goes beyond mere hormone replacement; Paxlovid strikes out vs. Covid in new trials; Pesticide exposure may explain rising colorectal cancer rates in young people; Big Food touts faulty study that claims healthier food regulations will cost consumers; Higher aerobic fitness boosts size of the brain’s memory centers—as does memorizing London taxi routes. 

Eccentric Exercise: Better Results with Less Effort. Leyla Muedin, a registered dietitian nutritionist, discusses eccentric exercise and research suggesting it may deliver better results than strenuous workouts that cause muscle damage and delayed onset muscle soreness (DOMS). She explains contraction types—isometric, concentric, and eccentric—highlighting that eccentric contractions involve muscle lengthening during the lowering phase (e.g., lowering a dumbbell, walking downstairs) and can provide greater mechanical loading with lower perceived effort, less fatigue, and broad accessibility across ages and health conditions, though requiring more focus and control. She cites studies including stair-descending in elderly obese women improving cardiovascular function, insulin sensitivity, cholesterol, and strength, and a five-minute home routine (chair squats, wall pushups, chair reclines, heel drops) improving strength, flexibility, mental health, and encouraging continued exercise. She notes athletic benefits and the need for further research.