new to the gluten free journey?
new to the gluten free journey?
Dr. Peter Osborne’s Collection
Evidence based clinical nutrition guides designed to help you better understand nutrient deficiencies, identify root causes, and make more informed decisions about your health.
Individual nutrient guides, how deficiencies develop, and how to test and supplement safely.
Learn how thiamine supports energy, nerves, muscles, and the heart. The guide also covers food sources, common causes and signs of deficiency, testing, and supplementation.
A practical overview of niacin’s role in energy production and overall health. See the main deficiency signs, food sources, testing options, supplement forms, and dosing considerations.
Iron deficiency can cause fatigue and other symptoms before anemia appears. Learn which lab tests provide a fuller picture, what can cause low iron, and how to approach food and supplements safely.
Learn how vitamin K supports normal blood clotting, bone health, and calcium regulation. The guide explains K1 and K2, food sources, deficiency risks, testing, and supplement safety.
Choline supports the brain, liver, muscles, and cell membranes, yet many people do not get enough. Learn the signs of low intake, its connection with gluten sensitivity, and ways to improve choline status.
Magnesium is essential for energy, nerve and muscle function, blood sugar, bone health, and heart rhythm. This guide covers symptoms, risk factors, useful tests, food sources, supplement forms, and safe dosing.
Low nutrient levels are not always caused by a poor diet. Learn how digestion, gluten-related damage, medications, stress, illness, and other factors can affect absorption and increase nutrient needs.
Some nutrient deficiencies can produce symptoms that resemble neurological, pain, and mood disorders. This guide explains which deficiencies to consider and why testing matters before drawing conclusions.
Blood sugar, blood pressure, thyroid function, stress hormones, and persistent fatigue.
High blood pressure can be influenced by diet, nutrient status, sleep, stress, medications, and underlying health problems. Learn what to investigate and which lifestyle strategies may help support healthier readings.
A review of supplements commonly used to support glucose control and insulin sensitivity. Learn what the evidence suggests, how each option works, and why supplements should support—not replace—diet and medical care.
Inositol plays a role in cell signaling, insulin response, and brain chemistry. Learn who may benefit, what research says about common uses, and how to choose and take a supplement.
Thyroid health depends on more than a single lab value. Learn how hormone production and conversion work, which nutrients are involved, and how diet, gluten, stress, and medications can affect thyroid function.
This guide examines persistent fatigue through the body’s stress-response system. It explains how gluten-related inflammation, poor sleep, blood sugar swings, and nutrient deficiencies may contribute to ongoing symptoms.
Autoimmune foundations, immune resilience, antioxidant support, and inflammation resolution.
Start with a clear explanation of what autoimmune disease is, how symptoms can vary, and what may trigger immune dysfunction. The guide introduces practical questions to discuss with your healthcare provider.
Explore the factors that may drive autoimmune activity, including gluten, gut health, infections, toxins, nutrient deficiencies, sleep, and stress. The guide explains how diet, testing, and lifestyle changes can support a plan for fewer flares and possible remission.
A step-by-step framework for supporting immune function through food, sleep, movement, stress management, and targeted nutrients. Use it to review the everyday factors that shape immune resilience.
Guides to nerve health, bone density, muscle function, stress support, and healthy aging.
Numbness, tingling, burning, and nerve pain can have many causes. Learn how diabetes, nutrient deficiencies, gluten-related damage, medications, toxins, and other factors are evaluated, plus the role of nutrition in recovery.
Chronic stress can affect sleep, mood, energy, and nutrient needs. This guide reviews commonly used supplements, when they may be appropriate, and why the cause of symptoms still matters.
A DEXA scan measures bone density, but density alone does not explain bone quality or fracture risk. Learn the limits of the test and the wider clinical picture behind osteoporosis and bone strength.
Creatine helps supply rapid energy to muscles and other high-demand tissues. Learn what research says about strength, cognition, aging, and recovery, plus the most studied form and common dosing approaches.
Explore inflammation, pain relief, healing, and recovery after illness, injury, or surgery.
Osteoarthritis involves inflammation, oxidative stress, and cartilage breakdown—not only wear and tear. This guide reviews five supplements studied for pain, mobility, and joint support.
Good nutrition helps the body prepare for surgery and repair tissue afterward. This guide outlines protein, key nutrients, hydration, and practical food choices to discuss with your surgical team.
N-acetyl cysteine helps the body make glutathione and supports antioxidant defense, the liver, and the lungs. Learn where NAC may help, how it is tested, and what to know about dosage and safety.
Specialized pro-resolving mediators help the body bring inflammation to a close and begin repair. Learn how they work, how the body makes them, and when an SPM supplement may be considered.
Go beyond the Ultimate Guides with comprehensive courses designed to help you apply these principles with greater depth and confidence.
A structured course on gluten sensitivity, related health problems, testing, and the Glutenology approach. Start with the free training and continue at your own pace.
