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Pre-Diabetes: Insulin Resistance, Is It a Real Condition — Or a Warning Sign We Ignore at Our Own Risk?
Many people are told they have pre-diabetes and assume it simply means they may someday develop diabetes.
The truth is far more concerning.
Long before someone officially develops Type 2 diabetes, elevated insulin levels and subtle abnormalities in blood sugar regulation may already be damaging blood vessels, nerves, kidneys, and even the brain.
Prediabetes is not almost disease.
It is often the earliest measurable sign that metabolic dysfunction has already begun.
The g

David Stephen Klein, MD FACA FACPM
Jul 36 min read


C15:0 Essential Fatty Acid: The Newly Discovered Longevity Nutrient?
For decades, nutrition science focused primarily on omega-3 and omega-6 fatty acids. New research now suggests that C15:0 (pentadecanoic acid), a naturally occurring odd-chain saturated fatty acid, may represent an overlooked essential nutrient. Early evidence indicates C15:0 may support mitochondrial function, reduce inflammation, stabilize cell membranes, improve insulin sensitivity, and potentially influence longevity pathways involved in healthy aging.

David Stephen Klein, MD FACA FACPM
Jun 185 min read


Uric Acid and Longevity: Live Longer by Keeping the Level below 5.5 mg/dl
Most people associate uric acid with gout, but emerging research suggests it may be far more important. Elevated uric acid has been linked to hypertension, cardiovascular disease, kidney disease, insulin resistance, endothelial dysfunction, and accelerated aging. While many laboratories consider levels up to 7.0 mg/dL “normal,” evidence suggests that levels below 5.5 mg/dL—and ideally near 5.0 mg/dL—may provide greater protection against vascular injury and chronic disease. U

David Stephen Klein, MD FACA FACPM
Jun 166 min read


Vitamin E and Benefits to Human Health: More Than a Single Vitamin
Vitamin E is far more complex than many people realize. Rather than a single nutrient, vitamin E consists of multiple related compounds including tocopherols and tocotrienols, each with unique biological effects. This article reviews the different forms of vitamin E, their roles in cardiovascular, neurological, immune, and cellular health, and why high-quality supplements should contain a broad spectrum of vitamin E compounds rather than isolated alpha-tocopherol alone.

David Stephen Klein, MD FACA FACPM
May 254 min read


Bergamot Extract and Cholesterol Lowering: Natural Support for Heart Health
Bergamot is a citrus fruit increasingly studied for its potential to support healthy cholesterol levels and cardiovascular health. Rich in flavonoids and antioxidant compounds, bergamot may help reduce LDL cholesterol, triglycerides, inflammation, and oxidative stress while supporting HDL cholesterol. This article reviews the science behind bergamot, possible benefits, dosing considerations, and safety information for individuals seeking natural support for metabolic and hear

David Stephen Klein, MD FACA FACPM
May 195 min read


Insulin Resistance: The Hidden Precursor to Cardiovascular Disease, Dementia, and Accelerated Aging
Insulin resistance develops silently years before diabetes, accelerating heart disease, cognitive decline, and aging. Early detection with proper lab testing allows effective, targeted intervention to reverse risk and restore metabolic health.

David Stephen Klein, MD FACA FACPM
May 123 min read


Uric Acid and Nitric Oxide: The Hidden Driver of Endothelial Dysfunction and Vascular Disease
Uric acid does more than cause gout—it reduces nitric oxide, impairing blood vessel function and increasing risk for hypertension, heart disease, and kidney dysfunction. Understanding this connection allows earlier intervention and better long-term outcomes.

David Stephen Klein, MD FACA FACPM
Apr 115 min read


Vitamin K: The Overlooked Regulator of Bone, Vascular, and Coagulation Health
Vitamin K plays a critical role beyond clotting—it directs calcium into bone and away from arteries. This article explains the differences between K1, K2, and K3, highlights safe dosing, and outlines key medication interactions, especially with warfarin. Understanding vitamin K helps optimize bone strength, cardiovascular health, and safe anticoagulation management.

David Stephen Klein, MD FACA FACPM
Apr 45 min read


Optimal Blood Pressure for Your Greatest Longevity.
What is the ideal blood pressure for living longer and staying healthier as we age? While there is no single perfect number for everyone, decades of research make one point clear: maintaining blood pressure in a normal or near-normal range dramatically reduces the risk of heart attack, stroke, kidney disease, and premature death.
For most adults, the range associated with the greatest longevity is a systolic blood pressure of approximately 120–130 mm Hg and a diastolic press

David S. Klein, MD FACA FACPM
Mar 315 min read


Alpha Lipoic Acid and Healthy Aging
Alpha lipoic acid supports mitochondrial energy production, improves insulin sensitivity, and protects vascular and nerve health. This physician-to-patient guide explains how ALA may support disease prevention and healthy aging when used within a comprehensive longevity strategy.

David Stephen Klein, MD FACA FACPM
Mar 274 min read
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