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Alpha-Lipoic Acid: A Powerful Tool for Metabolic Health, Weight Loss, Insulin Resistance and Brain Protection
Alpha-lipoic acid (ALA) is a powerful antioxidant that plays an important role in metabolism, weight management, and brain health. Research shows it may improve insulin sensitivity, support healthy blood sugar regulation, promote fat metabolism, and help protect against cognitive decline by reducing oxidative stress and improving mitochondrial function. For patients focused on longevity and prevention, ALA may represent one of the most versatile evidence-based nutritional int

David Stephen Klein, MD FACA FACPM
7 days ago5 min read


Low-Grade Fever: When a Slight Temperature Elevation May Mean More Than You Think
A low-grade fever is often dismissed as insignificant, yet persistent mild elevations in body temperature may reveal important underlying physiologic stress. Infection, chronic inflammation, immune activation, endocrine dysfunction, and even hidden systemic disease can all influence temperature regulation. Understanding the body’s normal circadian temperature rhythm is equally important, since a temperature considered abnormal at one time of day may be entirely normal at anot

David Stephen Klein, MD FACA FACPM
Jul 114 min read


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


L-Glycine: An Overlooked Amino Acid for Sleep, Anxiety, Recovery, and Longevity
L-glycine is a simple amino acid with surprisingly powerful health benefits. Research suggests it may improve sleep quality, reduce anxiety, support collagen formation, enhance liver detoxification, improve metabolic health, and promote healthy aging pathways linked to longevity. Unlike conventional sedatives, glycine works naturally by supporting the body’s own restorative processes, making it one of the most overlooked compounds in nutritional and longevity medicine.

David Stephen Klein, MD FACA FACPM
Jun 275 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


Vitamin D in Midlife May Reduce Future Tau Protein Burden: Implications for Dementia Prevention
A major new study published in Neurology demonstrated that individuals with higher circulating vitamin D levels during midlife showed significantly lower tau protein accumulation in the brain nearly two decades later. Tau protein accumulation is one of the central pathological hallmarks of Alzheimer’s disease and other neurodegenerative disorders. These findings suggest vitamin D optimization during midlife may represent an overlooked but potentially powerful intervention for

David Stephen Klein, MD FACA FACPM
Jun 156 min read


Increasing Metabolism Naturally
Metabolism is influenced by more than genetics. Strategic food choices, adequate protein intake, muscle preservation, sleep quality, and targeted supplements such as berberine, magnesium, alpha-lipoic acid, vitamin D, and L-carnitine can support healthy energy production and weight management. Learn evidence-based strategies to naturally optimize metabolic health.

David Stephen Klein, MD FACA FACPM
Jun 35 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


Metabolic Syndrome: The Clinical Turning Point You Can Still Reverse
Metabolic syndrome marks the point where insulin resistance becomes measurable disease. At this stage, the process remains highly reversible. Early detection and targeted intervention can prevent progression to heart disease, diabetes, and cognitive decline.

David Stephen Klein, MD FACA FACPM
May 143 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
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