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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


Kombucha and Health: Can a Daily Fermented Tea Improve Gut, Metabolic, and Immune Function?
Kombucha is a fermented tea that may support gut health, digestion, and metabolism. While not a cure-all, it can be a healthy daily drink when used in moderation. Choosing low-sugar options and drinking it consistently may help replace sugary beverages and support better overall health.

David Stephen Klein, MD FACA FACPM
Mar 245 min read


Iodine, Selenium, and Thyroid Function: Why Balance Matters
https://mayoclinic.elsevierpure.com/en/publications/selenium-and-graves-disease/

David Stephen Klein, MD FACA FACPM
Mar 215 min read


DiAcCA (Di-Acetylated Carnosic Acid): A Precision Neuroprotective Strategy Targeting Oxidative Stress
Di-acetylated carnosic acid (DiAcCA) is a rosemary-derived investigational compound designed to activate the Nrf2 antioxidant pathway selectively in oxidatively stressed brain tissue. Rather than acting as a simple antioxidant, it amplifies intrinsic cellular defense systems. Preclinical data suggest potential applications in Alzheimer’s disease, Parkinson’s disease, and traumatic brain injury, though human trials remain limited.

David Stephen Klein, MD FACA FACPM
Mar 133 min read


Visceral Adiposity: Why Belly Fat Is A Metabolic And Longevity Risk
Visceral fat is not merely stored energy—it is a biologically active tissue that drives insulin resistance, cardiovascular disease, cognitive decline, and accelerated aging. Many individuals with normal weight harbor excess visceral fat. Identifying and reducing it early can dramatically improve metabolic health and long-term healthspan.

David S. Klein, MD FACA FACPM
Mar 103 min read


Hyperuricemia and Eye Disease: The Ocular Consequences of Elevated Uric Acid
Elevated uric acid is increasingly linked to glaucoma, retinal vascular disease, macular degeneration, and ocular inflammation. Through endothelial dysfunction and oxidative stress, hyperuricemia may impair ocular microcirculation. Evaluating uric acid levels may be an overlooked step in protecting long-term visual and vascular health.

David Stephen Klein, MD FACA FACPM
Mar 73 min read


Vitamin D and Thyroid Function
Vitamin D plays a critical role in thyroid health by regulating immune tolerance, gene expression, and thyroid hormone sensitivity. Low vitamin D levels are strongly associated with autoimmune thyroid diseases such as Hashimoto’s thyroiditis and Graves’ disease, as well as persistent hypothyroid symptoms despite “normal” lab values. Optimizing vitamin D supports immune balance, improves thyroid hormone signaling, and may reduce autoimmune activity.

David Stephen Klein, MD FACA FACPM
Mar 34 min read


Seasonal Affective Disorder
Seasonal affective disorder is not simply “winter blues,” but a biologically driven condition caused by reduced light exposure and circadian disruption. Shortened daylight alters melatonin, serotonin, and cortisol signaling, leading to fatigue, low mood, sleep disturbance, and cognitive slowing. When recognized early and treated with targeted light therapy, vitamin D repletion, and circadian-based interventions, seasonal affective disorder is highly manageable and often fully

David Stephen Klein, MD FACA FACPM
Feb 284 min read


Overfunctioning: When Competence Becomes a Coping Strategy
Overfunctioning is not a psychiatric diagnosis but a behavioral pattern rooted in adaptation. It can create stability, achievement, and leadership—yet when rigid or chronic, it fuels burnout, resentment, and physiologic stress. This article explores how overfunctioning becomes harmful, how it affects relationships and stress hormones, and how to restore flexibility without sacrificing competence.

David Stephen Klein, MD FACA FACPM
Feb 285 min read


Magnesium Deficiency: The Most Common Mineral Deficiency. What Does it Do?
Magnesium deficiency is common and often missed. Low magnesium contributes to arrhythmias, insulin resistance, anxiety, and metabolic dysfunction—frequently despite “normal” serum labs. Learn how magnesium affects cardiac stability, insulin signaling, and neuroexcitation, and why correcting intracellular deficiency may improve cardiometabolic and neurologic health.

David Stephen Klein, MD FACA FACPM
Feb 204 min read
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