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Adrenal Dysfunction and Adrenal Fatigue: Vital to Life, Yet Often Overlooked in Modern Medicine
The adrenal glands are among the body’s most vital yet overlooked organs, controlling stress adaptation, inflammation, blood pressure, metabolism, immune balance, and energy production. While severe adrenal failure such as Addison’s Disease is recognized in medicine, milder adrenal dysfunction often goes undiagnosed for years. Chronic stress, poor sleep, illness, medications, and nutritional deficiencies can impair adrenal function long before traditional testing reveals dise

David Stephen Klein, MD FACA FACPM
Jul 215 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


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
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