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Low-Dose Lithium for Mild to Moderate Depression: Can a Time-Tested Mineral Improve Mood, Protect the Brain, and Promote Healthy Aging?
Could a medication long used for bipolar disorder also help support mood, protect the brain, and promote healthy aging at much lower doses? Emerging research suggests low-dose lithium may enhance neuroplasticity, reduce neuroinflammation, improve mitochondrial function, and influence pathways involved in depression and cognitive decline. Learn the current science, safety considerations, and how a systems-based evaluation may improve outcomes.

David Stephen Klein, MD FACA FACPM
Jul 2812 min read


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


Hashimoto’s Thyroiditis: Diagnosis, Root Causes, and Modern Treatment Strategies
Hashimoto’s thyroiditis is the most common autoimmune cause of hypothyroidism, yet many patients remain undiagnosed for years because standard thyroid testing often misses early dysfunction. Understanding the immune attack on the thyroid, the role of inflammation, nutrient deficiencies, genetics, and environmental triggers can help identify the condition sooner. Early diagnosis and targeted treatment may help restore thyroid function and improve long-term health outcomes.

David Stephen Klein, MD FACA FACPM
Jul 175 min read


DHA and Dry Eye Disease: The Missing Nutrient in Ocular Surface Health
Dry eye disease is often treated with artificial tears, but emerging research suggests the problem may run much deeper. Deficiency of DHA, a critical omega-3 fatty acid concentrated in the retina and ocular surface, may contribute to inflammation, tear instability, and meibomian gland dysfunction. Understanding the nutritional connection between DHA and ocular health may provide a more effective long-term strategy for improving comfort, protecting vision, and reducing chronic

David Stephen Klein, MD FACA FACPM
Jul 146 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
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