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Lactoferrin-Rich Colostrum and Better Sleep
Quality sleep depends on far more than melatonin. Emerging research suggests that lactoferrin-rich bovine colostrum may promote restorative sleep by reducing inflammation, supporting the gut-brain axis, balancing immune function, and maintaining healthy iron metabolism. Rather than acting as a sedative, lactoferrin helps restore the biologic environment necessary for healthier sleep—and potentially healthier aging.

David Stephen Klein, MD FACA FACPM
2 days ago11 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


What Is Sepsis? Recognizing the Symptoms and Early Signs of a Life-Threatening Infection
Sepsis is a life-threatening condition caused by the body’s extreme response to infection. Learn the early warning signs, risk factors, and why rapid treatment is critical to prevent organ failure and save lives.

David Stephen Klein, MD FACA FACPM
May 15 min read


Alpha-Gal Allergy: The Lone Star Tick and the Red Meat Reaction
Alpha-gal syndrome is a delayed allergic reaction to red meat triggered by the Lone Star tick. Unlike typical food allergies, symptoms may occur 3–8 hours after eating beef, pork, or lamb. Learn how tick exposure alters immune signaling, why reactions are delayed, how to diagnose alpha-gal IgE, and what steps help prevent serious allergic complications.

David Stephen Klein, MD FACA FACPM
Feb 253 min read


Measles Resurgence in Florida: Understanding the Risks, Prevention, and Cost–Benefit of Vaccination
Recent measles cases in Florida underscore how quickly this highly contagious virus can spread when vaccination rates decline. Measles carries significant risks including pneumonia and encephalitis, and outbreaks impose substantial public health costs. The MMR vaccine remains a highly effective and economically sound preventive strategy that protects individuals and vulnerable communities.

David Stephen Klein, MD FACA FACPM
Feb 195 min read


Influenza A and B Outbreaks: Why the Flu Season Comes in Waves
This year’s influenza season has followed a familiar clinical pattern, with an early surge of Influenza A infections followed by a later rise in Influenza B cases. While Influenza A is often associated with more severe illness and higher early hospitalization rates, Influenza B can extend the flu season and cause significant disease, particularly in children and older adults. Understanding this progression helps explain why flu activity persists later into the season and unde

David S. Klein, MD FACA FACPM
Jan 153 min read


Influenza Is Rising — COVID Is Still Circulating. Test Frequently
Influenza activity is rising as respiratory virus season accelerates, while COVID-19 continues to circulate at the same time. Because these two viruses often cause nearly identical early symptoms—fever, body aches, fatigue, sore throat, and cough—timely testing has become essential. The article emphasizes the importance of having combined at-home influenza and COVID tests readily available and using them immediately at symptom onset, rather than waiting several days.
Early i

David S. Klein, MD FACA FACPM
Jan 54 min read


Lactoferrin Containing Colostrum: Targeted Support for Sleep, Immunity, and Respiratory Health
Lactoferrin-rich colostrum occupies a unique niche at the intersection of mucosal immunity, systemic inflammatory control, and sleep regulation. By combining the broad matrix of colostrum with the targeted antiviral, antibacterial, and immunomodulatory activity of lactoferrin, these preparations can reduce the burden of upper respiratory infections, support resilient immune function, and modestly improve sleep quality in selected populations. As with any therapeutic nutrient,

David S. Klein, MD FACA FACPM
Dec 1, 20256 min read


The Ideal Bedroom Temperature for a Restful Night's Sleep
Sleep is one of the most powerful tools we have for health. By keeping your bedroom in the 60–67°F range, you give your body the environment it needs to achieve restorative rest. Simple adjustments to your room’s temperature, bedding, and clothing can lead to profound improvements in sleep quality and overall well-being

David S. Klein, MD FACA FACPM
Oct 1, 20254 min read


An Unexplored Connection: The Impact of Elevated Uric Acid Levels on Atrial Fibrillation Development
Atrial fibrillation (AF) is a common form of irregular heartbeat that can lead to severe complications, including stroke and heart...

David S. Klein, MD FACA FACPM
Apr 18, 20258 min read
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