Advanced Wilderness Life Support (AWLS)

When we think about wilderness medicine, we often think about traumatic injuries, altitude illness, hypothermia, and dehydration. But what happens when the medical challenge comes from something we eat? For people with celiac disease, gluten exposure can trigger an immune response that affects the small intestine and can have consequences well beyond the digestive system. And celiac disease is onl...

What if spending more time in the wilderness could help you stay healthier, stronger, and more independent with time. In this episode, we explore VO₂ max, one of the most important measures of cardiovascular fitness and a powerful predictor of long-term health. We’ll examine how hiking, backpacking, mountain running, and other outdoor activities can improve aerobic capacity, build physiological re...

Lightning kills hikers and climbers every year, often because they underestimate the danger or wait too long to act. This podcast focuses on the critical decisions that can save lives in the mountains: recognizing the warning signs, understanding when to turn back, and knowing what to do when a thunderstorm approaches. Because when it comes to lightning, the right decision made early can mean the...

When we’re hiking or exercising for hours, especially in hot conditions, staying hydrated seems simple: drink water. But the physiology of hydration is much more interesting than that. In this episode, we’ll look at what actually happens after you take a drink—how your intestines absorb water, why sodium is important, and why a small amount of carbohydrate can dramatically influence the absorption...

In this episode, Cal Olmer shares the story of his ill-fated attempt to walk for 24 hours straight without stopping to rest. What began as a personal challenge turned into a hard lesson in endurance when fatigue set in, painful blisters developed, and then rain moved into the area. Cal and his companion eventually made it back to the car—but barely. The story is both encouraging and cautionary, of...

What happens to the human body when you spend thousands of miles walking through mountains, deserts, and remote wilderness? In this podcast, Titus Humphreys shares what he has learned from his remarkable long-distance hiking experiences. We explore the physical and medical challenges of extreme endurance hiking—including fatigue, dehydration, injuries, nutrition, sleep, altitude, and the remarkabl...

What happens when you spend days, weeks, or even months walking through some of the most demanding landscapes on earth? In this first conversation with Titus Humphreys, we explore the remarkable treks that have taken him far beyond the ordinary trail experience. Titus shares what draws him to long-distance journeys, what he has learned about endurance and the human body, and what it is really like...

Why does your heart rate keep climbing during a long hike even though you’re walking at the same pace—or even slowing down? This phenomenon is called cardiovascular drift, and it is an important physiologic response to prolonged exercise. In this podcast, we explore what happens to the heart during a long hike as dehydration, heat, altitude, and fatigue begin to affect the cardiovascular system. T...

Most of us think of tick bites as a risk for Lyme disease. But ticks can transmit a surprising number of other infections—including a rare and potentially deadly virus known as Bourbon virus. First identified in Bourbon County, Kansas, in the United States in 2014, Bourbon virus is believed to be transmitted by ticks, particularly the lone star tick. It can cause fever, severe fatigue, headache, m...

At just 16 years old, Brock Holloway set out into the mountains expecting an adventure. Instead, he found himself in a life-threatening battle with two of the most dangerous forms of altitude illness: high-altitude cerebral edema (HACE) and high-altitude pulmonary edema (HAPE). In this gripping episode, Brock shares his experience of becoming seriously ill at altitude and the frightening progressi...

Sunscreen technology is evolving rapidly, offering better protection, improved cosmetic feel, and a growing focus on environmental sustainability. In this episode, we explore the latest advances in sun protection, including next-generation UV filters such as Bemotrizinol (Tinosorb S), innovations in engineered zinc oxide, antioxidant-rich plant extracts, and ingredients that enhance water resistan...

In this episode, our hosts Sophie Emery, Kaylee Stark, Noelle Lordahl, and Kate Persak explore how a nonprofit organization is transforming the lives of girls ages 11–17 through backpacking and other outdoor adventures. More than just learning outdoor skills, these experiences build confidence, leadership, responsibility, resilience, and lifelong friendships.  We’ll discuss how spending time in na...

Rabies remains one of the deadliest infections known to medicine, yet it is almost entirely preventable with prompt treatment. In this episode, Alastair Milne from the medical school in the University of Nicosia in Cyprus, explores how the virus is transmitted, and describes a practical scenario to understand how fatalities from this disease can be avoided.

Cuts and lacerations are among the most common injuries encountered in the backcountry, but in wilderness medicine the greatest threat often isn’t the wound itself—it’s infection. In this episode of the AWLS Wilderness Medicine Podcast, we explore why nearly every wilderness wound should be considered contaminated and why thorough irrigation and cleaning are often far more important than closing t...

Join mountain medicine expert Dr. Sebastián Donato for a fascinating discussion on the realities of altitude illness on Aconcagua , the highest mountain in Western and Southern Hemispheres.  Drawing from recent rescue operations and real patient cases, Dr. Donato explores the recognition, prevention, and treatment of acute mountain sickness (AMS), high-altitude pulmonary edema (HAPE), and high-alt...

In Part 2 of this fascinating podcast series, Dr. Matt Gunderson explores more about Hantavirus, a rare but potentially deadly infectious disease carried primarily by rodents.  Dr. Gunderson also breaks down the biology of Hantavirus, This episode provides more details and cases of one of the world’s most intriguing zoonotic diseases. 

Canyoning combines hiking, climbing, rappelling, swimming, and navigating through narrow canyons carved by water, creating one of the most exciting adventure sports in the outdoors. However, the same features that make canyoning thrilling also create significant risks. Participants may face foot entrapment in fast-moving water, where a trapped foot can lead to drowning. Rope-related incidents, inc...

In Part 1 of this fascinating podcast series, Dr. Matt Gunderson explores the origins and characteristics of Hantavirus, a rare but potentially deadly infectious disease carried primarily by rodents. Listeners will learn how the virus was first identified, where it is commonly found, and how it spreads to humans. Dr. Gunderson also breaks down the biology of Hantavirus, its symptoms, and the envir...

In this episode, Dr. Kathy Vidlock shares a compelling real-world wilderness medicine experience involving two runners found on a remote trail, each suffering from different medical emergencies. Through the lens of AWLS (Advanced Wilderness Life Support) protocols, Dr. Vidlock explains how returning to the fundamentals of patient assessment, observation, history-taking, and clinical reasoning allo...

In this episode, Matthew McKinnon takes a deep dive into the often-overlooked but potentially fatal condition known as suspension trauma. Commonly associated with climbing, rope access work, and wilderness rescue, suspension trauma can develop rapidly when a person is left hanging motionless in a harness. Matthew breaks down the physiology behind the condition, explaining how restricted blood flow...

In this episode, Dr. Kathy Vdilock explores the emerging role of peptides in wilderness and remote medicine, where limited resources demand creative and effective solutions. From secretagogues that stimulate natural hormone release to angiogenic and tissue-healing peptides that may accelerate recovery from injury, we unpack how these compounds are being discussed and used at the edge of traditiona...

This episode explores the alarming rise in avalanche-related deaths across the Alps this year. We break down what’s driving this deadly trend—from unstable snowpack layers and rapid temperature swings to human decision-making in high-risk terrain. Drawing on insights from avalanche science and recent incidents, this episode unpacks how avalanches form, why they’ve been more frequent and severe, an...

In this episode, Dr. Kathy Vidlock explores the physiology and real-world risks of pulmonary edema triggered by both intense physical exertion and high-altitude exposure. Drawing on clinical insight and wilderness medicine experience, she explains how fluid can accumulate in the lungs during extreme exercise and conditions like High-Altitude Pulmonary Edema, breaking down the underlying mechanisms...

In the towering peaks of the Austrian Alps where adrenaline and precision define every run, one moment can change everything. This episode tells the story of Lucas Hungerford, an experienced skier whose life took a devastating turn after launching off a terrain park lip and suffering a catastrophic crash. What began as a routine descent quickly became a fight for survival—marked by severe physical...

Long days on the trail, limited hygiene options, sweat, and wet clothing can create the perfect conditions for vaginal bacterial and yeast infections during backcountry trips. In this episode, Layla Risdon explores why these infections are more common during hiking, backpacking, and remote expeditions. She discuss the basic biology behind bacterial vaginosis and yeast infections, the environmental...