Advanced Wilderness Life Support (AWLS)

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 remarkable ability of the human body to adapt and keep going.

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 to spend extended periods of time far from the comforts—and medical resources—of civilization. We also explore some of the medical experiences he has encountered along the way. What happens when your body begins to break down? How do you recognize when a problem is simply part of the challenge of a long trek and when it becomes a genuine medical emergency? Join us as Titus Humphreys takes us onto the trail—and shares the medical lessons he has learned along the way.

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. The heart is a pump—but the pump has to fill before it can pump. Understanding venous return will help you become a safer and more knowledgeable wilderness traveler.

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, muscle and joint pain, rash, and abnormalities in the blood—including low white blood cells and low platelets. In this episode, we’ll explore where Bourbon virus is found, how the lone star tick may spread it, what the illness looks like, why diagnosis can be difficult, and what wilderness travelers can do to prevent infection.

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 progression of symptoms that nearly cost him his life. His story provides a firsthand look at how quickly altitude illness can escalate—and why recognizing the warning signs and acting decisively can make the difference between life and death. We explore what happens to the brain and lungs at high altitude, why young and otherwise healthy people can develop severe altitude illness, and the critical decisions that must be made when someone begins to deteriorate in the backcountry. Brock’s story is more than a story of survival. It is a powerful lesson in altitude awareness, early recognition, prevention, rapid descent, and wilderness medical decision-making.

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 resistance and photostability. We’ll separate fact from marketing, discuss what “reef-safe” really means, and explain how these new technologies are helping outdoor enthusiasts stay better protected during long days in the sun. Whether you’re a hiker, climber, trail runner, or simply enjoy spending time outside, this episode will help you make informed choices about the next generation of sunscreens.

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 nature supports mental health, encourages personal growth, and helps break down financial and social barriers so more young women can experience the outdoors. Join us as we discover how adventure in the wilderness inspires the next generation of confident, capable leaders.

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 the skin. Through real-world wilderness cases, listeners will learn when wounds should be left open, why premature suturing can trap bacteria and lead to serious infections, and how proper wound care can make the difference between an uncomplicated recovery and a medical evacuation. Whether you’re a backpacker, climber, guide, first responder, or wilderness medicine provider, this episode offers practical, evidence-based principles for managing wounds safely when definitive medical care may be hours or days away.

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-altitude cerebral edema (HACE). Through dramatic stories of climbers who required emergency evacuations, listeners will gain valuable insights into the challenges faced by rescuers and medical teams operating in one of the world’s most demanding high-altitude environments. Recent data from Aconcagua show that altitude illness accounts for the majority of mountain evacuations, with HAPE being the single most common reason climbers require rescue. This podcast is ideal for climbers, wilderness medicine practitioners, guides, and anyone interested in the medical and human challenges of high-altitude mountaineering.

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, including improper rigging, equipment failure, and rappelling errors, can result in serious injury or death. Powerful waterfalls and recirculating pools, often called “hydraulics” or “keepers,” can trap swimmers underwater. Cold water exposure and prolonged immersion can lead to hypothermia, even in warm weather. Wet suits are essential, but have hidden dangers. Flash floods, falling rocks, slippery surfaces, exhaustion, and limited access to emergency rescue further increase the danger. In this fascinating episode, Dr. Benny Chen explores the unique hazards of canyoning and the essential skills, preparation, and decision-making required to safely enjoy this challenging sport.

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 environmental conditions that contribute to outbreaks. This episode provides an engaging introduction to one of the world’s most intriguing zoonotic diseases and lays the foundation for future discussions on diagnosis, treatment, and prevention.

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 allowed her to quickly recognize the underlying problems and begin effective treatment in the field. This practical discussion highlights the importance of mastering basic wilderness medicine principles when advanced tools and diagnostics are unavailable.

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 can lead to loss of consciousness and even death if not addressed quickly. He also covers the key warning signs to watch for in the field, practical strategies for prevention—including proper harness use and movement—and step-by-step guidance on safe and effective treatment. Whether you’re a climber, rescuer, outdoor professional, or backcountry enthusiast, this episode provides essential knowledge that could save a life.

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 traditional care. We also examine practical considerations—storage, stability, dosing challenges, and safety—alongside the ethical and regulatory questions that come with bringing advanced therapeutics into austere environments. Whether you’re a wilderness medicine provider or simply curious about the future of backcountry care, this conversation sheds light on a rapidly evolving frontier.

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, and what skiers, climbers, and mountaineers can do to reduce their risk. Whether you’re an experienced backcountry traveler or simply curious about mountain safety, this episode offers critical knowledge that could save lives.

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 a clear and practical way. Listeners will learn how to recognize early warning signs—such as shortness of breath out of proportion to effort, cough, and decreased performance—and understand why these symptoms can rapidly become life-threatening. The episode also covers prevention strategies, including proper acclimatization, pacing, and risk awareness, along with guidance on when immediate descent or medical care is critical. Whether you’re an athlete, climber, or backcountry traveler, this episode provides essential knowledge to help you stay safe in demanding environments.

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 injuries and a long, complicated recovery. But the story doesn’t end when the bones heal. Lucas continues to grapple with the invisible aftermath of PTSD, a condition that lingers long after the mountain is left behind. This episode explores the risks of high-performance skiing, the psychological toll of traumatic injury, and what it truly means to recover—both physically and mentally. It’s a story about resilience, fear, and the courage to face the mountain again, even when it’s no longer beneath your skis.

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 factors in the wilderness that increase risk, and the early symptoms to watch for while far from medical care. The episode also offers practical prevention strategies—including clothing choices, hygiene techniques, moisture management, and what items to pack in a wilderness first-aid kit. Whether you’re planning a weekend backpacking trip or a multi-day expedition, this episode provides important information to help women stay healthy and comfortable in the backcountry.