High altitude changes the rules of the game for the human body. As oxygen levels drop, systems we usually take for granted—our heart, lungs, metabolism, and immune response—are suddenly asked to work harder. For some people, that challenge is barely noticeable. For others, especially those living with chronic medical conditions, altitude can quietly turn a manageable illness into a serious problem.

In this episode, Dr. Kathy Vidlock explores how high altitude can exacerbate a wide range of medical conditions—from common issues like high blood pressure to more complex diseases such as autoimmune disorders, coronary heart disease, diabetes, and chronic obstructive pulmonary disease. We’ll break down what actually happens inside the body at elevation, why certain conditions are more vulnerable to hypoxia, dehydration, and cold stress, and how symptoms can present differently in the mountains than they do at sea level.

Whether you’re traveling to altitude, working in the backcountry, or caring for someone with a chronic medical condition, this episode will help you understand the risks, recognize early warning signs, and make informed decisions before small problems become emergencies.