BrainStuff Season 3 Episode 3 Why Do Some People Sneeze In Sunlight?

Why Do Some People Sneeze In Sunlight? is the third episode of the third season of BrainStuff, a science podcast that seeks to answer some of the most interesting questions about how things work in our world. In this episode, host Christian Sager sets out to explore the strange phenomenon of photic sneezing, a condition in which some individuals sneeze when exposed to bright light.

The episode begins with a brief introduction to what causes sneezing, a reflexive response to irritants in the nasal passages. Sager explains that sneezing is a way for the body to clear out any debris or irritants that may be present, such as pollen, dust, or viruses. He then goes on to discuss the peculiar case of photic sneezing, which affects an estimated 18 to 35 percent of the population.

The episode covers a range of theories regarding the cause of photic sneezing, from genetic predisposition to conditioned responses. Sager speaks with Dr. Rachel Herz, a neuroscientist and expert on the psychology of smell and taste, who suggests that photic sneezing may be a remnant of an older reflexive response in which bright light signaled danger or the presence of a predator.

To delve deeper into the science of photic sneezing, Sager interviews Dr. Kathleen C. Richards, an ophthalmologist and associate professor of clinical ophthalmology at the Ohio State University Wexner Medical Center. Dr. Richards explains the role of the trigeminal nerve in the sneeze reflex and how it's possible for bright light to stimulate this nerve and trigger a sneeze.

Sager also considers the social implications of photic sneezing, discussing the challenges that individuals with the condition may face in everyday life. Researchers have found that photic sneezing can be exacerbated by environmental factors such as wind or certain medications, and that it may be more common in individuals with certain medical conditions such as migraines or allergies.

Throughout the episode, Sager strikes a balance between scientific analysis and personal anecdotes. He recounts his own experiences with photic sneezing and reflects on how the condition has shaped his life. He also shares stories from listeners who have written in to share their own thoughts and experiences with the condition.

Overall, Why Do Some People Sneeze In Sunlight? is a fascinating exploration of a phenomenon that many of us may take for granted. Through interviews with experts and personal reflections, the episode sheds light on the science behind photic sneezing and what it means for those who experience it on a regular basis. Whether you're a fellow photic sneezer or simply curious about the quirks of the human body, this episode is sure to provide plenty of insights and fascinating tidbits.