Episode 7, Part 1: The Diseases That Vaccines Prevent

We’ve spent a lot of time talking about the risks and controversies surrounding vaccines. But what about the diseases they’re designed to prevent?

In this episode of Deep Dives, Dr. Justin Smith takes a closer look at the infectious diseases that once shaped childhood and pediatric medicine—and how vaccination has dramatically changed how often we encounter them.

We’ll explore what these infections actually look like, why some are more dangerous than others, and why understanding the diseases themselves is an essential part of making informed vaccine decisions.

We’ll also discuss one of the great paradoxes of preventive medicine: the more successful vaccines become, the easier it is to forget why we needed them in the first place.

This isn’t about exaggerating the dangers of infectious diseases or dismissing questions about vaccines. It’s about understanding both sides of the risk-benefit equation.

Because the vaccine is visible. The disease it prevents often isn’t.

Deep Dives: Fear, Facts, and Finding Common Ground.

Episode 6: Why Trust in Medicine Has Declined

Trust in medicine wasn’t lost overnight, and we can’t rebuild it by simply telling people to “trust the science.”

In this episode of Deep Dives, Dr. Justin Smith explores how historical medical mistakes, pharmaceutical scandals, and the COVID-19 pandemic contributed to growing skepticism toward doctors, scientists, and public health institutions.

We’ll examine where medicine has fallen short, why communicating uncertainty matters, and how dismissing legitimate questions can damage relationships between physicians and families.

Most importantly, we’ll talk about what it takes to rebuild credibility—not through blind trust or false certainty, but through honesty, transparency, humility, and a willingness to have difficult conversations.

Because trust isn’t something medicine can demand. It’s something we have to earn.

Deep Dives: Fear, Facts, and Finding Common Ground.

Can we trust vaccine recommendations when pharmaceutical companies make money from vaccines? It’s a fair question—and one that deserves more than simply being told to trust the system.

In Episode 5 of Deep Dives, we follow the money: how vaccine economics actually work, where pharmaceutical incentives and conflicts of interest exist, and what safeguards are designed to separate financial interests from vaccine recommendations.

We’ll also talk about where skepticism is justified, where some common assumptions don’t match the evidence, and why transparency—not pretending conflicts don’t exist—is essential to rebuilding trust.

What exactly is in a vaccine—and should we be worried about it? In this episode of Deep Dives, we take a closer look at mercury, aluminum, formaldehyde, and preservatives: why they’ve been used, how much is actually present, what happens to them in the body, and what the evidence tells us about their safety.

Episode 3: Too Many, Too Soon?

Are kids getting too many vaccines too early? In this episode of Deep Dives, we take that concern seriously and look at why the modern vaccine schedule can feel overwhelming, how much antigen exposure children actually receive, and what we know about the immune system’s ability to handle it.

We’ll also dig into the evidence comparing children vaccinated on schedule with those who receive vaccines later, and talk about the often-overlooked tradeoffs of delaying. No dismissing the question—just a closer look at what the science actually tells us.

In 1998, a small study by Andrew Wakefield sparked one of the most influential vaccine scares in modern history—but the story behind the MMR controversy goes far beyond a single scientific paper. In this episode of Deep Dives, we examine what Wakefield actually claimed, the financial conflicts and research misconduct that later came to light, why the paper was retracted, and how its impact continues to shape conversations about vaccines and autism nearly three decades later.

Episode 1: Why Did Vaccines Become So Divisive?

Vaccines were once seen mostly as a medical tool, but over time they became tied to trust, politics, parenting, identity, and fear. In this episode, we look at how that happened—how changing public health messages, social media, personal stories, institutional distrust, and genuine uncertainty helped turn a medical question into one of the most emotionally charged debates in parenting. The goal isn’t to dismiss concerns or force agreement, but to understand why reasonable people can look at the same issue and come away with very different conclusions.

Episode 0: Welcome to Deep Dives

Welcome to Deep Dives, the podcast where we slow down, ask better questions, and explore the topics that matter most in parenting and children’s health. I’m Dr. Justin Smith, a pediatrician, and each season we’ll take an honest, evidence-based look at complex issues—starting with vaccines—not to tell you what to think, but to help you better understand the science, the stories, and the uncertainty. Whether you arrive convinced, skeptical, or simply curious, you’re invited to join the conversation with an open mind and a shared goal: finding common ground.