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Wakefield actually claimed, the financial conflicts and research misconduct that later came to light, why the paper was retracted, and how its impact continues to shape conversations about vaccines and autism nearly three decades later.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.