Gerald Markowitz and David Rosner: Why is lead so dangerous to humans?

Why is lead so dangerous to humans?

Lead is a metallic element that’s distributed across Earth’s crust. When it enters the human body, it can disrupt many critical processes that span various systems, producing a diverse set of symptoms. So, just how bad is lead for human health? And if it’s really that dangerous, how did it get into so many products? Gerald Markowitz and David Rosner dig into the lethal history of lead. [Directed by Tim Rauch, narrated by Christina Greer, music by Salil Bhayani, cAMP Studio].

Lead exposure, long known to cause brain damage and developmental delays, was uncovered in the 1970s when researchers analyzed children’s baby teeth in major US cities. Despite mounting evidence and global warnings, lead became widely used in products like paint and gasoline, leaving a toxic legacy. Today, millions still face its effects, as removal remains slow and costly. The industry's campaign of denial and disinformation echoes tactics used by tobacco and oil interests.

Lead’s Silent Assault: How Industry Profits Trumped Health

Lead exposure disrupts vital processes throughout the human body, from damaging neurons to interfering with essential proteins. Even a schoolchildren’s “Tooth Fairy Project” in the 1970s revealed widespread contamination and lifelong health risks. Despite centuries of known harm, industry pushed lead into everyday products, fueling a public health crisis that persists to this day. Millions still drink from lead pipes, and removing the toxin remains a costly, unfinished task.