Researchers at Marian University wanted to find out whether lead—a toxic metal that damages children's brains and nervous systems—was hiding in affordable children's clothing. They tested 11 shirts in various colors from fast-fashion and discount retailers after noticing that lead was appearing in some garments but receiving little parent attention.
The study focused on children under 6 years old, who are most vulnerable to lead's harmful effects and most likely to put clothing in their mouths.
Every shirt tested exceeded safety limits
All 11 shirts purchased from four retailers contained lead levels above the U.S. federal safety limit of 100 parts-per-million (ppm). The researchers found that brighter colors—particularly red and yellow—tended to contain more lead than duller shades. Lead can enter clothing through metal components like zippers and buttons, but also directly into fabrics themselves. Some manufacturers use a lead-based chemical to help dyes bond to fabric and keep colors bright and lasting longer.
Chewing on contaminated clothes poses real risk
The study specifically looked at how lead exposure happens when young children—who naturally explore by putting things in their mouths—chew on contaminated clothing. Even brief contact with these fabrics could expose children to unsafe levels of lead. Since children under 6 are especially vulnerable to lead's effects on brain development and behavior, this everyday exposure is concerning.
Sample size was small; more testing needed
This was early-stage research presented at an academic conference, so the findings have limitations. Only 11 shirts from four retailers were tested, meaning we cannot yet say how widespread the problem is across all fast-fashion brands or globally. The study also did not test items from other categories like pants or undergarments. Parents should know this is a warning signal rather than definitive proof affecting all clothing.
Practical steps to reduce your child's exposure
- Check purchase labels and favour brands that test for heavy metals; ask retailers directly about lead testing.
- Wash new clothes before wearing and discourage mouth-chewing on fabric, especially brighter-colored items.
- Consider secondhand or higher-quality clothing alternatives when budget allows, as fast-fashion items showed consistent contamination.