Is it safe to give babies dark chocolate snacks before age two?

What's actually in it

Dark chocolate contains cadmium and lead from the cacao growing process. An adult can probably handle a square a day. A toddler's body is much smaller, with a developing brain that's more sensitive to metal exposure. Products marketed to toddlers with dark cacao (teething biscuits, Larabars, chocolate puffs) concentrate the metal exposure in small bodies.

Pediatric heavy metal guidance is much tighter than adult guidance.

What the research says

A 2026 study in Food Chem Toxicol looked specifically at dark chocolate, heavy metals, and neurodevelopment in children. The study found measurable effects on neurodevelopmental markers from regular exposure at levels seen in toddler-marketed cacao products. The effect was dose-dependent and strongest in the youngest kids.

For babies and toddlers, skip dark chocolate until age 4 or so. If a cacao-flavored treat is desired, carob powder is a plant-based alternative without the cadmium profile. For older kids (5+), dark chocolate is fine in moderation (one small piece, not a daily bar). As You Sow and Consumer Reports publish heavy-metal testing of chocolate brands; some (Guittard, Ghirardelli in some varieties) consistently test lower.