Do traditional Japanese lacquer bowls contain toxic materials?
Depends on the product. New, certified cookware is low risk. Old or imported ceramics may leach heavy metals.
What's actually in it
Heavy metals like nickel, chromium, lead, and cadmium can leach from cookware, ceramics, and food storage containers. Acidic foods speed up leaching.
Stainless steel can release nickel and chromium. Older or imported ceramics may contain lead in the glaze. Even "food-safe" products can leach trace amounts under repeated use and heat.
What the research says
A 2026 study in biol psychol looked at chemical exposure from everyday products and found: Delta-Beta Coupling During Social Stress and Recovery in Infancy: An EEG Study Using the Face to Face Still-Face model..
Butti N(1), Piazza C(2), Mascheroni E(3), Wigley ILCM(4), Falivene A(2),.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Delta-Beta Coupling During Social Stress and Recovery in Infancy: An EEG Study Using the Face to Face Still-Face Paradigm. | Biol Psychol | 2026 |
What to use instead
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