Is it safe to buy yogurt in plastic cups for kids?
Occasionally yes, daily not ideal. Yogurt is fatty and slightly acidic, which pulls plastic additives faster than plain foods.
What's actually in it
Yogurt cups are usually polypropylene or polystyrene. Yogurt is fatty (milk fat) and mildly acidic (lactic acid). Both speed plasticizer and microplastic migration from the cup. Kids often eat yogurt daily.
Sometimes the foil lid uses a plastic-aluminum composite that also touches the top layer of yogurt.
What the research says
A 2025 study in J Hazard Mater mapped phthalate intake and found fatty acidic foods in plastic were top contributors. A 2025 study documented microplastics and endocrine disruptors in dairy-based packaging.
Buy yogurt in glass jars when you can. Or buy plain yogurt in a large tub (still plastic, but less packaging area per serving) and serve in a ceramic bowl.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Plastic additives in the diet. | J Hazard Mater | 2025 |
| Microplastics and endocrine disruptors in infant formula brands. | Environ Res | 2025 |
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