Is it safe to buy smoothies from a plastic smoothie bowl?
Not ideal. Acidic, cold smoothies still leach from plastic, especially with a plastic straw and lid.
What's actually in it
Smoothies from a to-go place arrive in a PET or polypropylene cup with a plastic straw and plastic dome lid. They're slightly acidic (fruit) and carry some fat (nut butters, avocado, dairy). Cold slows leaching but doesn't stop it.
The straw is the worst part: it sits in the drink, bending and grinding against the lid.
What the research says
A 2025 study in J Agric Food Chem showed plastic particle release in cold water, just fewer than hot. A 2025 study documented dietary phthalate intake from packaged foods.
Bring a reusable glass or stainless steel cup with a silicone straw. Most smoothie shops will fill it. Blend smoothies at home for the cleanest version.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Release of Nanoplastics from Polypropylene Food Containers. | J Agric Food Chem | 2025 |
| Plastic additives in the diet. | J Hazard Mater | 2025 |
What to use instead
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