Instant Noodle Cups (Boiling Water in Plastic)

Pouring boiling water directly into a polystyrene or plastic-lined cup.

53Moderate burden · out of 100

Cleaner swapCook the noodles in a pot and eat from a ceramic bowl

How this score is built

100Start
77Chemical hazard 5 × 4.6−23
63.4Everyday exposure 4 × 3.4−13.6
53Persistence 4 × 2.6−10.4
ModerateThe band53 sits in 40–59.

What each input rests on

The three ratings behind the score, and the studies each rests on
Input	Rating	Evidence
Chemical hazard	5/10	unsourced input
Everyday exposure	4/10	Polystyrene foam instant-noodle containers became vulnerable above about 70 °C and released nanoplastics; containers in contact with oil-fried noodles and 99 °C water released about 10^4 times more particles than non-oil containers. Nanoplastics release from polystyrene foam containers · J Hazard Mater 2025 DOI 10.1016/j.jhazmat.2025.140269 · PMID 41161176 · Abstract · read 2026-10-26
Persistence	4/10	unsourced input

Ratings are editorial. A study listed here supports the rating; it did not compute it. How the index is built

What this means for you

Boiling water in a plastic or foam cup increases microplastic and chemical migration into the broth. Transferring to a pot and bowl avoids heating the plastic.

Evidence strength: moderate

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Lower-exposure choices

Glass Food StorageMinimal · Plastics

All 14 plastics entries, highest burden first →