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Kitchen

PFASBPA & BPSPhthalatesMicroplastics

The kitchen is the highest-risk room in most homes. Non-stick cookware releases PTFE particles and PFAS gases when heated. Tinned food exposes you to BPA and BPS. Plastic containers leach phthalates and microplastics into food, especially when heated. The good news: the kitchen is also the room where a handful of targeted swaps produce the biggest reduction in daily chemical exposure.

What to look out for

Non-stick cookware (Teflon / PTFE)

Contains: PFAS / PTFE
Critical
Why it matters

PTFE coating degrades above 260°C, releasing PFAS gases and particles. A pan left on high heat reaches this temperature in minutes. Birds in nearby rooms have been killed by the fumes. The coating also scratches over time, shedding particles directly into food.

The swap

Cast iron, carbon steel, or stainless steel cookware

Cast iron is the most affordable. Carbon steel heats faster. Stainless steel is the easiest to clean. All last a lifetime with basic care.

Tinned and canned food

Contains: BPA & BPS
High
Why it matters

The majority of food cans are lined with epoxy resins containing BPA or its replacement BPS. Acidic foods like tomatoes and citrus leach more. BPA is detectable in the blood of people who eat canned food regularly.

The swap

Fresh, frozen, or glass-jarred alternatives

Brands like Biona and Jovial use BPA-free Tetra Pak cartons or glass jars. Frozen vegetables are nutritionally comparable to tinned and carry no lining risk.

Plastic food storage containers

Contains: BPA, BPS, Phthalates, Microplastics
High
Why it matters

All plastics shed microplastics over time. Heating plastic containers in the microwave dramatically accelerates leaching. Studies find hundreds of thousands of plastic particles per litre of liquid stored in polypropylene containers.

The swap

Glass or stainless steel containers with metal or silicone lids

Pyrex glass containers are a widely available and cost-effective option. For packed lunches, stainless steel bento boxes are durable and easy to clean.

Plastic-lined coffee cups and takeaway cups

Contains: Microplastics, BPA
High
Why it matters

Most disposable cups have a thin plastic lining. A 2019 study found that hot liquid dissolves this lining, releasing approximately 25,000 micron-sized plastic particles per 100ml of liquid into your drink.

The swap

Reusable glass or stainless steel travel cup

Frank Green, Klean Kanteen and Fellow all make high-quality options. Avoid bamboo cups, which typically use melamine plastic binders that also leach at high temperatures.

Why it matters

Boiling water inside a plastic kettle releases microplastic particles and can leach BPA from the lining. A 2024 study found plastic kettles release millions of particles per boil.

The swap

Stainless steel or glass kettle

Ensure the kettle interior is stainless steel rather than plastic-coated. Brands: Smeg, Cuisinart, or any basic stainless steel option.

Cling film and plastic wrap

Contains: Phthalates, PVDC
Medium
Why it matters

PVC-based cling films contain plasticisers including phthalates that migrate into fatty foods on contact. Never use cling film to cover food being heated.

The swap

Beeswax wraps, silicone stretch lids, or plate-on-plate covering

Beeswax wraps work well for bread, cheese and fruit. Silicone stretch lids seal bowls and cut vegetables. Both are reusable and long-lasting.

Plastic cooking utensils

Contains: Microplastics
Medium
Why it matters

Stirring with nylon or plastic spatulas in hot pans has been shown to release millions of microplastic particles per use. Heat accelerates shedding significantly.

The swap

Wooden, bamboo, or stainless steel utensils

Wooden utensils are inexpensive and effective. Avoid silicone tools labelled as containing fillers: look for 100% food-grade platinum silicone if using silicone.

Microwave popcorn bags

Contains: PFAS
Medium
Why it matters

The inner lining of microwave popcorn bags is coated with PFAS to prevent oil absorption. Heating vaporises these compounds directly into the food.

The swap

Plain popcorn kernels popped in a stainless steel pot or glass microwave bowl

Takes two minutes on the hob in any heavy-based pan with a lid. No PFAS, no artificial flavourings.

Go deeper

Quick wins

Do these first. Biggest impact, least effort.

Stop using non-stick cookware immediately. A cast iron or stainless steel pan is available at almost every price point.
Replace your plastic kettle with a stainless steel or glass model.
Never heat food in plastic containers or cover hot food with cling film.
Switch from tinned tomatoes to cartons or glass jars.
Replace plastic food storage containers one set at a time as they wear out.