Most people don't think twice when pouring scalding hot coffee into a to-go cup or drinking through a plastic lid. However, heat can release microplastics, endocrine disruptors, and other unwanted substances.
Why should we care?
Even at low doses, chronic exposure to the following compounds can have a long-term impact on health.
BPA (bisphenol A) : A chemical compound used in the manufacture of rigid plastics, suspected of acting as an endocrine disruptor by mimicking hormones in the body.
Phthalates : Chemicals added to soft plastics (such as PVC) to make them flexible, also known to be endocrine disruptors
Microplastics : Tiny fragments of plastic, often invisible to the naked eye, resulting from the degradation of plastic products or intentionally added to industrial products, which are now found everywhere in the environment — and even in our bodies.
Studies show that substances such as BPA, phthalates or microplastics can affect:
- Hormonal balance
- Fertility
- Brain development
- The immune system
And one of the most common vectors of this exposure is hot drink containers.
What materials should be used for hot drinks?
When choosing a mug or thermos, consider heat resistance and chemical neutrality.
Safe materials:
- Stainless steel (inox): stable, without toxic coating
- Borosilicate glass: does not release any chemical compounds
- Lead-free glazed ceramic: ideal for domestic use
Use in moderation:
Food-grade silicone: BPA-free, heat-stable, suitable for lids or seals, but not for prolonged cooking
To avoid:
- Plastic (even “BPA-free”): may contain other disruptors
- Disposable cups (paper + plastic): heat degrades the inner plastic film
- Plastic lids: highly reactive to heat, often made of polystyrene or polypropylene
What materials should be used for hot food?
How you cook and store hot foods can also increase exposure to harmful substances.
To avoid:
- Non-stick pans (Teflon, PTFE ( polytetrafluoroethylene): at high temperatures, they release PFAS (per- and polyfluoroalkyl substances), also called “forever chemicals,” associated with hormonal, immune and metabolic disorders.
- Plastic microwave containers: Release BPA, phthalates, or their substitutes, especially in the presence of fat or acidity.
Safe alternatives:
- Stainless steel: ideal for cooking or transporting hot dishes
- Natural cast iron: very resistant, without coating
- Borosilicate glass: perfect for heating or storing food
- Food ceramic: gentle cooking, without chemical migration
In conclusion
Limiting your exposure to plastics and chemicals isn't about perfection, but about simple, everyday choices. It's not about feeling guilty about the occasional takeaway coffee, but about making more conscious choices when you can, because every drink counts, and so does its container!
That's why we designed a glass bottle, free with every subscription. Designed to let you enjoy your Daily Energy® without worrying about contaminants, it's also large enough to keep up with you all day—at the office, at the gym, or on the go.
- No plastic in contact with the drink
- Elegant, durable, and easy to clean
- Designed to preserve both your health and your pleasure
Happy coffee!
