Dr. Lyndia Dernis has been an anesthetist since 2004. Aware of the important role played by the operating theatre in the generation of waste and greenhouse gas emissions within a hospital, she created and leads an action group to actively reduce the ecological footprint of St Mary’s operating theatre and is now responsible for the sustainable care sub-committee of the CIUSSS de l’ouest de l'île de Montréal. Part of her work is to raise awareness among caregivers of the importance of plastic waste and endocrine disruptors in medical equipment and also to find ways to reduce the use of single-use plastics in her institution.