Which recommendations family doctors and travel health practitioners can provide to their patients, to reduce their environmental footprint when travelling? Avoiding flying is the biggest action a traveler can take to reduce their greenhouse gas emissions. Staying at eco-lodges, or carbon offsetting, may help, but one must be aware of false or exaggerated claims on their impact. Using UV light, filters, halogens or boiling water, are effective ways to disinfect water and reduce the waste created from plastic water bottles. Given the large carbon footprint of medications and laboratory exams, limiting prescription of antibiotics or antimalarials in pre-travel consultations, or limiting unnecessary laboratory exams in returning travelers by following the latest recommendations, could reduce greenhouse emissions of the medical practice.