Global environmental change, also known as global warming, has been a growing concern for some time. The International Panel on Climate Change states that environmental change is anthropogenic. The World Health Organization defines anthropogenic climate change as a cause of human and human activity. The main causes of environmental change around the world are the increase in carbon dioxide and greenhouse gases.1 In the past, when looking at environmental change, the main focus was on the environment and the earth's ozone layer , but climate change has a very immense impact. effect on human health. This paper specifically examines how global environmental change impacts the health of people residing in Canada. Over the past decade, global environmental change has increased Canada's weather temperatures by 1.6 degrees Celsius.2 With climate change, there is expected to be an increased spread of infectious diseases in Canada. Another factor that can affect human health due to climate change is extreme weather events. The World Health Organization defines infectious disease as a disease caused by pathogenic microorganisms, such as bacteria, viruses, parasites or fungi; the disease can be transmitted directly or indirectly, from person to person. In Canada, increased attention is being paid to waterborne diseases.3 Waterborne pathogens are numerous and widespread; some examples include giardia, cholera, cryptosporidium, rotavirus, enterovirus, Coxsackie virus, cyclospora, and hepatitis A and E viruses.4 Canada has waterborne diseases for a quiet period; an example would be the severe cholera outbreak in Walkerton in 2000. The increase in infectious and waterborne diseases would increase extremely and increase precipitation, flooding and snowstorms. All of these factors are expected to increase in Canada due to climate change, with rising temperatures causing sea and ocean levels to rise.3 Global environmental change also has a huge effect on extreme weather. Extreme weather conditions include; extreme heat, thunderstorms, heavy rain, floods and droughts. Extreme weather conditions affect human health in many different aspects. One-way extreme weather affects human health due to extreme heat waves. Populations typically have a threshold for temperature that, if exceeded by a significant amount, whether hot or cold, would typically lead to mortality.1 There is a positive correlation between increased temperature and mortality of individuals in Canada. Extreme heat affects older women, children or people more than cardiovascular disease and hypertension.5 Another factor is that rising temperatures are causing ice and snow to melt in northern Canada, changing the surrounding environment by increasing the water level in the sea and ocean.