well death can be preventable if you mean like staying out of the streets and being safe, but eventually as you continue aging you will die.
Canada, like all other countries, has many preventable causes of death. To name one, there is the issue of not wearing your seat belts.
Because all life must die, only death by certain illnesses is preventable.
Tobacco use is the single leading preventable cause of death in the US.
Smoking
Cigarette smoking is the single most preventable cause of death in the United States.
Smoking
Smoking related diseases (including Heart disease, emphysema, bronchitis, lung cancer, and others). If the 21% of adults who smoked all decided to quit, the largest preventable cause of death in the U.S. would be history.
obesity
Smoking
Accidents, Homicide, Suicide.
Heart disease
TOBACCO