Final answer:
Cancer is the most preventable common cause of death, with lifestyle choices such as smoking, diet, and exercise being significant preventive factors. Smoking cessation alone could prevent a substantial proportion of cancer deaths.
Step-by-step explanation:
The most preventable common cause of death among obesity, cancer, stroke, and dementia is cancer. Avoidable lifestyle choices such as smoking, eating an unhealthy diet, and not exercising contribute significantly to the development of cancer. It is estimated that not using tobacco could prevent around 25 percent of cancer deaths, while right eating habits, regular exercise, and maintaining a healthy weight could prevent another 35 percent of cancer deaths. Furthermore, lung cancer, heavily linked to smoking, accounts for the highest percentage of cancer fatalities.
The majority of cancer deaths could be prevented by making healthier lifestyle choices, emphasizing the preventable nature of this disease. For instance, smoking cessation is a critical step, as it is not only the leading cause of lung cancer but also impairs cardiovascular health and is the most significant factor in preventable deaths.