Smoking is a health hazard that can be fatal to smokers. When people smoke in their 50s, they are more susceptible to cardio vascular accidents compared to people in the same age group. Research has shown that people who smoke in their 50s are more likely to experience Cardio Vascular Accident (CVA) compared to people who are nonsmokers are likely to experience the same at67 years or later. According to a scientific research conducted by Sophie Hill, smokers who are in their 50s experience a risk factor of 16 % for Cardio Vascular Accident (CVA) that is considered a red zone for cardiovascular diseases such as heart attacks and strokes. This risk factor is similar to what a 67 year olds people experience (Hill, 2010, pg. 7). When discussing Cardio Vascular Accident (CVA), the red zone is the danger zone where people are vulnerable to this health complication. Sometimes people miss the extent of the danger. Although the incidence of 16% may appear to be noticeably lower, the typical likelihood is still half that for other people, meaning that the danger is double for someone in that age range, which is still pretty significant. With age, the susceptibility factors tend to become more prevalent. A person has more time to modify their way of life with a five-year risk timeline than with a ten-year timeframe.