Final answer:
Having a relative diagnosed before the age of 65 increases the chance of developing CHD, as age is a major risk factor for cardiovascular diseases.
Step-by-step explanation:
An individual's chance of developing Coronary Heart Disease (CHD) is influenced by several factors, including age and family history. Having a relative who is diagnosed before the age of 65 gives a person a higher chance of developing CHD. This is because age is a major risk factor for cardiovascular diseases. With each passing decade of life, there is a tripling of cardiovascular disease risk.
For example, if a person's parents had cardiovascular disease, their risk of developing CHD is three times greater than the average. In addition to age and family history, there are also modifiable risk factors such as lifestyle choices that can impact the likelihood of developing CHD.
Overall, age and family history play important roles in the development of Coronary Heart Disease, and individuals with relatives diagnosed before the age of 65 are at a higher risk.