**Question:** Which of the following is non-modifiable risk factor for CHD

A. Age
B. Gender (male)
C. Family history of CHD
D. Race/Ethnicity (African Americans, American Indians, and Hispanic Americans)

**Core Concept:**
Non-modifiable risk factors for coronary heart disease (CHD) are those factors that cannot be changed through lifestyle modifications or interventions. They are inherent to an individual and contribute to an increased risk of developing CHD. CHD is a type of cardiovascular disease characterized by the narrowing or blockage of coronary arteries due to the accumulation of fatty deposits (atherosclerosis).

**Why the Correct Answer is Right:**

A. Age (Ages 45-54 years for men and ages 55-64 years for women) - Age is considered a non-modifiable risk factor as it is a biological characteristic that increases over time.

B. Gender (Male) - Male gender is a non-modifiable risk factor because it is determined by biological sex, which is not within a person's control.

C. Family history of CHD - A family history of CHD is a non-modifiable risk factor since it is based on genetic and familial predisposition, not influenced by an individual's behavior or lifestyle.

D. Race/Ethnicity (African Americans, American Indians, and Hispanic Americans) - Race/Ethnicity is considered a non-modifiable risk factor due to its genetic and cultural origins, which are beyond an individual's control.

**Why Each Wrong Option is Incorrect:**

Option A (Age) is incorrect because age can be managed by increasing awareness and promoting healthy lifestyle choices among the elderly population. However, the question specifically refers to the risk factor as non-modifiable, which is why age is chosen as the correct answer.

Option B (Gender) is incorrect because it is not modifiable. While promoting healthy lifestyle choices can reduce the impact of gender-related risk factors, the question refers to gender as a non-modifiable risk factor.

Option C (Family history of CHD) is incorrect because genetic and familial predisposition make it a non-modifiable risk factor. Lifestyle changes or interventions cannot change an individual's family history of CHD.

Option D (Race/Ethnicity) is incorrect as it refers to cultural and genetic factors that are not within an individual's control. While promoting healthy lifestyle choices can help reduce the impact of race/ethnicity-related risk factors, race/ethnicity itself is considered a non-modifiable risk factor.

**Clinical Pearls:**

1. Age and Gender: Promoting a healthy lifestyle and early intervention can reduce the impact of these risk factors but cannot be considered modifiable.
2. Family History: Recognizing and addressing family history of CHD is crucial, but it is a non-modifiable risk factor. Lifestyle changes cannot change an individual's familial predisposition to CHD.
3. Race/Ethnicity: While promoting healthy lifestyle choices can help reduce the impact of race/ethnicity