Strongest risk factor for primary hypertension in children and adolescents?

Strongest risk factor for primary hypertension in children and adolescents?

• A. Elevated BMI
• B. Family history
• C. Low physical activity
• D. High salt intake

Answer: (A)

Elevated BMI is the strongest risk factor for primary hypertension in children and adolescents. Obesity increases blood pressure through multiple interrelated mechanisms: greater sympathetic nervous system activity, activation of the renin-angiotensin-aldosterone system, insulin resistance, endothelial dysfunction, and inflammatory effects from adipose tissue. These changes raise vascular resistance and circulating volume, promoting higher blood pressure. The association between increasing BMI and rising hypertension prevalence in youth is robust, making obesity the most influential modifiable factor. Family history contributes to risk but with a smaller, less consistent effect compared to obesity. Low physical activity often accompanies higher BMI and can contribute to elevated blood pressure, but its independent impact is typically not as strong as that of adiposity. High salt intake can raise blood pressure, especially in salt-sensitive individuals, but in children its role is not as strong a predictor as BMI. In practice, addressing weight through lifestyle changes is a key strategy to reduce blood pressure and long-term cardiovascular risk in pediatric patients.

Elevated BMI is the strongest risk factor for primary hypertension in children and adolescents. Obesity increases blood pressure through multiple interrelated mechanisms: greater sympathetic nervous system activity, activation of the renin-angiotensin-aldosterone system, insulin resistance, endothelial dysfunction, and inflammatory effects from adipose tissue. These changes raise vascular resistance and circulating volume, promoting higher blood pressure. The association between increasing BMI and rising hypertension prevalence in youth is robust, making obesity the most influential modifiable factor.

Family history contributes to risk but with a smaller, less consistent effect compared to obesity. Low physical activity often accompanies higher BMI and can contribute to elevated blood pressure, but its independent impact is typically not as strong as that of adiposity. High salt intake can raise blood pressure, especially in salt-sensitive individuals, but in children its role is not as strong a predictor as BMI.

In practice, addressing weight through lifestyle changes is a key strategy to reduce blood pressure and long-term cardiovascular risk in pediatric patients.