What is considered the low normal systolic blood pressure for a 30-year-old?

• A. 60 mm Hg
• B. 70 mm Hg
• C. 80 mm Hg
• D. 90 mm Hg

Answer: (D)

In adults, typical normal systolic blood pressure ranges generally extend from about 90 mm Hg to 120 mm Hg. For a healthy 30-year-old individual, a systolic blood pressure below 90 mm Hg is often considered low, potentially indicative of hypotension. As a standard guideline, a systolic reading of 90 mm Hg is still within a low normal range, thereby representing the threshold where blood pressure is considered on the lower side of the scale.

While blood pressure can vary among individuals based on various factors such as fitness, genetics, and overall health, 90 mm Hg stands as a reasonable baseline for "low normal" systolic blood pressure. The other options, although lower, fall below this threshold and indicate a more concerning level of hypotension that may require further evaluation or intervention.