Low Blood Pressure

Low blood pressure (hypotension) is generally defined as a reading below 90/60 mmHg, though what counts as "too low" really depends on whether it's causing symptoms — some people naturally run at this level with no problems at all.

When It's Normal

Many healthy people, particularly those who are physically fit, naturally have blood pressure in this range without any symptoms or health concerns. In these cases, it's simply an individual variation, not a medical problem.

When It Needs Attention

Low blood pressure becomes a concern when it causes symptoms — our symptoms of low blood pressure guide covers what to watch for — or when it drops suddenly, which can indicate an underlying issue needing evaluation. A single low reading with no symptoms is usually confirmed with a repeat measurement rather than treated as meaningful on its own. A single low reading with no symptoms is usually confirmed with a repeat measurement rather than treated as meaningful on its own. A single low reading with no symptoms is usually confirmed with a repeat measurement rather than treated as meaningful on its own.

Common Causes

Dehydration, certain medications (including some blood pressure medications themselves, when a dose is too high), prolonged bed rest, pregnancy, and certain heart or endocrine conditions can all cause blood pressure to drop. Our causes of low blood pressure guide covers this in more depth.