Your heart rate is more uneven than you think. This is what it says about your health
BBC • • general
Key Points:
- Heart rate variability (HRV), the micro-fluctuations in time between heartbeats, is emerging as a useful indicator of cardiovascular health, stress levels, exercise recovery, mental health, and potentially ageing.
- A higher HRV generally indicates a healthy nervous system capable of adapting between stress ("fight-or-flight") and relaxation ("rest-and-digest") states, while low HRV may signal chronic stress or underlying health issues.
- Research links low HRV to conditions such as anxiety, depression, PTSD, dementia, and schizophrenia, with some treatments improving HRV alongside mental health symptoms; however, studies vary in methods and device accuracy.
- Breathwork and mindful breathing exercises show promise in increasing HRV and alleviating mental health symptoms, though experts debate whether HRV should be a direct treatment target or simply a marker of overall health.
- HRV is best tracked over time using wearables to observe trends rather than single readings, helping individuals make informed lifestyle decisions; however, traditional health metrics like heart rate, blood pressure, and cholesterol remain essential for most adults.
