When is Stress Test actually useful?

The usefulness of a 'Stress Test' depends heavily on the context. In clinical medicine, a stress test typically refers to cardiac exercise testing (e.g., ECG under exertion) or an endocrine challenge test (e.g., ACTH stimulation for adrenal function). These are valuable when there is a specific suspicion of coronary artery disease, arrhythmias, or adrenal insufficiency. For asymptomatic individuals without risk factors, routine stress testing is not recommended due to high false-positive rates and potential for unnecessary follow-up. In the realm of consumer DNA tests, so-called 'stress genes' (e.g., COMT, BDNF) are sometimes marketed, but the evidence for actionable personalized stress management from such tests is weak. The provided context does not contain any specific information about stress tests. Therefore, a conservative answer is warranted: a stress test is truly useful only when ordered by a physician based on clinical indications. For general stress reduction, evidence-based lifestyle interventions remain the most effective approach.