Stroke is the fourth leading cause of death in the UK and the leading cause of adult disability — yet it is also one of the most preventable of all major diseases. Time-critical recognition of stroke symptoms and evidence-based risk reduction could prevent thousands of deaths and hundreds of thousands of disability-years every year. This is genuinely life-saving knowledge.
FAST and BE-FAST: Recognising Stroke
FAST is the established UK public awareness tool: Face — has one side of the face drooped? Ask the person to smile. Arms — can they raise both arms and keep them there? Speech — is speech slurred, confused, or impossible? Time — call 999 immediately. An extended version, BE-FAST, adds two signs with particularly high sensitivity: Balance — sudden loss of balance or coordination; Eyes — sudden vision disturbance in one or both eyes. Other symptoms: sudden severe headache (“worst of my life” — thunderclap headache may indicate subarachnoid haemorrhage, a type of stroke); sudden confusion; sudden difficulty swallowing. Time is the critical variable — the benefit of thrombolysis (clot-busting) and thrombectomy (mechanical clot removal) diminishes rapidly with time. “Time is brain”: approximately 1.9 million neurons are lost every minute of untreated ischaemic stroke.
TIA: The Warning Stroke
A transient ischaemic attack (TIA) produces stroke symptoms that resolve completely within 24 hours (usually within minutes). TIA is a medical emergency — the short-term stroke risk after TIA is up to 10% in the first 48 hours. Anyone with TIA symptoms should seek emergency assessment immediately (999 or A&E, not “wait and see if it resolves”). Prompt assessment and treatment after TIA (antiplatelet therapy, blood pressure and cholesterol management, anticoagulation if AF is present) reduces subsequent stroke risk by 80%.
Stroke Risk Factors and What Reduces Them
Hypertension is the single most important modifiable risk factor — present in 60–70% of stroke patients. Every 10 mmHg reduction in systolic BP reduces stroke risk by approximately 27%. Atrial fibrillation — oral anticoagulation reduces AF-related stroke risk by 65%. Smoking — doubles stroke risk; risk returns to near-baseline within 5 years of cessation. Type 2 diabetes — tight glucose control reduces microvascular and macrovascular risk including stroke. Excessive alcohol — binge drinking in particular increases haemorrhagic stroke risk. Physical inactivity — regular exercise reduces stroke risk by approximately 25%. Obesity and dyslipidaemia — both independently addressable through lifestyle and medication.
Frequently Asked Questions About Stroke
What happens after a stroke in terms of recovery?
Recovery after stroke is highly variable and depends on the size and location of the affected brain area, the speed of treatment, and individual factors. Neuroplasticity — the brain’s capacity to reorganise — means significant recovery is possible even after substantial stroke. Most recovery occurs in the first 3–6 months, but improvement can continue for years with rehabilitation. The NHS provides stroke rehabilitation through multidisciplinary teams including physiotherapy, occupational therapy, speech and language therapy, and psychology.
Can aspirin prevent stroke?
Low-dose aspirin is appropriate for secondary prevention (after a stroke or TIA) but is no longer recommended for primary prevention in people without established cardiovascular disease — because the bleeding risk (GI bleeding, haemorrhagic stroke) outweighs the modest ischaemic stroke prevention benefit in the general population. After a stroke or TIA, antiplatelet therapy (aspirin, clopidogrel, or their combination) is prescribed by the medical team managing the patient.
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