Possible early warning signs (may appear days–weeks before)
1. Chest discomfort (angina)
- Pressure, tightness, heaviness in chest
- Often comes with activity or stress
2. Unusual fatigue
- Extreme tiredness with normal activities
- More common in women
3. Shortness of breath
- Breathing difficulty even with light activity or rest
4. Sleep disturbance
- Trouble sleeping or waking up breathless/anxious at night
5. Dizziness or lightheadedness
- Reduced blood flow or heart rhythm changes
6. Pain spreading to arm, jaw, neck, or back ⚠️
- Especially left arm or jaw pain
- This is one of the more important warning signs, but not unique to heart attack
7. Indigestion-like symptoms
- Nausea, burning chest, or stomach discomfort
- Often mistaken for acidity
⚠️ Important truth
- These symptoms are not guaranteed warnings
- Many people have them without ever having a heart attack
- Some people have no warning at all
🚨 Emergency heart attack signs (act immediately)
Call emergency services if there is:
- chest pain lasting >10 minutes
- sweating + chest pressure
- pain radiating to arm/jaw
- severe shortness of breath
- sudden collapse or weakness
🧠 Key takeaway
