Heart disease remains the leading cause of death in the United States — but the good news is that many heart attacks can be prevented.

While your body doesn’t give you a 30-day countdown, it can send subtle signals — sometimes weeks or even months in advance.

These signs are often overlooked or mistaken for aging, stress, or indigestion.

Let’s explore the real, science-backed early signs that your heart may be under strain — so you can take steps to protect it.

🔍 Common Early Signs That May Signal Heart Trouble

1. Unexplained Fatigue

Especially common in women

Feeling exhausted despite rest
Caused by reduced blood flow — the heart works harder
✅ If you’re constantly tired without reason, consider a heart check.

2. Shortness of Breath
Difficulty breathing during everyday activities (walking, climbing stairs)

May occur with or without chest pain
Happens when the heart can’t pump efficiently
✅ Don’t ignore breathlessness that comes on suddenly or worsens over time.

3. Chest Discomfort or Pressure
Not always sharp pain — can feel like fullness, pressure, or squeezing

Often comes during activity and goes away with rest
Frequently mistaken for heartburn
✅ Any recurring chest sensation deserves medical evaluation.

4. Pain in Other Areas
Discomfort may spread to:
Arms (especially left)
Neck
Jaw
Back
Caused by “referred pain” from the heart
✅ Unexplained pain in these areas — especially during exertion — should be taken seriously.

5. Dizziness or Lightheadedness
Can be a sign of irregular heart rhythm or poor blood flow

May happen with standing or activity
Often linked to low blood pressure or arrhythmias
✅ If you feel faint often, get it checked.

6. Swelling in Legs, Ankles, or Feet (Edema)
Fluid buildup due to poor circulation or heart failure

Worse at the end of the day
Can also indicate kidney or liver issues
✅ Persistent swelling + other symptoms = see a doctor.

7. Sleep Disturbances
Waking up gasping or short of breath (possible sleep apnea or heart strain)

Frequent nighttime urination (fluid shifts when lying down)
Restless sleep due to undiagnosed heart issues
✅ Poor sleep isn’t always stress — it could be a heart clue.