Plaque-Related Diseases: Why Asthma Is Not Caused by Arterial Plaque

Atherosclerotic plaque—lipid-laden deposits in arterial walls—drives cardiovascular diseases. Asthma, a chronic inflammatory airway disease, is not caused by arterial plaque.

Plaque-Driven Conditions

• Atherosclerosis: Diffuse arterial narrowing/stiffening.
• Coronary artery disease (CAD): Angina, MI, heart failure.
• Carotid artery disease: TIA, stroke.
• Peripheral artery disease (PAD): Claudication, critical limb ischemia.
• Aortic aneurysm: Plaque weakens media → dilation/rupture.
• Renal artery stenosis: Hypertension, renal failure.

Asthma Pathophysiology

• Type 2 inflammation (IL-4, IL-5, IL-13) → eosinophilic airway inflammation.
• Bronchial hyperresponsiveness, mucus hypersecretion, remodeling.
• Triggers: allergens, viruses, exercise, cold air, irritants.

Shared Risk Factors (Not Causation)

Smoking, obesity, hypertension, dyslipidemia, and physical inactivity increase risk for both atherosclerotic CVD and asthma severity. This association ≠ causation.

Clinical Implication

Patients with asthma should still be screened for CVD risk factors. Some asthma medications (LABA, oral steroids) may affect cardiovascular profile. Integrated care improves outcomes.