How Excess Fat Impacts Your Cardiovascular Health

Excessive dietary fat—especially saturated and trans fats—drives multiple cardiovascular risk pathways.

Major Mechanisms

1. Atherosclerosis: LDL cholesterol infiltrates arterial intima → oxidation → foam cells → plaque → stenosis → myocardial infarction/stroke.
2. Hypertension: Endothelial dysfunction → reduced nitric oxide → vasoconstriction, arterial stiffness.
3. Insulin resistance / Type 2 diabetes: Ectopic fat (liver, muscle) impairs insulin signaling → hyperglycemia → vascular damage.
4. Stroke: Accelerated carotid/intracranial atherosclerosis + hypercoagulability → ischemic stroke.
5. Peripheral artery disease (PAD): Lower-extremity atherosclerosis → claudication, critical limb ischemia, amputation risk.
6. Heart failure: Obesity cardiomyopathy (lipotoxicity, diastolic dysfunction) + hypertension + coronary disease → HFpEF/HFrEF.

Protective Dietary Patterns

• Mediterranean diet (olive oil, nuts, fish, plants).
• DASH diet (low sodium, high potassium).
• Replace saturated/trans fats with unsaturated (omega-3, MUFA).

Lifestyle modification remains the cornerstone of cardiovascular risk reduction.