But the body doesn’t work in isolated parts.
When arteries narrow due to plaque buildup — a condition medically known as atherosclerosis — circulation to the lower limbs can also be affected. In many cases, the first subtle warning signs appear in the feet and legs, especially at night.
Let’s unpack what that really means.
How Heart Blockage Affects the Legs
Heart blockage usually refers to narrowed coronary arteries.
However, plaque buildup is a systemic vascular problem. If arteries in the heart are affected, arteries in the legs may also narrow — a condition called peripheral artery disease (PAD).
Reduced blood flow means:
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Muscles receive less oxygen
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Nerves become irritated
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Tissue recovery slows
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Pain signals increase
At night, symptoms can feel more intense because the body is at rest and circulation naturally shifts.
