Before the plaque actually burst, 8 out of 10 had bleeding inside them — meaning bleeding happens before the cap breaks, and might be a warning sign.

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Evidence from Studies

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Th17 cells and IL-17 are involved in the disruption of vulnerable plaques triggered by short-term combination stimulation in apolipoprotein E-knockout mice

Cohort Study

Animal

2013 Jul

This study found that plaques broke open after a short burst of stress, not that they bled inside without breaking — so it doesn’t back up the claim about bleeding being an early warning sign before rupture.

Source Study

Th17 cells and IL-17 are involved in the disruption of vulnerable plaques triggered by short-term combination stimulation in apolipoprotein E-knockout mice

Score: 17

DOI: 10.1038/cmi.2013.4

Similar Assertions

Even though the mice had fatty plaques and they burst, their blood fat levels didn’t change — meaning the rupture wasn’t caused by worse cholesterol, but by something else, like immune activity.

72%

In mice with fatty artery buildup, a quick burst of stress (like cold, a toxin, and a blood pressure drug) caused 3 out of 4 fragile plaques to burst, but only if the plaque was already weak — strong plaques didn’t break.

71%

Over time, the strong fibrous cap covering the fatty core in the artery got much thinner compared to the size of the fatty core — making the plaque more likely to burst, like a weak roof over a big hole.

70%