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Though cardiovascular are common in the UK (about one in three adults has high blood pressure; nearly 60% of us have elevated levels of “bad” cholesterol), many common complaints have no symptoms.

High blood pressure has been called a “silent killer”, for instance, even though it can damage your arteries and heart over time.

Occasionally, though, our bodies can give us much-needed tells.

Those with a genetic high cholesterol condition called familial hypercholesterolaemia might notice a pale ring around the iris of their eye or small yellowish lumps on their........

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