Health

Cannabis use linked to increase in heart attack and stroke risk

An analysis of 430,000 adults in the U.S. found that using cannabis, most commonly through smoking, eating, or vaporizing it, was significantly associated with a higher risk of heart attack and stroke, even after controlling ...

Cardiology

Why Doesn't CPAP Reduce Heart Disease?

A study of people with obstructive sleep apnea suggests that high CPAP pressures may explain why the machines do not lower a patient's risk of heart disease, which is about two to three times higher than average.

Cardiology

Potential novel biomarkers of coronary heart disease discovered

Coronary heart disease (CHD) is one of the most common causes of death worldwide—especially in Europe: Here, it is responsible for nearly half of all deaths. Among middle-aged adults, individuals with type 2 diabetes (T2D) ...

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Coronary heart disease is the narrowing or blockage of the coronary arteries, usually caused by atherosclerosis. Atherosclerosis (sometimes called “hardening” or “clogging” of the arteries) is the buildup of cholesterol and fatty deposits (called plaques) on the inner walls of the arteries. These plaques can restrict blood flow to the heart muscle by physically clogging the artery or by causing abnormal artery tone and function.

Without an adequate blood supply, the heart becomes starved of oxygen and the vital nutrients it needs to work properly. This can cause chest pain called angina. If blood supply to a portion of the heart muscle is cut off entirely, or if the energy demands of the heart become much greater than its blood supply, a heart attack (injury to the heart muscle) may occur.

It is most commonly equated with atherosclerotic coronary artery disease, but coronary disease can be due to other causes, such as coronary vasospasm. It is possible for the stenosis to be caused by spasm.

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