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The cardiovascular system is comprised of the heart and the network of arteries, veins, and capillaries that carries blood throughout the body. The average adult male has between 5-6 liters of blood while the average adult female has 4-5 liters. Blood transports oxygen and essential nutrients to all of the living cells in the body, and also carries waste products from the tissues to the systems of the body through which they are removed.
Updated: 2 hours 44 min ago

Starting periods early linked to health risks later in life

11 hours 2 min ago
A study involving almost half a million people finds that a range of reproductive factors increase the risk of cardiovascular disease later in life.

What is torsades de pointes?

Mon, 01/15/2018 - 16:00
Torsades de pointes is an uncommon type of ventricular tachycardia that can be potentially life-threatening. Learn more about the causes and diagnosis.

Can a Western diet permanently alter the immune system?

Mon, 01/15/2018 - 15:00
Consuming a Western diet may prompt irreversible changes in the immune system that make it hyper-responsive to triggers of inflammation, says a new study.

What to know about cardiomegaly

Fri, 01/12/2018 - 11:00
A look at cardiomegaly, a condition where the heart is enlarged. Included is detail on types, causes, and the symptoms of which to be aware.

Heart failure risk might depend on your neighborhood

Tue, 01/09/2018 - 16:00
While diet and lifestyle are important factors in the risk of heart failure, new research finds that where we live may also play a key role.

The heart: Basics

Tue, 01/09/2018 - 08:00
In this article, we will outline the basic anatomy of the heart, the types of cells and tissues involved, and how your heartbeat is generated.

Heart failure risk could be reversed with exercise program

Mon, 01/08/2018 - 15:00
For middle-aged people, 2 years of high- and moderate-intensity exercise on 4 or 5 days per week can reduce heart failure risk from years of sitting.

Common anti-smoking drug may raise stroke, heart attack risk

Tue, 01/02/2018 - 08:00
Quitting smoking for 2018? Researchers urge caution if turning to medicinal help; a popular anti-smoking drug may raise the risk of cardiovascular events.

Restless legs syndrome may raise cardiovascular death risk

Wed, 12/27/2017 - 16:00
A new study finds that the common sleep disturbance raises the risk of cardiovascular-related mortality, particularly among elderly women.

Exposure to pollution counters benefits of exercise in seniors

Wed, 12/27/2017 - 08:00
As little as 2 hours spent walking in a polluted environment could cancel the positive health effects of exercise in older adults, says a new study.

Heart disease: Risk of death is higher for unmarried people

Wed, 12/20/2017 - 15:00
Heart disease patients who are widowed, divorced, separated, or never married face a higher risk of death than their married counterparts, new study finds.

All you need to know about varicose vein pain

Wed, 12/20/2017 - 08:00
A look at varicose vein pain, a condition where swollen veins become painful. Included is detail on prevention, potential causes, and when to see a doctor.

Is erectile dysfunction an early sign of CVD?

Mon, 12/18/2017 - 16:00
Men with erectile dysfunction should be assessed for CVD risk, say researchers, after finding that such men may have early markers of the condition.

What to know about jugular vein distention (JVD)

Sat, 12/16/2017 - 08:00
Jugular vein distention occurs when the pressure inside the vena cava increases and appears as a bulge running down the side of a person’s neck.

Ways to stop an AFib episode

Wed, 12/13/2017 - 08:00
A look at how to stop an atrial fibrillation (Afib) episode. Included is detail on the best ways to prevent an episode and when you should see a doctor.

Causes and remedies for low blood pressure during pregnancy

Tue, 12/12/2017 - 14:00
Low blood pressure, or hypotension, during pregnancy does not usually cause major health issues, and can be treated with at-home care. Learn more.

How a single bout of exercise instantly protects the heart

Sun, 12/10/2017 - 08:00
The phenomenon of 'ischemic preconditioning' helps to explain how an acute bout of exercise can have immediate protective effects against heart disease.

Eating cheese every day may help to protect heart health

Mon, 12/04/2017 - 17:00
Eating 40 grams of cheese every day could help to reduce the risk of heart disease and stroke, suggests a new observational study.

Acute kidney injury linked with heart failure

Fri, 12/01/2017 - 10:00
Acute kidney injury is a growing problem in the United States. According to the latest study, it may also increase the risk of heart failure.

Heart disease risk increased fivefold for bald and graying men

Thu, 11/30/2017 - 17:00
Young men under 40 years old may be more than five times more likely to develop coronary artery disease if they have male pattern baldness and gray hair.