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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 50 min ago

Heart failure risk may be affected by weight gain

Fri, 07/21/2017 - 07:00
Researchers find that weight gain may overstrain the heart muscle, which, in time, could lead to heart failure. Weight management could reduce this risk.

A healthy heart today means a healthier brain later in life

Thu, 07/20/2017 - 07:00
Following seven simple heart health tips in your 20s predicts a healthier brain volume in your 40s. Cardiovascular and cognitive health seem to be linked.

Ozone exposure tied to cardiovascular risk

Tue, 07/18/2017 - 14:00
Exposure to ozone is linked to changes in blood platelets and raised blood pressure at levels lower than that tied to changes in the lungs, study shows.

Mitral valve prolapse: What you need to know

Tue, 07/18/2017 - 07:00
Mitral valve prolapse is a condition where a valve in the heart stops working normally. Learn what causes it, how it is diagnosed, and how it is treated.

Is there a link between A-fib and time spent working?

Fri, 07/14/2017 - 15:00
Large population study with participants from four European countries suggests that length of working hours is a strong factor in the development of A-fib.

Low doses of radiation could harm cardiovascular health, study suggests

Fri, 07/14/2017 - 07:00
Ionizing radiation, such as x-rays, has a harmful effect on the cardiovascular system even at doses equivalent to recurrent CT imaging, a new study published in the International Journal of Radiation...

Common chemicals in plastic linked to chronic disease

Fri, 07/14/2017 - 07:00
Chemicals found in many plastics, called phthalates, have once again been linked with a range of chronic conditions, including type 2 diabetes.

Coffee: The science behind the health claims

Thu, 07/13/2017 - 07:00
Coffee consumption has been linked to a range of health benefits, but there are risks for some coffee lovers. Find out what the latest research says.

Improving diet quality over time linked with reduced risk of premature death

Wed, 07/12/2017 - 21:00
People who improve the quality of their diets over time, eating more whole grains, vegetables, fruits, nuts, and fish and less red and processed meats and sugary beverages, may significantly reduce...

Iron deficiency may raise heart disease risk

Wed, 07/12/2017 - 16:00
New research examines the link between iron levels in the body and the risk of developing coronary artery disease. Iron may have a protective effect.

Everything you need to know about water retention

Wed, 07/12/2017 - 07:00
Find out all you need to know about water retention and what you can do to relieve this common health issue with home remedies or simple lifestyle changes.

Viagra may reduce blood clots after stent surgery

Tue, 07/11/2017 - 07:00
New research suggests stents coated with sildenafil may have a much lower chance of causing blood clotting or artery narrowing than other stents.

Heart palpitations: Causes, tests, and treatment

Sat, 07/08/2017 - 13:00
A heart palpitation means an awareness of the heartbeat that may not feel right, but what are the common causes and complications? Can it be prevented?

Vegetable pigment may reduce inflammation in heart disease patients

Fri, 07/07/2017 - 14:00
Higher levels of lutein, a pigment found in plants and eggs, correlates with lower levels of inflammation marker in patients with coronary artery disease.

Has effective medical therapy made the benefit of ICDs uncertain?

Fri, 07/07/2017 - 07:00
Medication, including beta-blockers, may be so effective in reducing the risk of sudden death in heart failure that the overall benefit of implantable cardioverter-defibrillators (ICDs) may be...

The 10 best heart disease blogs

Thu, 07/06/2017 - 15:00
Heart disease blogs are a useful source of information about the disease, with stories from people with the condition. We have found the 10 best blogs.

3-D-printed models could transform heart valve replacements

Tue, 07/04/2017 - 07:00
A study shows how 3-D-printed heart valve models can predict how well a prosthetic heart valve will fit a patient, which could lower their risk of leakage.

Can shingles raise the risk of heart attack?

Tue, 07/04/2017 - 07:00
The cardiovascular dangers of shingles are investigated in a new study, providing more evidence that the risk of stroke and heart attack is increased.

Beta-blockers may reverse genetic changes from heart disease

Mon, 07/03/2017 - 14:00
Researchers find that potentially damaging genetic changes linked to heart disease may be reversed with beta-blockers, a widely used class of heart drug.

Heavy breathing: Ten causes and treatments

Mon, 07/03/2017 - 10:00
Heavy breathing can have a range of possible causes. In this article, learn about heavy breathing, why it happens, and how it can be treated.