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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: 1 hour 36 min ago

Higher cholesterol, egg consumption linked to heart disease

5 hours 22 min ago
Pooled data on 29,615 people spanning up to 31 years ties higher egg or cholesterol consumption to raised risk of cardiovascular disease and early death.

Common blood pressure drug may increase cardiac arrest risk

11 hours 22 min ago
A recent preliminary study concluded that a common drug that doctors prescribe to treat hypertension and angina may increase the risk of cardiac arrest.

CPR steps: A visual guide

Fri, 03/15/2019 - 18:00
Knowing the steps of CPR can help save a person's life. In this article, we look at CPR steps, including how to prepare, when to use it, and which techniques to use.

Heart failure: New drug could halt disease and improve heart function

Fri, 03/15/2019 - 16:00
A molecule that stops two proteins from interacting and impairing heart function halted heart failure and improved heart pumping capacity in rats.

What to know about mustard oil

Wed, 03/13/2019 - 18:00
Mustard oil may benefit the body by combatting inflammation and lowering the chance of cardiovascular disease. However, certain uses may not be safe. Learn more about the benefits and risks of mustard oil here.

Is high blood pressure always bad?

Wed, 03/13/2019 - 14:00
Most experts believe that doctors should treat hypertension as a risk factor. However, new research suggests that high blood pressure is not always bad.

Napping may be as good as drugs for lowering blood pressure

Wed, 03/13/2019 - 07:00
Researchers have now uncovered evidence that indulging in a midday nap can help control blood pressure levels about as well as taking medication.

What to know about heart pacemakers

Mon, 03/11/2019 - 18:00
A pacemaker keeps the heart beating regularly, and inserting one into the chest requires surgery. This is a relatively safe procedure. Learn more about heart pacemaker surgery here.

New drug limits damage to heart muscle from heart attack

Mon, 03/11/2019 - 16:00
Cell death from a heart attack damages heart muscle. Blocking MAP4K4 — a protein that is key to this process — greatly reduced heart injury in mice.

Vascular risk factors tied to brain health

Mon, 03/11/2019 - 14:00
New research finds that risk factors affecting the health of our blood vessels — such as smoking, obesity, or diabetes — may also impair brain health.

How yo-yo dieting impacts women's heart health

Sun, 03/10/2019 - 07:00
New research suggests that significant fluctuations in weight may negatively affect a woman’s ability to control her heart disease risk factors.

Why do doctors underdiagnose these 3 conditions in women?

Fri, 03/08/2019 - 17:00
Though medical systems have come very far, unequal care-giving remains an issue. In this Spotlight, we look at the top underdiagnosed conditions in women.

How TV and breakfast may impact heart health

Fri, 03/08/2019 - 15:00
Two new studies examine how different TV-watching and breakfast-eating patterns affect the cardiovascular health of 2,000 adults.

How does smoking affect the body?

Thu, 03/07/2019 - 20:00
Smoking cigarettes can affect the body in many ways, raising the risk of several serious health conditions. Learn more about the effects of smoking cigarettes in this article.

Being overweight or obese may improve stroke survival

Wed, 03/06/2019 - 08:00
New research further strengthens the theory that excessive body fat may have a protective effect and improve survival after a stroke.

Can mouthwash raise your blood pressure?

Tue, 03/05/2019 - 15:00
New research suggests that a substance commonly found in mouthwash destroys oral bacteria that help maintain normal blood pressure.

February 2019: Nutrition research highlights

Fri, 03/01/2019 - 17:00
In this Spotlight feature, we give you an overview of some of the most remarkable nutrition-related research published in February 2019.

What are the best dietary sources of vitamin D?

Thu, 02/28/2019 - 23:00
Vitamin D can improve bone, muscle, and immune system health. Foods with a high vitamin D content include oily fish, some mushrooms, and egg yolks. Learn more about the best dietary sources of vitamin D here.

What are the health benefits of water chestnuts?

Thu, 02/28/2019 - 14:00
Water chestnuts are tuber vegetables that grow underwater. They are low in calories and contain antioxidants, and they can be a healthful addition to a balanced diet.

Sleep apnea: Daytime sleepiness might help predict cardiovascular risk

Sat, 02/23/2019 - 11:00
A recent study finds that people with obstructive sleep apnea who experience the most daytime sleepiness have the highest risk of cardiovascular disease.

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