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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 33 min ago

'Healthy obesity' not so healthy for the heart

Fri, 06/01/2018 - 10:00
Women with 'metabolically healthy obesity' won't have conditions such as diabetes. Even so, they may still face a heightened risk of cardiovascular events.

Is butter good or bad for cholesterol?

Thu, 05/31/2018 - 10:00
Many people believe that butter is bad for their cholesterol levels because it is high in cholesterol. However, some research suggests that dietary cholesterol does not directly cause high blood cholesterol. It is still best to limit butter in the diet as it contains lots of saturated fat. Learn more in this article.

What to know about non-fasting triglyceride tests

Wed, 05/30/2018 - 20:00
Triglyceride tests measure the levels of triglycerides in the blood. Concentrations of these fats or lipids in the blood increase after a meal, so fasting triglyceride tests are common. But non-fasting tests may be just as accurate and helpful. Learn more about triglycerides, what they do, and the tests for them here.

Heart health: Supplements don't work, with one exception

Tue, 05/29/2018 - 14:00
A new meta-analysis of existing studies finds that, with one exception, the most commonly used supplements do not protect against heart disease or stroke.

Is krill oil better than fish oil for omega-3?

Wed, 05/23/2018 - 16:00
Krill oil and fish oil are popular dietary supplements containing omega-3. Krill oil comes from a small crustacean while fish oil comes from oily fish, such as salmon. Both are shown to increase blood levels of omega-3 and have benefits for health. Learn more about the differences between krill oil and fish oil here.

Novel gel regrows brain tissue after stroke

Tue, 05/22/2018 - 15:00
In a first-of-its kind study, researchers show that a bioengineered gel can help brain tissue to regrow and restore function following a stroke.

One egg per day may keep stroke at bay

Tue, 05/22/2018 - 07:00
Eating eggs might lower your risk of stroke and heart disease. At least, this is what a new, large-scale study from China now suggests.

This 'natural antioxidant' may protect heart health

Mon, 05/21/2018 - 15:00
Bilirubin, a byproduct of red blood cell breakdown, may speak to cardiovascular health, researchers argue. Further studies should investigate mechanisms.

Increasing exercise over 6-year span protects the heart

Fri, 05/18/2018 - 14:00
In middle age, some people may be at risk of experiencing heart failure, a condition that often worsens in time. Can upping exercise levels prevent it?

Stroke: Clinical trial results 'likely to change care practice'

Fri, 05/18/2018 - 07:00
A large international clinical trial suggests that an anticoagulant and aspirin combination may be the way to go when it comes to preventing major stroke.

What are the best foods for heart health?

Wed, 05/16/2018 - 15:00
There are many ways to improve cardiac health, and watching what we eat is one of the most important. Here, we provide details of 16 heart-healthy foods.

What causes the heart to skip a beat?

Sun, 05/13/2018 - 18:00
While feeling like the heart has skipped a beat can be frightening, it is a common experience and not usually a cause for concern. In this article, learn why a person has heart palpitations. We explore the roles of anxiety, arrhythmias, medications, hormones, and lifestyle factors. We also discuss when to see a doctor.

Reversing atherosclerosis with one shot

Sun, 05/13/2018 - 07:00
Preliminary research in mice suggests that one day, it might be possible to reverse atherosclerosis in humans with a simple injection.

How to identify pitting edema

Sat, 05/12/2018 - 12:00
Edema refers to swelling caused by excess fluid. When swollen skin remains indented after being pressed, this is called pitting edema. It is most common in the legs, ankles, and feet. Several conditions and factors, such as pregnancy, can cause pitting edema. Learn how it is identified, treated, and prevented here.

How does exercise keep the heart young?

Fri, 05/11/2018 - 07:00
We know that exercise keeps the heart healthy, but how? New research concludes that exercise helps the heart to stay young by producing new heart cells.

How walnuts benefit your gut bacteria and overall health

Tue, 05/08/2018 - 15:00
New research explains the mechanisms behind the much-acclaimed health benefits of walnuts. The study bears great news for our cardiometabolic health.

Could saunas reduce stroke risk?

Thu, 05/03/2018 - 07:00
According to a recent study, taking regular saunas might reduce the risk of stroke. At last, something enjoyable seems to be good for us.

How true are these health myths?

Wed, 05/02/2018 - 15:00
Over time, a number of health myths have cropped up. Some of these are true, and some of them certainly aren't. Here, we debunk the most popular ones.

Both exercise and cold burn fat, but how?

Wed, 05/02/2018 - 07:00
A new study identifies a key molecule that may explain how exercise helps to burn fat, keeping cardiometabolic conditions such as diabetes at bay.

Types of heart attack: What you need to know

Tue, 05/01/2018 - 13:00
Some heart attacks are more severe than others. In this article, learn about the signs and symptoms of each type. We also explore their causes and who is at risk. Finally, we look at how each type is treated, the recovery process, and steps a person can take to prevent heart attacks and other cardiac problems.