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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: 56 min 54 sec ago

How an omega-6 fatty acid may keep heart disease at bay

Sat, 07/20/2019 - 07:00
New research in mouse cells sheds light on some mechanisms that help explain how dihomo-gamma-linolenic acid, an omega-6, prevents atherosclerosis.

What causes a pulse in the stomach?

Thu, 07/18/2019 - 21:00
Feeling a pulse in the stomach, or abdomen, is not a cause for concern in some people. However, in others, it may indicate an aortic aneurysm. Learn more about the causes, risk factors, and symptoms here.

Higher iron levels may protect arteries but raise clot risk

Thu, 07/18/2019 - 16:00
A new study links naturally higher iron levels to a reduced risk of clogged arteries but a raised risk of clots related to the slowing of blood flow.

Air pollution may raise atherosclerosis, heart disease death risk

Tue, 07/16/2019 - 07:00
New findings suggest that 'atherosclerosis is a pathological pathway through which air pollution' raises the risk of death from heart disease.

Why even slim people may benefit from calorie restriction

Mon, 07/15/2019 - 10:00
New research reveals the cardiometabolic benefits that a small reduction in calorie intake can have on people who are not overweight or obese.

High blood pressure: Could gut bacteria play a role?

Sun, 07/14/2019 - 07:00
Over recent years, researchers have investigated the potential role of gut bacteria in hypertension. Although evidence is mounting, questions remain.

Top 13 high potassium foods

Fri, 07/12/2019 - 06:00
Potassium is a nutrient that is key to good heart health. In this article, learn about the best high potassium foods that people can eat.

Are there any health benefits to a cold shower?

Fri, 07/12/2019 - 04:00
The potential health benefits of taking a cold shower include strengthening the immune system, feeling invigorated, and boosting mood. Learn more about the benefits of taking a cold shower here.

How many calories do eggs contain?

Wed, 07/10/2019 - 18:00
Eggs are rich in protein, calcium, and potassium, among other vital nutrients. In this article, learn how many calories an egg contains, as well as the risks and benefits of eating eggs.

These diets and supplements may not really protect the heart

Tue, 07/09/2019 - 07:00
Do common dietary interventions and nutritional supplements really help protect against cardiovascular events? A new meta-analysis answers in the negative.

Could targeting this heart hormone help control blood pressure?

Mon, 07/08/2019 - 16:00
The heart releases a hormone that has a key role in blood pressure. Now, a study of rats shows that its function depends on a sugar molecule attachment.

Very low levels of 'bad' cholesterol may raise stroke risk

Thu, 07/04/2019 - 14:00
New research in a large sample of participants finds that too little low-density lipoprotein cholesterol correlates with a higher risk of bleeding stroke.

Cardiovascular risk linked not to weight, but to body fat storage

Mon, 07/01/2019 - 14:00
Research in a large cohort of women over the age of 50 suggests that body shape, resulting from fat distribution, is associated with cardiovascular risk.

What are some slow-release carbs?

Thu, 06/27/2019 - 22:00
Slow-release carbs include quinoa, vegetables, and white bread alternatives. They provide a gradual supply of energy for the body. Learn more about slow-release carb foods and the Glycemic index (GI) here.

Sitting at home or at work: Which is worse for heart health?

Thu, 06/27/2019 - 10:00
New research in an African American cohort suggests that not all types of sedentary behavior are equally risky for cardiovascular health.

Statins may double the risk of type 2 diabetes

Wed, 06/26/2019 - 11:00
New research examines the risk of receiving a type 2 diabetes diagnosis among those who are taking statins to lower their cholesterol.

Hypertension: Looking beyond the classic risk factors

Wed, 06/26/2019 - 07:00
In a recent study, scientists have investigated the impact of the environment where we live on the risk of developing hypertension and metabolic syndrome.

What causes shortness of breath when lying down?

Mon, 06/24/2019 - 21:00
Some potential causes of shortness of breath when lying down include heart failure, obesity, and emphysema. Learn more about the causes of shortness of breath when lying down here, along with their treatment options.

How calcium in coronary arteries can predict future heart health

Sun, 06/23/2019 - 10:00
According to a recent study, higher levels of calcium in the coronary artery could put middle-aged and black people at risk of serious heart problems.

What to know about cardiac muscle tissue

Fri, 06/21/2019 - 04:00
Cardiac muscle tissue exists only in the heart. Here, it is responsible for keeping the heart pumping and relaxing normally. Conditions that affect this tissue can affect the heart’s ability to pump blood around the body. Doing aerobic exercise can help keep cardiac muscle tissue strong and healthy. Learn more here.