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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: 33 min 35 sec ago

Red meat allergy may increase heart disease risk

Fri, 06/15/2018 - 14:00
According to a new study, red meat allergies may increase the risk of heart disease, even in people who only have minor reactions to the allergen.

Stable angina: Everything you need to know

Fri, 06/15/2018 - 11:00
Stable angina causes pain, squeezing, or tightness in the chest, usually when someone is stressed or doing physical activity. Narrowed arteries or blockages can reduce the blood flow to the heart, causing stable angina. Here, learn more about the symptoms, as well as the difference between stable and unstable angina.

24-hour Holter monitoring: What to know

Fri, 06/15/2018 - 11:00
A Holter monitor is a medical device that can help to diagnose heart problems, such as arrhythmias. A technician will attach electrodes to a person’s chest, and the person will wear the monitor for 24 hours. In this article, learn what to expect, how to wear the monitor properly, and what results mean.

A supple aorta might slow brain aging

Thu, 06/14/2018 - 16:00
Researchers investigate the role of arterial stiffness in memory decline in older adults. A flexible aorta may be key to maintaining cognitive ability.

Coronary artery spasm: What to know

Thu, 06/14/2018 - 11:00
Coronary artery spasm may cause pain, burning, or tightness in the chest, but it is often asymptomatic. While coronary artery spasms sometimes go unnoticed and do not cause significant problems, they can sometimes be life-threatening. In this article, learn more about the symptoms, risk factors, and how to treat it.

Even slightly elevated blood pressure increases dementia risk

Wed, 06/13/2018 - 10:00
Hypertension in middle age is known to increase the risk of dementia, but so far the specifics are unclear. A new study sheds fresh light on this matter.

Heart disease: Erectile dysfunction may double risk

Tue, 06/12/2018 - 07:00
Erectile dysfunction can put men at risk of developing a range of heart problems, such as heart attack and sudden cardiac death, shows a new study.

Can mangoes protect heart and gut health?

Mon, 06/11/2018 - 14:00
A small-scale study has found that consuming mango regularly might improve cardiovascular health and have a positive effect on gut bacteria.

What causes chest pain that comes and goes?

Mon, 06/11/2018 - 10:00
Chest pain can have many origins, including problems with the heart, muscles, and lungs. When this pain comes and goes, a person may suspect a problem with the heart. In this article, we explore possible causes of intermittent chest pain, how to tell when the problem is heart-related, and when to call a doctor.

Nutrition 2018: New data confirm health benefits of plant-based diet

Mon, 06/11/2018 - 07:00
A raft of new studies presented at the recent Nutrition 2018 conference sing the praises of a vegetable-based diet. The evidence keeps on mounting up.

What happens if you fast for a day?

Fri, 06/08/2018 - 11:00
What happens if you don't eat for a day? While most people will feel hungry and possibly tired, there is also a range of other effects. In this article, learn about how the body starts to burn fat for energy and whether fasting for 24 hours can be a good weight loss tool. We also investigate the possible risks.

What are the benefits of blackberries?

Thu, 06/07/2018 - 10:00
The blackberry is rich in vitamin C, fiber, and antioxidants, and people can add them to their diet easily with some simple changes to their daily eating habits. Learn more about the health benefits of blackberries here, the potential side effects, and how to add them to your diet here.

How does cheese affect cholesterol levels?

Wed, 06/06/2018 - 12:00
Most types of cheese are high in cholesterol and saturated fat. Studies provide conflicting information about the relationship between cheese and blood cholesterol levels. Here, learn more about how cheese may affect a person's cholesterol levels, and which types of cheese are best for a person with high cholesterol.

Job strain could be harming your heart

Tue, 06/05/2018 - 16:00
A study has found that job strain — defined as doing highly demanding work but having low control over it — is tied to higher risk for atrial fibrillation.

These four foods are proven to lower your cholesterol

Tue, 06/05/2018 - 14:00
A new analysis shows that the so-called Portfolio diet — which consists of four main food components — reduces cholesterol and cardiovascular risk.

Atherosclerosis: Could there be a best time of day for medication?

Mon, 06/04/2018 - 16:00
New research finds that the biological processes of atherosclerosis vary according to time of day and may have implications for timing of medication.

Is there a link between GERD and fatigue?

Mon, 06/04/2018 - 12:00
Many people with gastroesophageal reflux disease (GERD) experience fatigue because of the ways that the disease's symptoms impact sleep. In this article, we explore the link between fatigue and GERD in depth. Learn how the two issues are related, when to see a doctor, and what strategies and treatments can help.

The faster you walk, the longer you may live

Mon, 06/04/2018 - 07:00
A habit of walking supports health on numerous levels, but does walking pace influence these benefits? A new study suggests that it may.

Green tea compound may protect heart health

Sat, 06/02/2018 - 10:00
Some of the claims about green tea lack scientific backing. However, one compound found in the popular drink may help to protect against atherosclerosis.

Vegetarian diet reduces heart disease death risk by 40 percent

Fri, 06/01/2018 - 14:00
A recent review examines plant-based diets and heart health. It concludes that vegetarian and vegan diets significantly improve cardiovascular health.