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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 1 min ago

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.

What diseases affect the circulatory system?

Tue, 05/01/2018 - 12:00
The circulatory system includes the heart and blood vessels that carry blood and oxygen around the body. Some circulatory diseases, such as stroke, heart attacks, and aneurysms, are life -threatening and need emergency medical attention. Other diseases can be managed with medication and lifestyle change.

What do elevated cardiac enzyme levels mean?

Tue, 05/01/2018 - 00:00
When someone is having a heart attack, they will have raised cardiac enzymes, in addition to other symptoms. A cardiac enzyme test allows for a doctor to determine whether someone is having a heart attack and, if so, give them the most appropriate treatment. Learn more about cardiac enzymes and heart attacks here.

Do compression stockings help to treat varicose veins?

Sat, 04/28/2018 - 14:00
Doctors often recommend compression stockings to improve circulation, prevent varicose veins from becoming worse, and reduce pain and discomfort. They may be knee-high or thigh-high, and various types exert different pressures. We discuss the pros and cons of compression stockings. Learn to choose the right ones here.

Is saturated or unsaturated fat better for you?

Fri, 04/27/2018 - 18:00
Saturated and unsaturated fat are the two main forms of dietary fat. The health impact of these different types of fat has been debated for years. In this article, we examine the differences between these types, the foods that contain them, and whether or not one type of fat is more healthful than the other.

High blood pressure? Drinking kefir could lower it

Fri, 04/27/2018 - 15:00
Kefir, a fermented milk drink, is known for its probiotic properties that help to rebalance gut bacteria. But how can this influence blood pressure?

What could cause chest pain?

Fri, 04/27/2018 - 13:00
Pain in the chest may cause people to worry. Although some causes are severe, such as heart attacks, many of the potential causes are less worrisome. In this article, we examine 26 possible causes, including muscle injuries, asthma, and angina. We also look at when people should contact a doctor for treatment.

Why are my hands warm?

Tue, 04/24/2018 - 12:00
A person's hands may feel unusually warm for many reasons, ranging from recent exercise to medical conditions. In this article, we look at nine possible causes of warm hands, including high blood pressure and infection. Learn what accompanying symptoms can indicate an illness and when to consult a doctor here.

Heart failure: Destroying gut bacteria could improve outcomes

Tue, 04/24/2018 - 07:00
In a new study, researchers demonstrate that immune molecules activated by gut bacteria could negatively impact cardiac health following heart failure.

Ways to stop heart palpitations

Thu, 04/19/2018 - 07:00
Heart palpitations can feel like a fluttering in the chest, a pounding heart, or a racing pulse. Smoking, exercise, and stress can cause them, but if palpitations are the result of an underlying condition, treatment will be necessary. Here, learn how to stop heart palpitations at home and when to see a doctor.

How long can a person live with congestive heart failure?

Wed, 04/18/2018 - 19:00
Congestive heart failure is a progressive disease that causes the heart to weaken, making it difficult to pump blood around the body. In this article, we look at the symptoms, stages, and life expectancy of congestive heart failure. We also look at treatment options, including lifestyle changes and surgery.

Nut lovers rejoice: Your favorite snack protects your heart

Wed, 04/18/2018 - 07:00
Nuts are widely considered beneficial to the heart. A new study dives deeper into the specifics and finds out exactly what nuts can do for our tickers.

What are the signs of heart attack in a woman?

Tue, 04/17/2018 - 19:00
Symptoms of a heart attack can often vary between males and females. Being able to spot the early signs means that prompt treatment can be sought. There are also risk factors, such as lifestyle choices, that can be avoided, although some, such as age, genetics, or medical history, may not be avoidable. Learn more here.

How music helps the heart find its beat

Tue, 04/17/2018 - 16:00
A new study shows that listening to music can intensify the beneficial effects of hypertension medication in people with high blood pressure.

What is serum cholesterol?

Tue, 04/17/2018 - 10:00
Serum cholesterol is a measurement of high-density lipoprotein (HDL) cholesterol, which is considered good, low-density lipoprotein (LDL) cholesterol, which is considered bad, and triglycerides. A person's serum cholesterol level can help to determine whether they should change their diet or lifestyle. Learn more here.

Just one extra drink could take years off your life

Mon, 04/16/2018 - 07:00
The myth that moderate drinking is good for your heart takes a blow from this new study, which suggests the United States alcohol guidelines are too high.

What are diastole and systole in blood pressure?

Tue, 04/10/2018 - 07:00
A person’s blood pressure is measured by the balance between diastolic and systolic pressure in the heart. The current guidelines say that a normal range is under 120/80 mm Hg. Here, we discuss the difference between diastole and systole and the risks of hypertension (high) and hypotension (low) blood pressure.

How does depression affect people with cardiovascular disease?

Mon, 04/09/2018 - 16:00
A new study outlines the ways in which the risk or diagnosis of depression affects the health-related quality of life for people with cardiovascular disease.

There's no such thing as heart-protecting fat, study finds

Fri, 04/06/2018 - 07:00
Contrary to the belief that some fat protects the heart, a new study finds that losing fat in the thighs, hips, and buttocks lowers cardiovascular risk.

These vegetables may promote artery health

Thu, 04/05/2018 - 14:00
A study of older women finds that eating more vegetables — especially cruciferous ones — is tied to less thickening of carotid artery walls.