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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: 18 min 54 sec ago

Heart health: Are women getting incorrect treatment?

Mon, 01/20/2020 - 16:00
A new review investigates sex differences in cardiometabolic disorders. The authors conclude that women are more at risk of receiving the wrong treatment.

Best supplements for lowering blood pressure

Thu, 01/16/2020 - 18:00
Some people take dietary supplements to help reduce high blood pressure. Do these supplements work, and are they safe? Learn what the research says.

Study sets blood pressure target for people over 80

Wed, 01/15/2020 - 16:00
Newly published research sets a different standard for hypertension and what constitutes optimal systolic blood pressure for people aged 80 or older.

Marathon running may reverse a risky part of the aging process

Tue, 01/14/2020 - 17:00
The findings of a new study suggest that training for and running a marathon for the first time can 'turn back time' on a person's vascular age.

Stroke: Smoking both traditional and e-cigarettes may raise risk

Mon, 01/13/2020 - 17:00
A new study suggests young adults who smoke both conventional and e-cigarettes are nearly twice as likely to have a stroke as traditional smokers.

Cardiomyopathy: What to know

Fri, 01/10/2020 - 21:00
Cardiomyopathy is a disease that involves a weakened heart muscle. The condition makes it difficult for the heart to pump blood throughout the body. Read more here.

How does air pollution affect our health?

Fri, 01/10/2020 - 05:00
Air pollution surrounds people every day, both indoors and outdoors. Read about some common air pollutants and how they can affect a person’s health here.

What is water brash?

Thu, 01/09/2020 - 21:00
People with gastroesophageal reflux disease may experience a symptom called water brash. Read more about the causes and treatment of water brash here.

Wet coughs: What to know

Thu, 01/09/2020 - 20:00
A wet cough produces fluid or phlegm. In this article, learn about the various causes of a wet cough, as well as the treatment options available.

5 healthful living factors extend disease-free life

Thu, 01/09/2020 - 08:00
A new study concludes that a combination of five healthful living factors can extend the number of years an individual remains disease-free.

Chest pain and leg pain: Are they connected?

Wed, 01/08/2020 - 18:00
Although it is not typical for chest pain and leg pain to occur together, leg pain can be an indicator of a person’s heart health. Find out more here.

Is it bronchitis or pneumonia?

Tue, 01/07/2020 - 20:00
Bronchitis and pneumonia are two illnesses that people often confuse because they have many overlapping symptoms. Learn more about the differences here and when to see a doctor.

Common pesticide linked to increased mortality risk

Mon, 01/06/2020 - 17:00
A new study focuses on the long-term effects of exposure to a common pesticide. Its authors conclude that exposure to pyrethroids increases mortality risk.

Heart attack: New protein therapy may improve recovery

Fri, 01/03/2020 - 11:00
New research in pigs showcases a treatment that may help people recover after a heart attack. The therapy may succeed where previous methods have failed.

Cholesterol levels in young adults can predict heart disease risk

Sun, 12/29/2019 - 11:00
A new study investigates cholesterol levels across decades. It concludes that high levels in young adulthood can impact heart disease risk later in life.

High blood pressure research: 2019 overview

Fri, 12/27/2019 - 08:00
In this special feature, we outline some of 2019's most interesting investigations into hypertension. We cover risk factors, nutrition, and more.

2019 in medical research: What were the top findings?

Sat, 12/21/2019 - 08:00
Another year has come and gone, and we are about to step into a new decade. But what have the past 12 months meant for medical research?

What causes arm numbness?

Sat, 12/21/2019 - 05:00
Arm numbness has many possible causes, from sleeping on the arm and cutting off the circulation to serious issues, such as a stroke. Learn more about these and other causes here.

What causes chest pain on the left side?

Sat, 12/21/2019 - 04:00
Left-sided chest pain can be concerning. Learn how to tell the difference between a heart attack and other potential causes and symptoms.

Does your season of birth affect your mortality risk?

Fri, 12/20/2019 - 11:00
Studies have noted a link between our season of birth and overall mortality risk. A new study takes a fresh look, focusing on cardiovascular mortality.