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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 37 min ago

Study finds variable accuracy of wrist-worn heart rate monitors

Fri, 10/14/2016 - 07:00
In a study published online by JAMA Cardiology, Marc Gillinov, M.D., of the Cleveland Clinic, and colleagues assessed the accuracy of 4 popular wrist-worn heart rate monitors under conditions of...

Much of the social inequality in heart disease risk among UK women is due to smoking, obesity and physical inactivity

Thu, 10/13/2016 - 12:00
Women with lower levels of education and living in more deprived areas of the UK are at greater risk of coronary heart disease, and this is largely due to smoking, obesity and physical inactivity...

Surgical procedure to fix aortic aneurysm associated with increased long-term mortality risk

Thu, 10/13/2016 - 12:00
A minimally-invasive procedure to fix a life-threatening condition may be associated with an increase in long-term complications, compared to an alternative procedure.

Smartphone app could be used to test for potentially fatal irregular heart rate

Thu, 10/13/2016 - 07:00
Method cheap and accessible; in two thirds of cases detected, there were no symptoms.

Calcium supplements may damage the heart

Wed, 10/12/2016 - 12:00
Experts recommend caution before taking calcium supplements.After analyzing 10 years of medical tests on more than 2,700 people in a federally funded heart disease study, researchers at Johns...

Sudden blood pressure drops associated with long-term dementia risk

Wed, 10/12/2016 - 07:00
Orthostatic hypotension - low blood pressure when suddenly standing up - is associated with a 15 percent increase in a person's long-term risk of dementia, including Alzheimer's disease, according...

Maternal chronic disease linked to higher rates of congenital heart disease in babies

Wed, 10/12/2016 - 07:00
Pregnant women with congenital heart defects or type 2 diabetes have a higher risk of giving birth to babies with severe congenital heart disease and should be monitored closely in the prenatal...

Big data analysis is "next frontier" in identifying harmful drug interactions

Wed, 10/12/2016 - 07:00
Coupling data mining of adverse event reports and electronic health records with targeted laboratory experiments, researchers found a way to identify and confirm previously unknown drug...

Stem cell therapy regenerates primate hearts

Tue, 10/11/2016 - 12:00
Cardiac muscle cells (cardiomyocytes) derived from the stem cells of one macaque can be used to regenerate the damaged hearts of other macaques, reports a Nature paper published online this week.

Emotional upset and heavy exertion may trigger a heart attack

Tue, 10/11/2016 - 12:00
Experiencing anger/emotional upset or heavy physical exertion appears to double heart attack risk.

Review suggests eating oats can lower cholesterol as measured by a variety of markers

Mon, 10/10/2016 - 15:00
Researchers have known for more than 50 years that eating oats can lower cholesterol levels and thus reduce a person's risk of developing cardiovascular disease.

Lowering systolic blood pressure to below 120 would save more than 100,000 lives per year

Thu, 10/06/2016 - 07:00
Intensive treatment to lower systolic (top number) blood pressure to below 120 would save more than 100,000 lives per year in the United States, according to a study led by Loyola University...

Use of therapeutic hypothermia associated with lower likelihood of survival following in-hospital cardiac arrest

Wed, 10/05/2016 - 07:00
In a study appearing in JAMA, Paul S. Chan, M.D., of Saint Luke's Mid America Heart Institute, Kansas City, and colleagues evaluated the association of hypothermia treatment with survival to...

Targeting cardiovascular disease risk factors may be important across a lifetime

Wed, 10/05/2016 - 07:00
New findings suggest that all adults, including those over 65, should be mindful of risk factors for cardiovascular disease.

World Heart Federation launches global 'Roadmap' to tackle atrial fibrillation - the most common form of irregular heartbeat

Tue, 10/04/2016 - 07:00
A new Roadmap to tackle Non-Valvular Atrial Fibrillation (AF), the most common and clinically significant form of cardiac arrhythmia, has been launched by the World Heart Federation (WHF).

Stroke vs. Heart Attack: How to Tell the Difference

Mon, 10/03/2016 - 07:00
Heart attacks and strokes share many similarities, but are very different life-threatening medical emergencies. Knowing the differences is crucial.

Randomized trial suggests eating bread made with ancient grains could benefit heart health

Mon, 10/03/2016 - 07:00
Randomized trial suggests eating bread made with ancient grains could help lower cholesterol and blood glucose.

Milk intake is objectively not linked to increased cardiovascular risk

Mon, 10/03/2016 - 07:00
Researchers in Valencia participated in an international study that has debunked the association between milk and dairy products and increased cardiovascular risk.

Exercise hormone sheds fat, 'helps people stay slender'

Sun, 10/02/2016 - 07:00
Scientists have found that the hormone irisin, which is released during exercise, may help the human body to shed fat and prevent fat from forming.