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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: 20 min 36 sec ago

What an exotic fish can do for human heart health

Wed, 11/21/2018 - 15:00
A species of exotic freshwater fish has the ability to heal its own heart following heart injury. Researchers are trying to understand the mechanism.

Strength training tied to better heart health than aerobic

Mon, 11/19/2018 - 17:00
Training with weights has a greater effect on reducing heart risks than running or cycling, according to recent research presented at a conference.

Blood pressure medications: Everything you need to know

Mon, 11/19/2018 - 12:00
Blood pressure medications help prevent many serious complications, such as stroke and heart disease. Learn about the types and possible side effects in this article.

What causes lightheadedness?

Fri, 11/16/2018 - 19:00
People who experience lightheadedness feel dizzy or faint. This sensation is particularly common after standing up too quickly. Learn about the other possible causes and treatment options in this article.

What is lupus?

Fri, 11/16/2018 - 08:00
Lupus is a complex and potentially serious autoimmune condition. It has a variety of symptoms and can affect different parts of the body. It is difficult to diagnose, but new scientific discoveries are making early diagnosis easier. Treatment can provide effective ways to manage symptoms and improve quality of life.

What are the treatments for obesity?

Fri, 11/16/2018 - 08:00
Treatments for obesity include lifestyle remedies, such as dietary changes and exercise. If these do not work, medication or surgery may be possible. Find out more about the options available.

Heart attacks increasingly common in young women

Tue, 11/13/2018 - 16:00
New research, presented at the American Heart Association's Scientific Sessions meeting, finds that heart attacks are no longer an 'old man's disease.'

What are the best fish to eat for health?

Mon, 11/12/2018 - 20:00
Some types of fish can be a good source of high-quality protein and other nutrients. Some of the best fish to eat include wild-caught salmon, mackerel, herring, and sardines. Larger fish may contain mercury so people should consume them in moderation. Learn more about the best fish to eat and how to prepare them here.

Vitamin D, fish oil supplements of little benefit to heart health

Mon, 11/12/2018 - 15:00
Two large new clinical trials have examined the benefits of vitamin D and fish oil supplements for staving off heart disease and cancer.

Chronic noise can impact heart health

Mon, 11/12/2018 - 08:00
New research has investigated the impact of noise on health, and regular exposure to excessive noise appears to increase cardiovascular risk.

Could blue light reduce blood pressure?

Sun, 11/11/2018 - 11:00
According to recent findings, exposing the body to blue light could lower high blood pressure as effectively as taking hypertension medication.

7 benefits of rooibos tea

Fri, 11/09/2018 - 16:00
Rooibos tea is a delicious alternative to green or black tea. It is naturally caffeine-free and has many other potential health benefits. Learn about them here.

Heart attack: Some risk factors affect women more

Thu, 11/08/2018 - 15:00
According to a new study, certain risk factors for heart attack affect women more than they do men, and this excess risk persists regardless of age.

Broken heart syndrome: How complications affect death risk

Thu, 11/08/2018 - 11:00
New research has examined the effect of cardiogenic shock on long- and short-term mortality risk among people with broken heart syndrome.

A natural pigment can help decrease cardiovascular risk

Wed, 11/07/2018 - 11:00
A new systematic review finds that a common natural pigment could significantly lower the risk of heart disease and death related to cardiovascular events.

Mediterranean diet: New evidence of its heart-healthy benefits

Tue, 11/06/2018 - 15:00
New research in rodents has tested the cardioprotective benefits of a compound triggered by consuming vegetables, fish, and seafood.

What hookah smoking can do to your blood vessels

Tue, 11/06/2018 - 11:00
New research suggests that hookah smoking, much like cigarette smoking, impacts blood vessel functions that are critical for cardiovascular health.

Can this Amazonian diet offer a solution to heart disease?

Tue, 11/06/2018 - 08:00
One indigenous population from the Bolivian Amazon may have a lesson or two to teach us about how diet and lifestyle can protect heart health.

Daily serving of nuts may stave off weight gain

Mon, 11/05/2018 - 16:00
Two new studies suggest that a daily serving of nuts helps stave off weight gain in the long run and benefits cardiometabolic health in women.

It may only take one energy drink to harm your blood vessels

Mon, 11/05/2018 - 15:00
Experts worry that energy drinks may impair health, particularly cardiovascular function. They warn that even one energy drink may harm the blood vessels.