Saturday February 22, 2020

Eating Fish Twice a Week Reduces the Risk of Heart Failure

Consuming fish which are high in Omega-3 fatty acids twice a week can help reduce the risk of heart failure, coronary heart disease, cardiac arrest and ischemic stroke, says a new scientific advisory from the American Heart Association.

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Based on the doses given in the study, humans should consume two to three servings of fish a week to have the same effect. Pixabay
Based on the doses given in the study, humans should consume two to three servings of fish a week to have the same effect. Pixabay

Consuming fish which are high in Omega-3 fatty acids twice a week can help reduce the risk of heart failure, coronary heart disease, cardiac arrest and ischemic stroke, says a new scientific advisory from the American Heart Association.

The Association recommends eating two 3.5-ounce servings of non-fried fish, or about three-fourth cup of flaked fish every week.

Emphasis should be placed on eating oily fish like salmon, mackerel, herring, lake trout, sardines or albacore tuna, which are all high in omega-3 fatty acids.

 

Representational image. Pixabay

 

“Scientific studies have established the beneficial effects of eating seafood rich in Omega-3 fatty acids, especially when it replaces less healthy foods such as meats that are high in artery-clogging saturated fat,” said Eric B. Rimm, Professor at the Harvard University’s T.H. Chan School of Public Health in Boston, US.

Further, the advisory, published in the journal Circulation, laid emphasis on eating fish such as shark, swordfish, tilefish, king mackerel, bigeye tuna, marlin and orange roughy that are high in mercury.

Even though mercury contamination has been linked with serious neurological problems in newborns, it does not have adverse effects on heart disease risk in adults, the advisory noted.

key to a healthy heart
Fish also contains Omega-3 fatty acids which help with depression. Pixabay

Moreover, the benefits of eating fish substantially outweighed any risks associated with mercury contamination, especially if a variety of seafood is consumed, it said.

According to a study, published in the journal Molecular Nutrition and Food Research, adding fatty fish to our diet increases the size and lipid composition of high-density lipoprotein (HDL) particles, also known as good cholesterol, in people with impaired glucose metabolism.

Also Read: According to Research, No Exercise For 6 Years Can Trigger Heart Failure Risk

Another study, published in the Journal of Nutritional Biochemistry, showed that Omega-3 fatty acids are more beneficial than flaxseed and other oils for preventing cancer. (IANS)

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Fat Around Arteries May Help Keep Blood Vessels Healthy: Study

Fat around arteries proven to be good for health as said by health researchers.

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Arteries
Fat around our arteries may play an important role in keeping those blood vessels healthy. (Representational Image). Pixabay

Researchers have found that fat around our arteries may play an important role in keeping those blood vessels healthy. This is a new health news.

The fat, known as perivascular adipose tissue, or PVAT, helps arteries do what scientists call “stress relax,” or let go of muscular tension while under constant strain.

This is similar to the bladder, which expands to accommodate more liquid while at the same time keeping it from spilling out.

“In our study, PVAT reduced the tension that blood vessels experience when stretched, and that’s a good thing, because the vessel then expends less energy. It’s not under as much stress,” said study researchers Stephanie Watts from Michigan State University in the US.

The findings, published in the journal Scientific Reports, could affect how researchers test for treatments related to plaque buildup in our arteries, or atherosclerosis, an issue that can often lead to a heart attack, which is currently a leading cause of death in the US.

What made the finding so exciting, Watts said, is that PVAT has largely been ignored by researchers who have thought its main job was to store lipids and do little more.

Arteries
The fat, known as perivascular adipose tissue, or PVAT, helps arteries do what scientists call “stress relax,” or let go of muscular tension while under constant strain. (Representational Image). Pixabay

Right now, scientists only divide blood vessels into three parts, the innermost layer called the tunica intima, the middle layer called the tunica media and the outermost layer called the tunica adventitia.

Watts would like scientists to recognise PVAT as the fourth layer, which others have called tunica adiposa – tunica means a membranous sheath enveloping or lining an organ and adiposa is a synonym for fat.

Other investigators have shown that PVAT plays a role in the functioning of blood vessels, finding that it secretes substances that can cause blood vessels to relax as well as substances that can cause it to contract.

But Watts and her colleagues wanted to test whether PVAT itself, rather than the substances it secretes, might play a role in how blood vessels perform. So, they decided to test whether PVAT provides a structural benefit to arteries by assisting the function of stress relaxation.

To do that, they tested the thoracic aorta in rats and found those with intact PVAT had more stress relaxation than those without. “My mind was blown,” Watts said when she saw that the pieces with surrounding fat had measurably relaxed more than those without.

Also Read- Here’s why You Should Start Drinking Tart Cherry Juice

The research team also tested other arteries and were able to duplicate the same response.

“So, this tells us, it’s not just a one off, it’s not something you see only in this particular vessel or this particular species or this particular strain. But that maybe it’s a general phenomenon,” Watts added. (IANS)