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Eating Egg Yolk Is Bad For Your Heart? Science Says The Opposite

Eating Egg Yolk Is Bad For Your Heart? Science Says The Opposite

Nutrition research suggests that eggs not only are a convenient source of nutrients but they can also play a pivotal role in weight management, muscle strength, healthy pregnancy, brain function, eye health, and more. In fact, according to a study done by the Egg Nutrition Center,[1] simply consuming one egg a day reduces the risk of stroke by as much 12 percent.

Egg Myth-Busting

Decades-old research has sustained and perpetuated the idea that eggs are bad and should be consumed sparingly if at all. This was largely because one large egg contains between 186 and 213 milligrams of cholesterol.[2] And all of the cholesterol is in the yolk.

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Scientists and health professionals have drilled into our brains that high blood cholesterol is the primary cause of heart disease. Cholesterol- in and of itself–is not bad.[3] It helps your body build new cells, insulate nerves, produce hormones, and make testosterone, which all in-turn help to increase energy and build muscle. Under normal circumstances, the liver produces all the cholesterol the body needs. However, cholesterol also enters your body from animal-based foods like milk, eggs, and meat. Too much cholesterol in your body can increase your risk for developing heart disease.[4] Since eggs are fairly high in cholesterol, it was assumed that eating them regularly–particularly the yolks–was a precursor to heart disease.

Today, researchers understand that cholesterol in food is not the true and sole culprit for heart disease. Studies have revealed that saturated and trans fats actually have a much greater effect on blood cholesterol. According to research conducted by Dr. Luc Djoussé, a heart disease researcher at Harvard Medical School, dietary cholesterol does not translate into high levels of blood cholesterol.[5]

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“Current scientific data do not justify worries about egg consumption, including egg yolk, when it comes to heart health,” he says.

Eggs–specifically the yolks–are good for your health

Egg yolks contain almost all the vitamins and minerals in the egg. There’s just no comparison. Most of the vitamins and minerals in an egg are lost if the yolk is discarded. The white of a large egg contains around 60 percent of the egg’s total protein. Additionally, fat and cholesterol in the egg yolk[6] contain fat-soluble nutrients like vitamins D, E, A, choline, and carotenoids,[7] which may aid the body in absorbing these essential and important nutritional components of eggs.

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Eggs also contain phospholipids which may affect cholesterol and inflammation levels in beneficial ways, help decrease blood pressure, and improve vascular function.[8] Preliminary research results have revealed that phospholipids may also help to protect against Alzheimer’s Disease,[9] although the results from these studies are still far from definitive.

In 2000, the American Heart Association (AHA) revised its dietary guidelines and gave healthy adults the green light to enjoy eggs once again. The AHA’s guidelines now allow healthy adults to consume an egg a day but still advise on keeping the total daily cholesterol limit to less than 300 mg.

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Best cooking methods to unlock eggs’ nutritional benefits

Applying heat to good food is a naturally destructive process. The chemistry of heating foods looks a lot like unwinding molecules. In vegetables, heat can break down cell walls to sometimes help make nutrients more accessible to your gut. In egg whites, the proteins become unwound, to become slightly more bio-available (which refers to the proportion of a nutrient that is absorbed from the diet and used for normal body functions). Or to put it simply, heating egg whites is generally beneficial. The yolks, however, should be prepared with as little heat as possible, because heat damages fats and the vital nutrients inside. 

Raw eggs are the most nutrient-rich way to consume eggs, however experts warn against this practice as raw eggs can contain Salmonella[10] and other harmful contaminates.

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Denise Hill

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Last Updated on February 21, 2019

12 Best Brain Foods That Improve Memory and Boost Brain Power

12 Best Brain Foods That Improve Memory and Boost Brain Power

Nutrition plays a vital role in brain function and staying sharp into the golden years. Personally, my husband is going through medical school, which is like a daily mental marathon. Like any good wife, I am always looking for things that will boost his memory fortitude so he does his best in school.

But you don’t have to be a med student to appreciate better brainiac brilliance. If you combine certain foods with good hydration, proper sleep and exercise, you may just rival Einstein and have a great memory in no time.

I’m going to reveal the list of foods coming out of the kitchen that can improve your memory and make you smarter.

Here are 12 best brain foods that improve memory:

1. Nuts

The American Journal of Epidemiology published a study linking higher intakes of vitamin E with the prevention on cognitive decline.[1]

Nuts like walnuts and almonds (along with other great foods like avocados) are a great source of vitamin E.

Cashews and sunflower seeds also contain an amino acid that reduces stress by boosting serotonin levels.

Walnuts even resemble the brain, just in case you forget the correlation, and are a great source of omega 3 fatty acids, which also improve your mental magnitude.

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2. Blueberries

Shown in studies at Tuffs University to benefit both short-term memory and coordination, blueberries pack quite a punch in a tiny blue package.[2]

When compared to other fruits and veggies, blueberries were found to have the highest amount of antioxidants (especially flavonoids), but strawberries, raspberries, and blackberries are also full of brain benefits.

3. Tomatoes

Tomatoes are packed full of the antioxidant lycopene, which has shown to help protect against free-radical damage most notably seen in dementia patients.

4. Broccoli

While all green veggies are important and rich in antioxidants and vitamin C, broccoli is a superfood even among these healthy choices.

Since your brain uses so much fuel (it’s only 3% of your body weight but uses up to 17% of your energy), it is more vulnerable to free-radical damage and antioxidants help eliminate this threat.

Broccoli is packed full of antioxidants, is well-known as a powerful cancer fighter and is also full of vitamin K, which is known to enhance cognitive function.

5. Foods Rich in Essential Fatty Acids

Your brain is the fattest organ (not counting the skin) in the human body, and is composed of 60% fat. That means that your brain needs essential fatty acids like DHA and EPA to repair and build up synapses associated with memory.

The body does not naturally produce essential fatty acids so we must get them in our diet.

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Eggs, flax, and oily fish like salmon, sardines, mackerel and herring are great natural sources of these powerful fatty acids. Eggs also contain choline, which is a necessary building block for the neurotransmitter acetylcholine, to help you recall information and concentrate.

6. Soy

Soy, along with many other whole foods mentioned here, are full of proteins that trigger neurotransmitters associated with memory.

Soy protein isolate is a concentrated form of the protein that can be found in powder, liquid, or supplement form.

Soy is valuable for improving memory and mental flexibility, so pour soy milk over your cereal and enjoy the benefits.

7. Dark chocolate

When it comes to chocolate, the darker the better. Try to aim for at least 70% cocoa. This yummy desert is rich in flavanol antioxidants which increase blood flow to the brain and shield brain cells from aging.

Take a look at this article if you want to know more benefits of dark chocolate:

15 Surprising and Science-Backed Health Effects of Dark Chocolate

8. Foods Rich in Vitamins: B vitamins, Folic Acid, Iron

Some great foods to obtain brain-boosting B vitamins, folic acid and iron are kale, chard, spinach and other dark leafy greens.

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B6, B12 and folic acid can reduce levels of homocysteine in the blood. Homocysteine increases are found in patients with cognitive impairment like Alzheimer’s, and high risk of stroke.

Studies showed when a group of elderly patients with mild cognitive impairment were given high doses of B6, B12, and folic acid, there was significant reduction in brain shrinkage compared to a similar placebo group.[3]

Other sources of B vitamins are liver, eggs, soybeans, lentils and green beans. Iron also helps accelerate brain function by carrying oxygen. If your brain doesn’t get enough oxygen, it can slow down and people can experience difficulty concentrating, diminished intellect, and a shorter attention span.

To get more iron in your diet, eat lean meats, beans, and iron-fortified cereals. Vitamin C helps in iron absorption, so don’t forget the fruits!

9. Foods Rich in Zinc

Zinc has constantly demonstrated its importance as a powerful nutrient in memory building and thinking. This mineral regulates communications between neurons and the hippocampus.

Zinc is deposited within nerve cells, with the highest concentrations found in the hippocampus, the part of the brain responsible for higher learning function and memory.

Some great sources of zinc are pumpkin seeds, liver, nuts, and peas.

10. Gingko biloba

This herb has been utilized for centuries in eastern culture and is best known for its memory boosting brawn.

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It can increase blood flow in the brain by dilating vessels, increasing oxygen supply and removing free radicals.

However, don’t expect results overnight: this may take a few weeks to build up in your system before you see improvements.

11. Green and black tea

Studies have shown that both green and black tea prevent the breakdown of acetylcholine—a key chemical involved in memory and lacking in Alzheimer’s patients.

Both teas appear to have the same affect on Alzheimer’s disease as many drugs utilized to combat the illness, but green tea wins out as its affects last a full week versus black tea which only lasts the day.

Find out more about green tea here:

11 Health Benefits of Green Tea (+ How to Drink It for Maximum Benefits)

12. Sage and Rosemary

Both of these powerful herbs have been shown to increase memory and mental clarity, and alleviate mental fatigue in studies.

Try to enjoy these savory herbs in your favorite dishes.

When it comes to mental magnitude, eating smart can really make you smarter. Try to implement more of these readily available nutrients and see just how brainy you can be!

More Resources About Boosting Brain Power

Featured photo credit: Pexels via pexels.com

Reference

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