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Articles By doctors healthpress
Do Free-range Hens Lay Better Eggs?
Submitted as: David Juan
The evidence increasingly shows that the best health advice for a morning meal is to include a few eggs.
They are rich in nutrients, lower in cholesterol than previously thought, and help keep you satiated longer into the day.
A new study addressed an interesting question: are eggs laid by free-range hens nutritionally superior to those laid by eggs in cages?
Free-range eggs are generally perceived to be better for you.
There is no doubt they are ethically the better option, and perhaps that is all that needs to be addressed.
But since we deal with science here in Doctors Health Press, we'll see if this natural food is actually clinically superior in nutrient base.
To that end, the new study found basically no difference in quality of eggs produced by hens in both environments.
What's more is that cholesterol levels in all eggs were lower than U.S. officials had documented.
This prompted the government to review and lower its estimates for average cholesterol levels in eggs.
The main message here is that an egg, no matter where it's produced, is a very nutritious food choice.
Free-range eggs did have higher levels of total fat than eggs produced by caged hens, but they did not have higher levels of cholesterol.
The researchers say that the most striking finding was that both cage- and range-produced eggs actually have lower cholesterol levels than previously believed.
This in turn led the United States Department of Agriculture to lower the cholesterol guidelines for eggs to 185 milligrams per egg, down from 213 mg.
In the study, egg samples were collected at 50, 62, and 74 weeks of age during the productive life of the flock and sent to four different laboratories.
The results showed no influence of housing environment (range or cage) on levels of vitamin A or vitamin E.
But, levels of beta-carotene were higher in the range eggs, which could be why their yolks are darker.
This important carotenoid is very healthy, and is transformed into vitamin A in the body.
Though there was more beta-carotene, the researchers concluded that overall there was no significant nutritional advantage of eggs produced by chickens given free range versus those in cages.
All this said, if you support the more ethical treatment of animals, then the choice may be clear anyway. Free-range eggs just might cost an extra dollar.
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The evidence increasingly shows that the best health advice for a morning meal is to include a few eggs.
They are rich in nutrients, lower in cholesterol than previously thought, and help keep you satiated longer into the day.
A new study addressed an interesting question: are eggs laid by free-range hens nutritionally superior to those laid by eggs in cages?
Free-range eggs are generally perceived to be better for you.
There is no doubt they are ethically the better option, and perhaps that is all that needs to be addressed.
But since we deal with science here in Doctors Health Press, we'll see if this natural food is actually clinically superior in nutrient base.
To that end, the new study found basically no difference in quality of eggs produced by hens in both environments.
What's more is that cholesterol levels in all eggs were lower than U.S. officials had documented.
This prompted the government to review and lower its estimates for average cholesterol levels in eggs.
The main message here is that an egg, no matter where it's produced, is a very nutritious food choice.
Free-range eggs did have higher levels of total fat than eggs produced by caged hens, but they did not have higher levels of cholesterol.
The researchers say that the most striking finding was that both cage- and range-produced eggs actually have lower cholesterol levels than previously believed.
This in turn led the United States Department of Agriculture to lower the cholesterol guidelines for eggs to 185 milligrams per egg, down from 213 mg.
In the study, egg samples were collected at 50, 62, and 74 weeks of age during the productive life of the flock and sent to four different laboratories.
The results showed no influence of housing environment (range or cage) on levels of vitamin A or vitamin E.
But, levels of beta-carotene were higher in the range eggs, which could be why their yolks are darker.
This important carotenoid is very healthy, and is transformed into vitamin A in the body.
Though there was more beta-carotene, the researchers concluded that overall there was no significant nutritional advantage of eggs produced by chickens given free range versus those in cages.
All this said, if you support the more ethical treatment of animals, then the choice may be clear anyway. Free-range eggs just might cost an extra dollar.
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Eat This To Keep Muscles, Lose Belly Fat
Submitted as: Dr. Victor Marchione
Food cures come, food cures go, but one that always floats around a healthy diet is the dairy family.
Our natural health is boosted by low-fat dairy products such as milk and yogurt.
A new study says if you wish to trim belly fat and increase lean muscle, you might consider dairy more strongly.
Specifically, a study found that a higher-protein, lower-carbohydrate energy-restricted diet has a major positive impact on body composition.
And that is especially so when the proteins come from dairy products.
The study, published now in the “Journal of Nutrition,” compared three groups of overweight and obese premenopausal women.
Each consumed either low, medium or high amounts of dairy foods coupled with higher or lower amounts of protein and carbohydrates.
They also exercised every day for four months.
The routine included five days of aerobic exercise and two days of circuit weightlifting.
Both groups shed identical amounts of weight — but the higher-protein, high-dairy group experienced greater whole-body fat and abdomen fat losses, greater lean mass gains, and greater increases in strength. The fat composition of the lost weight has, the researchers say, huge gains for long-term health.
All the weight dropped in the dairy group was fat. Meanwhile, the women gained muscle mass.
This translates into a major change in body composition.
Even preserving muscles is very important for maintaining metabolic rate and preventing weight regain.
The study found that the lower-protein, low-dairy group lost about a pound and a half of muscle.
But the lower-protein, medium-dairy group lost almost no muscle.
And then, in the higher-protein, high-dairy group, there was a gain of a pound and a half of muscle.
Plus, that group dropped twice as much belly fat as the lower-protein, low-dairy group.
These results are pretty big, as abdominal fat is particularly bad for health.
This study seems to show that boosting calcium and protein in the diet may help to further promote loss of fat from the worst storage area in the body.
What's more: the women got stronger and fitter through the exercise.
One note to consider when you analyze a study is any organizations or companies that may have funded it.
In this case, the major dairy organizations of both Canada and the U.S. were funders. That said, results remain results.
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Cloves Strengthen The Immune System
Submitted as: Dr. Victor Marchione
Your immune system is very complex. It has a set of
pathways that allow your body to respond to foreign
invaders such as bacteria, viruses, and other infectious
agents, as well as foreign material such as pollen. It's an
amazingly powerful alternative cure for disease. Your
immune system consists of a bunch of different types of
cells, each of which have a specific task assigned to them in
the defense of your body.
Basically, your immune system is divided into two main
parts: "humoral immunity" and "cell-mediated immunity."
So what's the difference? Humoral immunity deals with
infectious agents in your blood and body tissues. Cell-
mediated immunity, on the other hand, deals with body
cells that have been infected. In general, the humoral
system is managed by B-cells (with help from T-cells), and
the cell-mediated system is managed by T-cells. Together,
these two systems can help protect you from just about
anything -- in fact, they take on this task every single day
of your life.
What's one way to boost your humoral immunity? This is
the system that protects your blood and tissues after all, and
it deserves a little help to do its very important job. Try
adding cloves to your diet. Researchers have recently found
that clove oil could significantly increase your humoral
immune response.
Researchers at the Department of Pharmacology,
University College of Medical Sciences, in Delhi, India
conducted a trial involving the essential oil of clove. They
tested the effect of the oil on red blood cells and found it
caused a significant increase in the primary as well as
secondary humoral immune response.
It's not difficult to add some cloves to your diet. The spice
is popular and is often used to add a sweet and aromatic
taste to pumpkin pie, muffins, cookies, and breads. Cloves
are also added to many entrees.
Clove contains significant amounts of an active ingredient
called "eugenol." This ingredient has been the subject of
numerous health studies, including studies on the
prevention of toxicity from environmental pollutants like
carbon tetrachloride, digestive tract cancers, and joint
inflammation.
Cloves are an excellent source of manganese, a very good
source of dietary fiber, vitamin C, and omega-3 fatty acids,
and a good source of calcium and magnesium -- all things
that can boost your nutritional health. Cloves can also act
as a digestive aid.
When using clove oil, keep in mind that the oil is very
strong and can cause irritation if used in its pure form. Get
your doctor's advice before applying clove oil topically.
You can dilute the clove oil in olive oil or distilled water
before applying topically. Remember that it is not
recommended that you take clove oil internally -- use the
ground spice instead.
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Feeding Your Eyes
Submitted as: Dr. Victor Marchione
Even if you believe that there is nothing that needs to be done to help your vision, eating nutritious foods is going to benefit the rest of your body. The truth is, of course, that your eyes are very complex organs that need a daily dose of vitamins and minerals to function properly.
Adding a few eye-healthy foods to your diet is really not a difficult thing to do. All of the foods that are listed in the next few paragraphs are delicious and easy to find at your local grocery store. By adding these foods to your diet, you should see improvements in your eye health, which is all the motivation that you should really need. So here's a list of ten different foods that will help protect one of your most precious assets: your sight.
1. Apricots
Apricots are great for your eyes because they are rich in both beta-carotene and “lycopene”—two “phytochemicals” that research tells us promote good vision. Beta-carotene is changed by your body into vitamin A—an important antioxidant when it comes to eye health. Vitamin A can help resist “oxidative stress” damage to the lenses of your eyes, helping prevent cataracts and “macular degeneration.”
2. Collard Greens
Like all leafy green vegetables, collards are high in a “carotenoid” called “lutein.” Eating foods that are rich in carotenoids, particularly lutein and “zeaxanthin,” is associated with a reduced risk of developing age-related macular degeneration.
3. Zucchini
Zucchini is another food that is rich in lutein and zeaxanthin. Lutein and zeaxanthin help your eyes by protecting the central retina (also known as the macula) from blue and ultraviolet light. Consumption of zeaxanthin, with lutein, has been found in studies to reduce the chances of developing cataracts.
4. Broccoli
Broccoli and broccoli sprouts have been found to protect the retinas from damaging “free radicals.” There is a compound in broccoli called “sulphoraphane” that studies have shown naturally boosts your body's defense system against free radicals.
5. Eggs
Eggs are high in both “cysteine” and sulfur. These two substances are components of “glutathione”—a protein that acts as an antioxidant for the lenses of your eyes. Sulfur-containing compounds have been found in studies to protect against cataract formation. Egg yolks also contain lutein, and diets that are high in lutein lead to s reduced risk of developing age-related macular degeneration.
6. Garlic & Onions
Garlic and onions both contain lots of sulfur. Like eggs, the sulfurs in garlic and onions are important for the production of glutathione. Boosting glutathione levels could be a significant factor in both the prevention and the resolution of visual problems like macular degeneration, glaucoma or cataracts.
7. Tomatoes
Tomatoes contain two eye-healthy nutrients called lycopene and lutein. Both of these phytochemicals are carotenoids. You may have heard about lycopene's abilities when it comes to cancer protection, but its antioxidant capabilities could also help protect your eyes from sun damage.
8. Carrots
The saying that carrots are good for the eyes is not just an old wives' tale. Carrots are rich in beta-carotene, which is a precursor to vitamin A—a necessary nutrient for vision. Carrots are also rich in lycopene—a phytonutrient with antioxidant-protective power against UVB radiation. Carrots also contain lutein—a protective phytonutrient that is found in high concentrations in the macula, which protects it from free-radical damage.
9. Blueberries
Eating blueberries may help reduce the amount of eye fatigue that you experience. Blueberries contain the eye-healthy carotenoids lutein and zeaxanthin. Blueberries also contain “anthocyanins.” Anthocyanins are eye-nourishing phytonutrients that have been shown to improve night vision. They also contain the “flavonoids” “rutin,” “resveratrol” and “quercitin,” which may help prevent the onset of macular degeneration. Last but not least, blueberries contain both selenium and zinc—two minerals that are necessary for proper vision.
10. Fatty Fish
You'll want to add some cold-water fish to your diet, too. Salmon, tuna, cod, haddock and sardines are all rich in healthy omega-3 oils. Fish are especially high in two substances called EPA and DHA. These two omega-3 fats are important for cellular health. In fact, DHA makes up 30% of the fatty acids that are found in your retinas.
E-Bonus
Two Berries That Protect Your Brain
Blackcurrants are high in vitamin C and “gamma-lineolic acid” (GLA) (a rare fatty acid that is difficult to find in foods). The GLA is found in the seeds. Concentrated blackcurrant is an effective “monamine oxidase inhibitor.” Don't worry about the name; the important thing to know is that concentrated blackcurrant can act as a natural anti-depressant. Researchers have found that these berries protect brain cells against stress—specifically, the kind that causes Alzheimer's disease. Blackcurrants may be able to prevent or delay the onset of this devastating disease.
Not many people include boysenberries in their weekly diets. Like blackcurrants, boysenberries are not readily available, but they are also excellent sources of “anthocyanins” and “polyphenols.” Scientists and nutritionists have found that the darker the berry, the more potent these compounds tend to be. Polyphenols have been found in studies to protect the brain from damage.
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Vitamin D & Aging Bones
Submitted as: Dr. Victor Marchione
Unfortunately, this comes at the expense of the rest of their bodies.
Exercise is very important to the health of your vital organs and your immune system, among other things. Many women find themselves stuck in a vicious circle of wanting to “keep safe” and needing exercise for good health.
Well, a study out of Perth, Australia, suggests that there's help for women who find themselves in this predicament. According to the study, elderly women can significantly reduce their risk of falling by supplementing with vitamin D2.
The study involved 302 women aged 70 to 90. All of the women had a previous history of falling. The researchers specifically selected women who had blood-vitamin-D levels that were below average for the area. The women were divided into two groups, with half receiving 1,000 international units (IU) of vitamin D2 daily, while the other half acted as a control group.
After 12 months, 53% of the women in the vitamin-D2 group fell at least once compared to 63% in the control group. Vitamin-D supplementation lowered the risk of at least one fall by 19%.
The same amount of vitamin D plus calcium was associated with a 23% reduction of the risk of falling in winter or spring.1
The researchers added that although vitamin D2 reduced the risk of experiencing one fall, it did not appear to have the same beneficial effect when it came to multiple falls. Lead researcher Dr. Richard L. Prince suggested that this may be because elderly people who fall frequently are likely to have more risk factors for falling, such as a disability or poor physical health.
Could Reduce Risk of MS
Vitamin D isn't just good for preventing falls—it may help protect against Multiple Sclerosis (MS), too. MS is a disorder of the central nervous system. When you have the condition, your brain and spinal cord are affected.
Normally, nerve cells are surrounded by an insulating layer called “myelin.” Myelin is a fatty substance that helps transmit nerve impulses. When you have MS, the myelin sheath is inflamed or damaged. This slows or completely disrupts the transmission of nerve impulses, leaving areas of scarring called “sclerosis.”
When the nerve signals are disrupted, you could experience a number of symptoms, the most common of which are blurred or double vision, tingling in the limbs, loss of balance and coordination and tremors. MS attacks typically come and go in episodes, with relapses alternating with remissions.
Diet is thought to play a key role in the development of MS. Medical researchers point to the fact that MS is fairly common in the U.S. and Europe and almost unheard of in countries such as Japan, Korea and China. The average U.S. diet is high in saturated fats, cholesterol and alcohol. According to the researchers, these and other nutritional “bad guys” lead to the production of something called “prostaglandin 2” (PG2), which is a hormone-like substance that promotes an inflammatory response. In turn, inflammation worsens the symptoms of MS.
By contrast, in Asian countries, people typically consume much less fat than their American counterparts. Their diets tend to be high in foods that contain omega-3s and other essential fatty acids. Omega-3s are known to prevent inflammation.
Deficiency Linked to MS
Vitamin-D deficiency has also been linked to an increased risk for the symptoms of MS. In a clinical trial that was performed at the Harvard Medical School in Boston, MA, researchers examined whether levels of vitamin D were associated with the risk of contracting MS.
The researchers did a massive data review of more than 7.0 million U.S. military personnel who had blood samples stored in the Department of Defense Serum Repository. MS cases were identified through Army and Navy databases from the years 1992 through 2004. The researchers matched each of the 257 cases to two controls. Vitamin-D status was then evaluated by reviewing serum samples that were collected before the date of initial MS symptoms.
The research group found that among whites, the risk of MS significantly decreased with increasing levels of vitamin D. The researchers concluded that higher levels of vitamin D were associated with a lower risk of MS.2
Many people with MS have been statistically found to have poor diets prior to the onset of the disease. Allergies to gluten and dairy have been suspected of playing a role in the progression of MS too.
Whatever the real cause of MS is, it is obviously important to eat a healthy, balanced diet and to avoid harmful chemicals and pollutants as much as possible. This is especially true if you have a family member who is already suffering from the condition.
Get Vitamin D from the Sun
Sunlight helps your body produce vitamin D. Vitamin D helps you maintain normal blood levels of calcium and phosphorus. Without good levels of vitamin D, you can't absorb calcium, which is needed to form and maintain strong bones.
Benefits Sun Greater Than Risks
Scientists at the Institute for Cancer Research in Oslo, Norway, have found that the health benefits from sun exposure are far greater than the risks. According to a new study, modest sun exposure gives enormous vitamin-D benefits.
Researchers looked at sun exposure and vitamin-D levels in peoples from different latitudes. They calculated that given the same amount of time spent outside, those living near the equator in Australia produced 3.4 times more vitamin D than people in Britain did. They produced 4.8 times more than those in Scandinavia.
The researchers used these percentages to determine that people in sunnier latitudes were less likely to die from cancer—even though cancer rates actually climb from north to south.3
To cite an example of how the numbers work, lead researcher Johan Moan put it this way: In Norway, it is estimated that doubling the sun exposure for the general population would also double the number of annual skin-cancer deaths to about 300. However—and here's the important part—3,000 fewer people would die from other cancers. “The benefits could be significant for people in other countries as well,” Moan said. In fact, he would be quite surprised if they were different.
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Getting An “a” On Your Health Report Card
Submitted as: Dr. Victor Marchione
Chances are, if you're like most Americans, you'll find a lot of “Cs” on your report card, and that's a shame, because in a country such as the U.S ,where nutritious food and opportunities to exercise are readily available, many aren't doing what they can to stay healthy.
According to a recent study, Americans score about a C-minus when it comes to health and well-being. A research team collected data on more than 15,000 people aged 40 to 74. Of these, 7,340 had participated in the 1988 to 1994 National Health and Nutrition Examination Survey, and 7,811 had participated in the same survey for the years 2001 to 2006 prior to this recent study.
In the 18 years between the studies, the number of obese people increased from 28% to 36%, and the number of people who exercised 12 times a month or more dropped from 53% to 43%. The number of people who ate five or more servings of fruits and vegetables daily decreased from 42% to 26%. Smoking rates remained about the same.
Not Eating Fruits & Veggies
Overall, the number of people practicing healthy habits dropped from 15% in 1988 to eight percent in 2006. According to the researchers, Americans are not eating their fruits and veggies, are exercising less and are more obese than they were18 years ago.4
The research team concluded that it's time to get back to basics. Relying on pills to maintain health and prevent disease is probably not the best way to go. Pills are not as effective as living a healthy lifestyle is. Many other clinical trials support the conclusion that a very short list of lifestyle behaviors can influence the number of years you live—and the quality of those years.
Following a healthy diet, participating in physical activity and avoiding tobacco use are the three behaviors that are most likely to get you an “A” on your health report card.
This was large clinical trial, spanning almost two decades. The results are conclusive: take ownership of your health and do what you can to protect the quality and length of your life.
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Following A Rotation Diet Could Help Ease Ibs Symptoms
Submitted as: Dr. Victor Marchione
Irritable bowel syndrome (IBS) is a general term for a variety of inflammatory disorders of the intestinal tract.
Normally, the muscular contractions of your digestive tract are coordinated and regular.
IBS can disrupt this coordination and cause painful symptoms.
The difficulty with IBS, besides pain and discomfort, is that it can cause
havoc with your nutritional health.
IBS can be pretty serious.
Scientists are unsure what causes the disease and how exactly to treat it.
Sometimes medications are prescribed, but these treatments can cause
prescription side effects.
Now here's some GOOD health
news on the IBS front: a recent study has found that
following a simple rotation diet could help to reduce
painful symptoms.
Researchers at the University of Kansas Medical Center set
out to investigate the role of food intolerance in IBS
patients.
They enrolled 20 people who had failed standard
IBS medical therapies at a gastrointestinal clinic.
The patients underwent food elimination diets based on the
results of food- and mold-sensitivity tests.
Probiotics were also introduced. Repeat testing was performed at six
months.
The research team followed up with the patients
one year after trial completion to assess any beneficial
effects from the rotation diet.
They found that there were significant improvements in
stool frequency and IBS symptom scores.
Imbalances of beneficial flora were identified in 100% of the patients at
the outset of the study.
However, there was a significant
improvement in beneficial flora after treating with the
rotation diet.
The one-year follow-up showed minimal
symptomatic problems from IBS and a significantly
improved perception of control over IBS.
The researchers concluded that identifying and appropriately addressing
food sensitivities in IBS patients not previously responding
to standard therapy results in a sustained clinical response
and impacts positively on overall well-being and quality of
life.
How do you follow a rotation diet? Don't know if you have
any food sensitivities?
A rotation diet is simply a diet in which you eat a certain food (or food group) on a particular
day and then do not eat that food again for four days.
Record the condition of your health once you eliminate this
food.
Over the course of the four days, is it better, the same,
or worse?
After four days, add the food back into your diet.
Record your symptoms again.
Do you notice that any
symptoms are worse? If so, you may have a sensitivity to
this food that is aggravating, or perhaps even causing, some
of your health problems.
It can take some time to identify trigger foods using the
rotation diet.
But be patient -- discovering a food that is
causing you to feel awful in some way is worth the effort.
You may find that your symptoms clear up remarkably
quickly by taking the simple step of eliminating a particular
food from your diet.
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The Amazing, Historic, Powerful Green Tea
Submitted as: David Juan
Green tea is one of the most healthful beverages on the
planet. It is a constant topic of medical studies around the
world. It is ancient and its chemical properties make it
potentially helpful in a range of conditions. This begins a
multi-part article in which I examine how the ancient
beverage helps battle many conditions, including cancer.
Tea drinking started in China about 5,000 years ago.
Legend has it that tea was discovered by a Chinese emperor
at this time when leaves from a bush nearby blew into his
boiling water. Long ago, Traditional Chinese Medicine
recommended tea for healthy individuals trying to prevent
various diseases. During the Tang dynasty (618-907 AD),
tea drinking as well as tea trade flourished in Asia.
True teas all come from the "Camellia sinensis" shrub.
Once the leaves are plucked from the tree, the way they are
processed determines what kinds of tea we get. Black teas
are crushed and then exposed to oxygen before they are
dried, whereas green teas are non-fermented. Oolong teas
are "partially fermented." All teas contain a group of
chemicals known as "polyphenols" and are especially high
in flavonoids. However, the types and amounts will depend
on the way the teas are processed.
In green tea, the major polyphenol belongs to the family
known as "catechins." It also contains many other
beneficial chemicals: caffeine; gallic acid; theophylline;
theobromine; theaflavins; and theanine.
More than one million Americans are diagnosed with
cancer each year. Another 500,000 die of cancer each year.
In Asia, drinking green tea and eating soy are linked to a
lower cancer rate and fewer deaths. What green tea really
does in terms of preventing cancer is culled from mostly
large population surveys -- also known as epidemiological
studies. In parts two, three and four of this series, I'll
examine specific cancers with respect to green tea.
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Omega-3s Stifle Stroke Damage
Submitted as: Dr. Victor Marchione
A new study has found that omega-3 fatty acids, one of the
most healthful substances to humans, may limit the damage
from a stroke. This fatty acid, found within many fish, was
discovered to reduce the severity of brain damage after a
stroke.
This bit of health news comes courtesy of Laval University
in Quebec, Canada, from information gleaned from mice.
It showed that the extent of brain damage following
a stroke was reduced by 25% in mice that consumed
docosahexaenoic acid (a potent form of omega-3s), or
DHA, daily. It was published online in the journal "Stroke."
Researchers observed that the effects of stroke were less
severe in mice that had been fed a diet rich in DHA for
three months than in mice fed a control diet. In mice from
the DHA group, they saw a reduction in the concentrations
of molecules that trigger inflammation. Conversely,
they saw a larger quantity of molecules that prevent the
activation of cell death.
The researchers call this the "first convincing
demonstration" of how powerful DHA is in protecting the
brain from inflammation. Basically, DHA partially replaces
arachidonic acid, an omega-6 fatty acid known to actually
increase inflammation.
Eating omega-3s creates an anti-inflammatory and brain-
protective environment that mitigates damage following a
stroke. And the researchers believe this effect is likely the
same in humans. They conclude: "Since DHA is readily
available, inexpensive, and reduces the risk of a number of
health problems without causing significant side effects, the
risk-benefit ratio tends to favor the regular consumption of
fish or DHA."
Just another big score for fish mongers everywhere.
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How To Prevent Kidney Stones From Forming
Submitted as: Cate Stevenson, BA
Kidney stones are an increasingly common health problem in Canada and the U.S. 10 tips for preventing the formation of kidney stones.(read
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