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Your Practical Guide to Omega-3 Benefits and Supplementation

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By Dr. Mercola

Omega-3 in SalmonTime and again, I have emphasized that omega-3 fats are essential to your overall health. And I am not alone – other health experts stress the same, and decades of research have been devoted to discovering the many health benefits of omega-3. Omega-3 comes from both animal and plant sources, most notably from krill oil and fish oil. They have become a multibillion-dollar business, with Americans spending about 2.6 billion dollars on nutritional supplements and foods fortified with omega-3 fats.1

Get the lowdown on omega-3 – its different types and sources, the omega-3 and omega-6 balance you should strive to achieve, and how to know if you are getting the highest-quality omega-3 fats for the wealth of health gains.

Types of Omega-3 Fats

Omega-3 fats are acquired from both animal and plant sources, but there is a lot of confusion when it comes to what type you should take to get the best omega-3 benefits.

Marine animals such as fish and krill provide eicosapentaenoic acid (EPA) anddocosahexaenoic acid (DHA), which are mostly promoted for their protective effects on your heart. Flaxseed, chia, hemp, and a few other foods, on the other hand, offeralpha-linoleic acid (ALA). 2

You would want to choose an animal-based variety – most of the health benefits linked to omega-3 fats are linked to the animal-based EPA and DHA, not the plant-based ALA.

Furthermore, ALA is converted into EPA and DHA in your body at a very low ratio. What this means is that even if you consume large amounts of ALA, your body can only convert a relatively small amount into EPA and DHA, and only when there are sufficient enzymes.

Remember, though, that plant-based omega-3 fats are NOT inherently harmful or should be avoided. Ideally, what you want to do is include an animal-based form in your diet. For instance, you can combine flax and hemp in your diet with animal-based omega-3s.

A Rundown of Omega-3 Benefits

Omega-3 ranks among the most important essential nutrients out there today.3 In 2008, the American Journal of Clinical Nutrition4, 5, 6 published three studies investigating the role of EPA and DHA omega-3 fatty acids in elderly populations.

Low concentrations of EPA and DHA resulted in an increased risk of death from all causes, as well as accelerated cognitive decline. The studies also suggest that a higher intake of omega-3s may bring certain health benefits that short-term supplementation cannot give.

Here are other evidence of omega-3 benefits:

    1. Omega-3 benefits your heart health. An Italian study (GISSI)7 of 11,324 heart attack survivors found that patients supplementing with fish oils markedly reduced their risk of another heart attack, stroke, or death. In a separate study, 8 American medical researchers reported that men who consumed fish once or more every week had a 50 percent lower risk of dying from a sudden cardiac event than do men who eat fish less than once a month.
    2. Omega-3 normalizes and regulates your cholesterol triglyceride levels.Compared to a statin, both fish oil and krill oil are more efficient in doing this. According to a study comparing the efficiency of krill and fish oils in reducing triglyceride levels,9 both oils notably reduced the enzyme activity that causes the liver to metabolize fat, but krill had a more pronounced effects, reducing liver triglycerides significantly more.

Fasting triglyceride levels are a powerful indication of your ability to have healthy lipid profiles, which can be indicative of your heart health.

Studies have also shown that omega-3 fats are anti-arrhythmic (preventing or counteracting cardiac arrhythmia), anti-thrombotic (prevents thrombosis or a blood clot within a blood vessel), anti-atherosclerotic (preventing fatty deposits and fibrosis of the inner layer of your arteries), and anti-inflammatory (counteracting inflammation – the heat, pain, swelling, etc).

    1. DHA affects your child’s learning and behavior. Do you want to maximize your child’s intellectual potential? A study published in Plos One in June 201310 linked low levels of DHA with poorer reading, and memory and behavioral problems in healthy school-age children. In another study published in the American Journal of Clinical Nutrition in August 2013,11 children who consumed an omega-3 fat supplement as infants scored higher on rule learning, vocabulary, and intelligent testing at ages 3 to 5.

Previous research also found that children with attention deficit hyperactivity disorder (ADHD) and related behavior or learning disabilities are more likely to have low omega-3 fat levels.

Omega-3 has such great impact on your brain health – EPA and DHA keep the dopamine levels in your brain high, increase neuronal growth in the frontal cortex of your brain, and increase cerebral circulation.

    1. Omega-3 has been found to save the lives of children going through short bowel syndrome (SBS), which is uncommon but impacts thousands of people in the United States. SBS can occur from birth (when a portion of the intestine fails to develop) or due to an infectious inflammatory disease striking premature newborns. In adults, it can be caused by surgery for Crohn’s disease or injury.

Alarmed by the situation, Dr. Mark Puder, surgeon at Children’s Hospital Boston,12 said that they knew most of the children with SBS were going to die. Then the physicians noted that when the kids were given the nutritional supplement Omegaven (made of fish oil), they began to improve drastically.

The fish oil treatment was given to 112 children at the hospital, where more than 90 percent of the children with SBS are still alive. There has been striking results that the fish oil supplement is also made available at 70 hospitals worldwide.

Omega-3 benefits cover many areas of health, from mental and behavioral health to preventing premature death from disease, including the following:

Coronary heart disease and stroke Essential fatty acid deficiency in infancy (retinal and brain development) General brain function, including memory and Parkinson’s disease
ADHD Autoimmune disorders, e.g. lupus and nephropathy Osteoporosis
Crohn’s disease Cancers of the breast, colon, and prostate Rheumatoid arthritis

You May Be Running Low on These Beneficial Fats

Omega-3 Deficiency Affects the HeartMost people fail to consume sufficient amounts of omega-3 fats, which makesomega-3 deficiency likely the sixth biggest killer of Americans. This deficiency can cause or contribute to serious mental and physical health problems, and may be a significant underlying factor of up to 96,000 premature deaths each year.

In fact, dietary fat intake has been among the most widely studied dietary risk factors for breast and prostate cancers. Two studies from 2002 explain how omega-3 can protect against breast cancer. BRCA1 (breast cancer gene 1) and BRCA2 (breast cancer gene 2) are two tumor suppressor genes that, when functioning normally, help repair DNA damage, a process that also prevents tumor development.

Omega-3 and omega-6 fats have been found to influence these two genes – omega-3 tends to reduce cancer cell growth, while highly processed and toxic omega-6 has been found to cause cancer growth.

Considering that omega-3 deficiency is a common underlying factor for cancer and heart disease, it is no longer surprising for statistics to show that this deficiency may be responsible for nearly 100,000 deaths every year.

Special attention should also be given to the fact that most women have major deficiencies of omega-3. A 1991 study at the Mayo Clinic focused on 19 “normal” pregnant women consuming “normal diets,” and it showed that all were deficient in omega-3 fats. Another study compared Inuit (Eskimo) women to Canadian women, and it revealed omega-3 deficiency in the milk of the Canadian nursing moms.

Animal cells cannot form omega-3, so a fetus must obtain all of its omega-3 fatty acids from its mother’s diet. A mother’s dietary intake and plasma concentrations of DHA directly influence the DHA level of the developing fetus, impacting the child’s brain and eye health.

So remember that if you are pregnant, your baby is dependent on the omega-3 from your diet via breast milk. It is then crucial that you maintain adequate omega-3 supply.

The Omega-3-Omega-6 Balance You Should Maintain in Your Body

omega 3 capletsOmega-3 and omega-6 are two types of fat that are essential for human health. However, the typical American consumes far too many omega-6 fats in her diet while consuming very low omega-3 levels.

The ideal ratio of omega-6 to omega-3 fats is 1:1. Our forefathers evolved over millions of years on this ratio. Today, however, our ratio averages from 20:1 to 50:1 – this spells serous dangers to your well-being! In fact, mainstream media has finally reported that lack of omega-3 is among the most serious and pressing health issues plaguing our world.Omega-6 is primarily sourced from corn, soy, canola, safflower, and sunflower oils. These are overabundant in the typical diet, which accounts for excess omega-6 levels.

Omega-6 fats predominate the diet in the US, and this encourages the production ofinflammation in your body. Many scientists believe that one reason there is a high incidence of heart disease, hypertension, diabetes, obesity, premature aging, and some cancer forms today is this profound omega-3-omega-6 imbalance.

Sources of Animal-Based Omega-3 Fats

Perhaps you are wondering what animal-based omega-3 options are available for you. Here are the primary ones:

    • Fish – In a perfect world, fish can provide you all the omega-3s you need. Unfortunately, the vast majority of the fish supply is now heavily tainted with industrial toxins and pollutants, such as heavy metals, PCBs, and radioactive poisons. These toxins make eating fish no longer recommended.

About the only exception are wild-caught Alaskan salmon and very small fish like sardines. The highest concentrations of mercury are found in large carnivorous fish like tuna, sea bass, and marlin. You may need to be especially cautious canned tuna as well, as independent testing by the Mercury Policy Project found that the average mercury concentration in canned tuna is far over the “safe limits” of the Environmental Protection Agency (EPA).

It is also important that you avoid farmed salmon, which contains only about half of the omega-3 levels of wild salmon. It may also harbor a range of contaminants, including environmental toxins, synthetic astaxanthin, and harmful metabolic byproducts and agrichemical residues of GMO corn- and soy-based feed they are given.

    • Fish oil – Fish oil is among the primary ways that people enhance their intake of omega-3 fats. High-quality fish oils can certainly provide many health benefits. However, this oil is weak in antioxidants. This means that as you increase your omega-3 intake through fish oil consumption, you actually increase your need for added antioxidant protection.

This happens because fish oil is a bit perishable, and oxidation leads to the formation of harmful free radicals. Antioxidants are therefore necessary to ensure that the fish oil doesn’t oxidize and become rancid in your body.

    • Cod liver oil – I no longer recommend this because of the potential for problematic ratios of vitamins A and D.
    • Krill oil – This is my preferred choice for animal-based omega-3 fats. Its antioxidant potency is 48 times higher than fish oil. It also contains astaxanthin, a marine-source flavonoid that creates a special bond with the EPA and DHA to allow direct metabolism of the antioxidants, making them more bioavailable.

Krill Oil BenefitsKrill – or “okiami” as the Japanese call it – are small, shrimp-like creatures that are a cherished food source in Asia since the 19th century or earlier.

Krill harvesting is a completely sustainable and one of the most eco-friendly on the planet. Krill are the largest biomass in the world and can be found in all oceans. Antarctic krill, by far the most abundant, is under the management of an international organization of 25 countries known as the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR).

Antarctic krill biomass is using strict international precautionary catch limit regulations, reviewed regularly to assure sustainability. No shortage of krill has ever been forecasted by CCAMLR.

Fish oil and krill oil are the two major players in the realm of animal-based omega-3 fats. But I have plenty of reasons to believe that krill oil offers superior benefits. In fact, two studies illustrate this:

  • A January 2011 study in Lipids13 found that the metabolic effects of the two oils are “essential similar,” but krill oil is as effective as fish oil despite containing less EPA and DHA.
  • Another data, still unpublished in that year, suggests that krill oil is absorbed up to 10 to 15 times as well as fish oil. Its molecular composition14 is said to account for this better absorbability.

This Mercola infographic will provide a summary of why I choose krill over fish oil.

Giving Omega-3 Fats to Your Child

From the time of your pregnancy through your child’s later life, omega-3 fats DHA and EPA have a radically important role in her brain health and other functions. I recommend supplementing with krill oil before and during pregnancy, and while you breastfeed. Babies receive DHA through your breast milk, so continuing breastfeeding through the first year will give your child a great headstart for health and success.

As soon as your child can safely swallow a capsule, she can start taking a high-quality krill oil supplement, which should be kid-sized or about half the size of a regular capsule. The supplement should also be odor-free, making it easy and palatable for children to swallow.

Final Recommendations

Make sure that you and your children get the right type of omega-3 fats. Go for a pollution-free, eco-friendly, and highly sustainable source, like krill oil. The good news is that krill oil appears to work at a lower dose, and this results in major cost savings, making it more affordable than fish oil.

I always emphasize making healthy, wholesome food choices to get all the nutrients you need. In this case, supplementing your diet with a high-quality source of omega-3 fats, such as real krill oil, is a surefire way to help optimize your health.

 

Vitamin D Deficiency Linked to Many Disorders

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Vitamin D DeficiencyJanuary 02, 2014

Story at-a-glance+

By Dr. Mercola

Vitamin D research continues to impress upon us the importance of appropriate sun exposure as the ideal way to optimize your vitamin D levels.

Winter limits sun exposure for many up to six months of the year. During those times, your next best bet would be artificial UVB light, as UV ray exposure also appears to have health benefits above and beyond the production of vitamin D.

One of the most damaging elements of standard tanning beds are the magnetic ballasts (which make that loud buzzing noise you hear in many tanning salons). If an electronic ballast is used, there are far less damaging EMFs, which provide most of the danger from tanning beds.

The other concern is related to the bulbs used, as some may contain only UVA light which is primarily responsible for the tan, but doesn’t increase vitamin D levels.  For much of the northern hemisphere, vitamin D production is not possible from the sun during the winter months.  You must use artificial UVB light or obtain vitamin D from your diet during this time.

The benefits of UVB exposure from the sun or artificial light include but are not limited to the production of nitric oxide—a compound that lowers your blood pressure. Despite its name, vitamin D is not a vitamin. It’s actually a potent neuroregulatory steroidal hormone, which helps explain some of its health impacts.

It has become abundantly clear that vitamin D deficiency is a growing epidemic across the world and could be contributing to hundreds of common health problems. In fact, correcting your vitamin D deficiency may cut your risk of dying from any cause by 50 percent, according to one analysis.

If this sounds too incredible to be true, consider that vitamin D influences nearly 3,000of your 24,000 genes. This occurs via vitamin D receptors, which can be found throughout your body, and should come as no great surprise given that humans evolved in the sun.

Vitamin D Beneficially Affects Gene Activity

Just one example of an important gene that vitamin D up-regulates is your ability to fight infections and chronic inflammation. It also produces over 200 anti-microbial peptides, the most important of which is cathelicidin, a naturally-occurring broad-spectrum antibiotic.

This is one of the explanations for why vitamin D is so effective against colds and influenza.

According to a January 2013 press release by Orthomolecular Medicine,1 there are now 33,800 medical papers with vitamin D in the title or abstract, and this veritable mountain of research shows that vitamin D has far-reaching benefits to your physical and mental health. Such research has shown that vitamin D can improve:

  • Pregnancy outcomes (reduced risk of Cesarean section and pre-eclampsia)
  • Type 1 and 2 diabetes
  • Heart disease and stroke
  • Autism, Alzheimer’s, and other brain dysfunction
  • Bacterial and viral infections

Some of the most recently published studies, which I’ll review here, demonstrate how boosting your vitamin D levels can improve depression and pain in diabetics, Crohn’s disease, and breast cancer.

Relevance of Vitamin D in Crohn’s Disease

While previous research has associated low vitamin D levels with an increased risk ofCrohn’s disease and shown that correcting your vitamin D deficiency can improve symptoms of the disease,2 one of the most recent studies3 found a “significant interaction between vitamin D levels and Crohn’s disease susceptibility, as well as a significant association between vitamin D levels and genotype.”

Serum vitamin D levels were found to be significantly lower in patients with Crohn’s disease. Of the seven DNA sequence variations examined for effects, two variants showed a significant association with vitamin D levels in those with Crohn’s, and four variants were associated with vitamin D levels among controls.

In short, it shows that vitamin D can affect genetic expression associated with Crohn’s disease, and make matters either better or worse, depending on whether you have enough of it or not.

Vitamin D May Reduce Depression and Pain

In related news, vitamin D supplementation has been found to reduce both depression and pain in diabetic women. As reported by PsychCentral:4

“The investigators set out to determine how vitamin D supplementation might affect women with type 2 diabetes who were also suffering from depression.

At the beginning of the study, 61 percent of women reported neuropathic pain, such as shooting or burning pain in their legs and feet, and 74 percent had sensory pain, such as numbness and tingling in their hands, fingers and legs.

During the course of the study, the participants took a 50,000 IU vitamin D2 supplement every week for 6 months. By the end of the study, the women’s depression levels had significantly improved following the supplementation.

Furthermore, participants who suffered from neuropathic and/or sensory pain at the beginning of the study reported that these symptoms decreased at 3 and 6 months following vitamin D2 supplementation.”

According to lead researcher Todd Doyle, Ph.D., vitamin D supplementation “is a promising treatment for both pain and depression in type 2 diabetes.” However, I would note that you’d probably get even better results using vitamin D3 rather than prescription D2. In fact, previous research suggests vitamin D2 might do more harm than good in the long term…

Why I Recommend Vitamin D3 Over D2

Drisdol is a synthetic form of vitamin D2—made by irradiating fungus and plant matter—and is the form of vitamin D typically prescribed by doctors. This is not the type produced by your body in response to sun or safe tanning bed exposure, which is vitamin D3.

According to a 2012 meta-analysis by the Cochrane Database,5 which assessed mortality rates for people who supplemented their diets with D2 versus those who did so with D3, there are significant differences in outcome between the two. The analysis of 50 randomized controlled trials, which included a total of 94,000 participants, showed:

  • A six percent relative risk reduction among those who used vitamin D3
  • A two percent relative risk increase among those who used D2

That said, the featured research certainly sheds light on the role vitamin D can play in the management of type 2 diabetes and associated side effects. And when you consider that an estimated 60 percent of type 2 diabetics are vitamin D deficient,6there’s certainly plenty of room for improvement.

Additional support for the theory that vitamin D can be beneficial in the fight against type 2 diabetes was published in last year.7 Here, the researchers found “a strong additive interaction between abdominal obesity and insufficient 25(OH)D in regard to insulin resistance.” They also claim 47 percent of the increased odds of insulin resistance can be explained by the interaction between insufficient vitamin D levels and a high body mass index (BMI).

Yet another study 8 published in Diabetes Care also suggests vitamin D supplements may help prevent type 2 diabetes mellitus in people with pre-diabetes. While the study is only an observational one and cannot establish causality, the researchers report that the participants who had the highest vitamin D levels were 30 percent less likely to develop diabetes during the three-year evaluation period, compared to those with the lowest levels.

Cut Your Breast Cancer Risk with Vitamin D, Cancer Surgeon Suggests

Meanwhile, a recent Science World Report9 highlighted the recommendation by British breast cancer surgeon, Professor Kefah Mokbel, who urges women to take daily vitamin D supplements to cut their risk of breast cancer. According to the featured article:

“Prof. Mokbel has also requested Jeremy Hunt, the Health Secretary, to make [vitamin D] pills freely available as this would result in saving about a 1,000 lives annually. ‘I am calling for all women from the age of 20 to be given free vitamin D supplements on the NHS because it is effective in protecting against breast cancer,’ Prof. Mokbel said.

…[R]esearch10, 11 conducted by the Creighton University School of Medicine in Omaha, Neb, which analyzed menopausal women from rural eastern Nebraska for over four years, revealed that taking vitamin D supplements along with calcium cut about 60 percent risk of cancer, including breast, lung and colon cancer…’It’s inexpensive, it’s safe, and it’s easy to take. It’s something that should be considered by a lot of people,’ says Joan Lappe, professor of nursing and medicine at Creighton University School of Medicine in Omaha, Neb. ‘It’s low-risk with maybe a high pay-off.’”

Vitamin D Is Critical for Cancer Prevention

Indeed, an ever growing number of studies show that vitamin D has tremendous protective effects against a variety of different cancers, including pancreatic, lung, ovarian, breast, prostate, and skin cancers. Theories linking vitamin D deficiency to cancer have been tested and confirmed in more than 200 epidemiological studies, and understanding of its physiological basis stems from more than 2,500 laboratory trials.

For example, a 2007 study published in the American Journal of Preventive Medicine12concluded that a serum 25(OH)D level of more than 33 ng/mL was associated with a 50 percent lower risk of colorectal cancer. And research published in the International Journal of Cancer two years ago13 found that a mere 10 ng/ml increase in serum vitamin D levels was associated with a 15 percent reduction in colorectal cancer incidence and 11 percent reduction in breast cancer incidence.

Another 2007 study published in the American Journal of Clinical Nutrition14 found that after four years of follow up, cancer-free survival was 77 percent higher in women who received 1,100 IU vitamin D and 1,450 mg calcium per day, compared to those who received either a placebo or calcium by itself. According to Carole Baggerly, founder ofGrassrootsHealth, as much as 90 percent of ordinary breast cancer may in fact be related to vitamin D deficiency. Breast cancer has even been described as a “vitamin D deficiency syndrome,” much like the commoncold and seasonal flu.

Most Important—Maintaining Optimal Vitamin D Serum Levels

Of utmost importance is the maintenance of a therapeutically beneficial serum level year-round. Here, studies indicate that the bare minimum for cancer prevention is around 40 ng/ml. Research suggests an ideal level might be around 60-80 ng/ml. A 2009 review article15 titled: “Vitamin D for Cancer Prevention: Global Perspective,” published in Annals of Epidemiology states that:

“Higher serum levels of the main circulating form of vitamin D, 25-hydroxyvitamin D (25(OH)D), are associated with substantially lower incidence rates of colon, breast, ovarian, renal, pancreatic, aggressive prostate and other cancers. Epidemiological findings combined with newly discovered mechanisms suggest a new model of cancer etiology that accounts for these actions of 25(OH)D and calcium. Its seven phases are disjunction, initiation, natural selection, overgrowth, metastasis, involution, and transition (abbreviated DINOMIT). Vitamin D metabolites prevent disjunction of cells and are beneficial in other phases.

It is projected that raising the minimum year-around serum 25(OH)D level to 40 to 60 ng/mL (100–150 nmol/L) would prevent approximately 58,000 new cases of breast cancer and 49,000 new cases of colorectal cancer each year, and three fourths of deaths from these diseases in the United States and Canada, based on observational studies combined with a randomized trial.

Such intakes also are expected to reduce case-fatality rates of patients who have breast, colorectal, or prostate cancer by half... The time has arrived for nationally coordinated action to substantially increase intake of vitamin D and calcium.” [Emphasis mine]

Download Interview Transcript

General Supplementation Guidelines

As a general guideline, research by GrassrootsHealth suggests that adults need about 8,000 IUs per day to achieve a serum level of 40 ng/ml. That said, I strongly recommend boosting your vitamin D levels through appropriate sun exposure whenever possible. If you do opt for a vitamin D supplement, please remember that you also need to boost your intake of vitamin K2 through food and/or a supplement. If you’re getting your vitamin D from the sun, this is not as critical, although you’d be wise to make sure you’re getting sufficient amounts of vitamin K2 from your diet either way.

How do you know if your vitamin D level is in the right range? The most important factor is having your vitamin D serum level tested every six months, as people vary widely in their response to ultraviolet exposure or oral D3 supplementation. Your goal is to reach a clinically relevant serum level of 50-70 ng/ml, and to maintain that level year-round.  You should test at your highest point, which is typically August and again at your lowest point, which is usually February.

Knowing your vitamin D levels is one of the most important tests you can take, so please, if you haven’t checked your levels before do it now – I cannot stress the importance of this enough.

vitamin d levels
Sources

How Vitamin D Performance Testing Can Help Optimize Your Health

A robust and growing body of research clearly shows that vitamin D is absolutely critical for good health and disease prevention. Vitamin D affects your DNA through vitamin D receptors (VDRs), which bind to specific locations of the human genome. Scientists have identified nearly 3,000 genes that are influenced by vitamin D levels, and vitamin D receptors have been found throughout the human body.

Is it any wonder then that no matter what disease or condition is investigated, vitamin D appears to play a crucial role? This is why I am so excited about the D*Action Projectby GrassrootsHealth. It is showing how you can take action today on known science with a consensus of experts without waiting for institutional lethargy. It has shown how by combining the science of measurement (of vitamin D levels) with the personal choice of taking action and, the value of education about individual measures that one can truly be in charge of their own health.

In order to spread this health movement to more communities, the project needs your involvement. This was an ongoing campaign during the month of February, and will become an annual event.

To participate, simply purchase the D*Action Measurement Kit and follow the registration instructions included. (Please note that 100 percent of the proceeds from the kits go to fund the research project. I do not charge a single dime as a distributor of the test kits.)

As a participant, you agree to test your vitamin D levels twice a year during a five-year study, and share your health status to demonstrate the public health impact of this nutrient. There is a $65 fee every six months for your sponsorship of this research project, which includes a test kit to be used at home, and electronic reports on your ongoing progress. You will get a follow up email every six months reminding you “it’s time for your next test and health survey.”

Vitamin D Kit
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