New England Health Advisory

By Inger Pols

If you have read any of my past issues, you know how important I believe omega-3 fatty acids are to good health. Because most of us simply cannot consume enough omega-3 to balance our heavy omega-6 consumption (in total and at each meal), I recommend supplementation.

I also advise that you seek high-quality fish oil because certain conditions can render the wonderful health benefits of fish oil damaging. For example, fish oil can oxidize if exposed to air or temperature changes and turn rancid. It is also important that your fish oil be thoroughly screened and distilled to remove mercury and polychlorinated biphenyls (PCBs).

In past issues, we’ve talked a little about how to choose high quality fish oils, but today we are going to look at a recent lawsuit in California that highlights the importance of selecting high quality fish oil and go a little deeper into how to make the best supplementation choice.

PCBs and Proposition 65

While there are several issues to consider when selecting fish oils. my focus today will be predominantly on the issue of PCBs and contaminant screening. PCBs are industrial chemicals that were banned in the 1970s because of their link to cancer and birth defects. But PCBs remain present in our soil and water as they take a very long time to break down. We have talked about the impact of PCBs in our fish, meat and diary supply in previous newsletters. PCBs are also in vegetables due to their presence in soil.

Not surprisingly, because of their presence in fish, PCBs are a concern in fish oil supplements. Fish that are caught close to shore and farmed fish are at higher risk for contamination, and they require distillation for toxin removal. The degree to which fish oil products are screened and distilled for chemicals varies significantly by manufacturer, and in general, you get what you pay for.

Most states have no regulations on the chemical load tolerated in products, so most manufacturers avoid the expense of reliably screening out contaminants or engaging in third-party lab testing. California, however, has set standards for exposure to known carcinogens such as PCBs. The Safe Drinking Water and Toxic Enforcement Act of 1986, also known as Proposition 65, requires that the state document known chemicals causing cancer or reproductive toxicity and there are currently almost 900 on the list!

About 300 of the chemicals have “safe harbor” levels, under which the contaminant is considered to have no “significant” risk. Above those levels, however, companies are required to label products to warn consumers that there are significant levels of these chemicals in the product. In California, PCBs are one of the 300 chemicals for which thresholds have been established, and a threshold of no more than 90 nanograms (or .09 mcg) of PCBs is deemed tolerable for consumption each day. (While one might question if there really is any safe level of harmful contaminants, at least California has attempted to set a safety threshold.)

The Fish Oil Lawsuit

There are more than 100 brands of fish oil on the market in California, but recently, the Mateel Environmental Justice Foundation selected 10 brands to test for PCB levels. They found that all of them contained PCBs and that three of them were significantly over threshold rate if taken at their suggested dosage. Some exceeded tolerance levels by a factor of 10 and none of the products bore warning labels.

Mateel and its attorney David Roe, who helped write the Proposition 65 law, have filed a lawsuit against fish oil manufacturers, distributors and retailers claiming that according to California law, they failed to give clear warnings that the products would expose consumers to high levels of PCBs. The lawsuit asks the court to require fish oil manufacturers provide warnings to present and future customers and to track down individual past customers, and to provide civil penalties of up to $2500 for each day of customer exposure without the warnings.

The lawsuit targets five supplement producers (General Nutrition Corp. (GNC), Now Health Group Inc, Pharmavite LLC, Solgar Inc, and TwinLab Corp) two large drugstore distributors, (CVS Pharmacy Inc and Rite Aid Corp.), as well as the largest producer of omega-3 oil, Omega Protein Inc. Fish oil, shark oil, fish liver oil, and shark liver oil supplements were called into question.

In 2008, U.S. consumers spent $739 million on fish and animal oil supplements. As the eighth most popular dietary supplement, according to Nutrition Business Journal, the impact of the claim is far-reaching.

So what does this mean?

First, it is important to note that this was a small sample–there are over 100 supplements on the market and only 10 were tested, and not all of the products tested raised concerns. Toxicity level can vary significantly by batch even within the same manufacturer, so one could argue these were just bad batches.

On the other hand, one could also argue some of the brands that escaped got lucky because good batches of their supplements were tested. Most states do not have laws such as California so the policing of safe contaminant levels is minimal. Consumers must rely on manufacturers’ own testing policies and standards to make the best choices. Fortunately, there are some high-quality manufacturers who adhere to exceptional standards and there are some guidelines for consumers to help make better choices.

How to Choose the Best Fish Oil Supplement

First, consider the type of fish that is being used to make the oil. Predator fish such cod or shark will accumulate more toxins. (If you choose these fish, you’ll want to make sure you use a high quality manufacturer that is thoroughly screening for contaminants.) Fish lower on the food chain such as mackerel, sardines, and anchovies will have much lower contaminant levels.

Also consider the location of the fish. Fish caught in deep ocean water will have fewer contaminants than those caught closer to shore, farm raised, or found in more shallow inland water.

It’s important to look at the omega-3 fatty acid levels of docosahexaenoic acid (DHA) as well as eicosapentaenoic acid (EPA) in your fish oil. The benefits of EPA were discovered first and most oils focus primarily on EPA. We now know that DHA is equally important and while it is challenging to find oils with an equal balance of each, if not equal, you should make sure your oil does not completely neglect DHA in favor of much higher levels of EPA.

Finally, consider the source of the fish. Oil from fish liver will be higher in PCBs and other contaminants because the liver is the organ responsible for processing undesirable elements. An oil that is derived from the whole fish or pressed from fish flesh will have lower contaminant levels.

If you are a proactive consumer who wants to do research about fish oils or other products/supplements, you can join Consumer Labs, a subscription fee-based service that tests products and publishes their results. For a modest monthly fee, you can get their results on 52 tested fish oils and omega-3 supplements that did not contain any detectable mercury and passed contamination limits for lead and PCBs. However, the standards by which they evaluate oils are not as stringent as many experts now recommend and the majority of the oils tested were not tested for dioxins, so some experts question the relevance of their test results.

The International Fish Oil Program in Canada tests and evaluates fish oils at a higher measurement standard and their free website will allow you to see results of several name brands. However, many brands are not tested, so you may not find your favorite there.

If you want to skip the research, there are a few exceptional brands that have consistently maintained high quality standards that I can recommend. Nordic Naturals regularly has its oil tested by third party labs and receives stellar results. I recommend Nordic Naturals to those willing to spend a little more to get a high quality supplement.

Another fish oil supplement brand that I recommend is Carlson Labs. Less expensive than Nordic Naturals, Carlson regularly tests (using Association of Official Analytical Chemists (AOAC) international protocols) for freshness, potency and purity by an independent, FDA-registered laboratory and has been determined to be fresh, fully potent and free of detrimental levels of mercury, cadmium, lead, PCBs and 28 other contaminants.

There are certainly other excellent choices out there, so do a little due diligence on your brand to be sure it’s a good choice. Try to work fish into your regular diet but don’t let the test results scare you away from supplementation. Supplementation is still the right choice for most of us; we just need to make sure we choose products and manufacturers that adhere to the highest standards and engage in reliable third party testing for contaminants.

To your health!

Inger Pols

Editor of New England Health Advisory

By Inger Pols

In the final newsletter in the food swap series, I’m going to look at making healthier fish choices. Fish is a nutrient-rich food proven to improve heart health and prized as a primary nutrient source in many cultures. Fish provides protein without the saturated fat and is a good source of omega 3 fatty acids. Fish has become increasingly popular since word got out about the benefits of eating it at least two times a week.

While fish has many health benefits, some studies have questioned the healthiness of farm-raised fish, especially salmon. There’s also concern about dolphins and fish that are killed in the tuna fishing process; their bodies are thrown back into the sea as waste. The popularity of fish has raised concerns about over-fishing and the sustainability of commercial fishing long-term. The quality of fish has diminished, especially those caught closer to shore and those found in lakes and streams, where contaminants foul our water supply.

Choosing the best fish is not just about what kind of health benefits the species has, the way it was raised or caught is also important to the nutritional profile. And if you are concerned about the environment and sustainability, the destruction left in the wake of the fishing boats matters, too. Species, season, diet, life stage, age and location all affect the contaminant level and nutritional profile of fish. There is no standardization for effective comparisons, and very little regulation, measurement or labeling to inform consumers.

Though more Americans are beginning to learn about factory farming concerns with livestock thanks to authors like Michael Pollan and movies like Food, Inc., many of us still know little about the factory farm process for fish. So let’s start by looking at salmon farming and why it raises so many concerns.

Salmon Farming: It’s No Swim Upstream

When we think of salmon, we usually see the image of a salmon swimming upstream to spawn, fighting against all odds to lay eggs before it dies. But instead of jumping upstream or powering through the ocean waters, farm salmon circle lazily in small pens much like floating pig farms. Waste and excess feed cover the sea floor beneath the farms, creating bacteria that consume oxygen that is required to sustain life for creatures that dwell on the ocean floor. Copper sulfate is used on the nets to prevent algae build up but leaves toxic sediment on the sea floor. Fish can also escape through the nets, creating environmental concerns; scientists estimate more than a million farmed Atlantic salmon have escaped into the Pacific and it is unclear what effect this will have on the Pacific salmon population over time.

As with land-based livestock, farm-raised salmon are vaccinated against diseases that spread easily in the close quarters of the pens. They are fed more antibiotics by body weight than any other livestock to prevent infection (creating strains of disease-resistant bacteria in both farmed and wild fish). And they are doused in pesticides to get rid of sea lice.

Sea lice exist in the wild as well, but are rampant in the close quarters of a fish farm. Scientists are concerned that wild species that swim by farms will be exposed to sea lice, which can damage or kill the vulnerable young salmon. Net hauls have dropped significantly and fisherman who once supported the farms as a means of ensuring ocean salmon sustainability are becoming concerned.

Farmers say it’s unlikely that they are responsible for a decline in wild salmon because the pesticide emamectin benzoate is only added to feed when sea lice are present. In Canada, the rules state that farmers must stop use of the pesticide 25 days before harvest to keep the fish safe to eat. But it’s unclear how much exposure is really OK and how much remains in the fatty tissue after dosage has stopped.

Farm salmon are fed smaller chopped up fish and pellets of feed laden with pesticides, raising concerns about sustainability for those fish. It takes an average of 2.4 pounds of wild fish to sustain a one-pound farm raised salmon and scientists are concerned that the farming practice is only making sustainability of ocean fishing worse.

To make salmon skins pink, since they don’t eat the typical salmon diet of pink krill, thus absorbing cartenoid, or use their muscles as much as typical salmon would, farm salmon are fed synthetic pigments including canthaxanthin to turn their otherwise dull gray flesh a vivid pink. In Canada, the flesh color options, manufactured by pharmaceutical company Hoffman-LaRoche, are delivered to the farmers so they can pick the exact shade of pink they like.

Canthaxanthin, when taken in a sunless tanning pill, was linked to retinal damage in Europe. It’s banned in England, and the European commission has issued a warning about it, urging the industry to find an alternative. But it remains legal elsewhere, and in the U.S., scientists aren’t focused on it as they put most of their attention into what they deem to be a bigger problem: PCBs and toxic dioxins in the fish.

PCBs, Importation and Mercury

PCBs, or polychlorinated biphenyls, are highly toxic compounds that were banned in the 1970s. They pose serious health risks to children, especially babies and fetuses, who can experience developmental and neurological problems from repeated or prolonged exposure to even small amounts of PCBs. They affect adults as well, especially those with impaired immune systems or insufficient healthy gut flora.

Even though they were banned decades ago, these industrial compounds are very slow to break down and remain present in our environment, especially in sediment at the bottom of streams, lakes, rivers and coastal areas. They can be absorbed by fish and remain in their fatty tissues, building up in humans if contaminated fish is consumed frequently.

While these contaminants are a concern among wild fish, especially any lake or stream fish or those caught close to shore, two major studies have shown that farmed salmon accumulate more of these substances, which are known carcinogens, than wild salmon. The feed appears to be the concern, as it includes higher amounts of ground up sardines, anchovies and other small fish than a wild salmon would consume.

Manmade contaminants make their way into the ocean and are absorbed by fish. Then those fish are consumed in large amounts by the farm salmon, and the contaminants accumulate in the fatty tissue. It is estimated that farm-raised salmon have seven times as many PCBs in their systems as wild salmon. Farm raised salmon have a higher fat content than wild because they don’t move around much as their active wild counterparts, so they have more fatty tissue to absorb contaminants. Unfortunately, the higher fat content is not healthy omega 3 fatty acids; it’s less healthy, pro-inflammatory omega 6 fat.

It’s estimated that 68% of fish consumed in America is imported from another country, where it is often farmed and not always labeled. While the U.S. has no standards for organic seafood, (though Whole Foods says it has instituted its own farm fish standards to ensure healthy safe fish options), the European Union has had them for years. So organic European fish can be a safe choice. But many fish brought in from other countries contains additional chemicals and additives that we would likely not approve of.

The FDA inspects only about 5% of all imported farm fish, so many countries disregard the rules and take a chance, knowing it’s unlikelythat they will get caught. Recently, the FDA blocked the sale of three kinds of fish from China because they contained “unapproved” drugs. However, it’s equally concerning that there are many “approved” drugs that could have been used freely and allowed to become part of our food supply.

Mercury is another concern in both wild and farm-raised fish. While we eat fish for good heart health, mercury can actually increase the risk of heart attacks. Recent studies have shown that like PCBs and toxins such as bisphenol-A (BPA), a known endocrine disruptor that comes from plastic pollution in our waters, mercury levels are higher in farm-raised fish than in the wild.

Mercury from industrial pollution enters the water and is converted to methylmercury, a toxin that is consumed by smaller fish. Again, the larger fish consume the smaller fish and take in that toxin. This occurs in the wild as well, however, as we have just seen, the practice of grinding up large amounts of small fish to feed the farm-raised salmon means they eat much more of the small fish than they would in the wild, increasing their ingestion of toxins.

Clearly there are some issues with fish farming. But to be fair, there are issues with wild fishing as well. The same contaminants are present in lakes, streams and rivers, making many fish from those sources no longer safe to eat. Several states have issued advisories on their lake fish. Fish caught close to the coast face the same concerns. While deep-water fish are the least affected by these issues, these fish are often caught through practices like trolling with large nets that result in the accidental death of other species.

So what can we do? Here are some tips for healthier fish consumption.

Making Healthier Fish Choices

Use safe cooking methods to minimize the consumption of skin and fat, where PCBs accumulate. Trim the fish and remove skin and the fat along the backsides and belly and remove the internal organs, lobster tomalley and mustard of crabs, before you cook them. Try grilling and broiling fish, letting the fat drip away while it’s cooking and minimize use of fish drippings. Avoid frying fish as that seals in the contaminants. And if you are smoking fish, fillet and remove the skin prior to the smoking process.

If you, or your children, love tuna fish, minimize the exposure to mercury by choosing light tuna, not albacore, and eat it less often. Because their brains and nervous systems are still developing, children are particularly susceptible to mercury contamination. According to the Environmental Defense Fund, chunk/solid white is a larger tuna that accumulates more mercury, while skipjack, which is in most canned light/chunk light tuna, has about one-third the mercury level as albacore.

But it’s still important to read the label, as some canned light tuna contains yellowfin tuna, which is similar to albacore in mercury levels. Sometimes labeled (but not always) gourmet or “tonno” these should be eaten only in limited amounts by both children and adults. Small kids should limit tuna to a couple meals a month, while older kids can usually have it safely once a week. (If you have a compromised immune system or are pregnant, you may want to avoid tuna completely.)

Generally speaking, deep-water, cold-water fish are the least contaminated. If you are buying salmon, always look for Alaska wild sockeye or red salmon. But decide what matters to you: omega 3 consumption, avoiding PCBs and mercury or sustainable fishing and make choices based on your priorities. Ask questions about fish sources and vote with your wallet. Support the call for improved farm-fishing standards and practices. And most important, don’t be a creature of habit when it comes to fish consumption: Choose a variety of fish for your diet to spread the toxin exposure risk. Fish are a wonderful source of healthy fats and protein and eating fish twice a week—despite the toxin exposure risk—for most people is still a good long-term health choice.

Clearing up the Muddy Waters

While choosing the right fish can be confusing, at least one organization has attempted to simplify the process. The Monterrey Bay Aquarium has put together a guide that evaluates fish based on three major criteria: omega 3 levels, the presence of mercury and other toxins and the sustainability or ocean-friendly status of their harvest/capture. It also factors in whether fish are overfished and caught faster than they can reproduce.

The aquarium worked with the Harvard School of Public Health and the Environmental Defense Fund to create a list of fish that are Eco-best choices, Eco-good choices and Eco-avoids. They also created a super green list of wild and farmed fish that are good for people and the oceans. The aquarium has created a series of pocket guides by region that you can print and carry with you when you go shopping.

The list changes monthly based on new information. The current best of the best list for May 2010 includes: Albacore Tuna (troll or pole caught from the U.S. or British Columbia), Freshwater Coho Salmon (farmed in tanks from the U.S.), mussels (farmed), oysters (farmed), Pacific sardines (wild caught), rainbow trout (farmed) and salmon (wild caught from Alaska). You can learn more here.

No system is perfect, and the aquarium’s top choice of tuna that is troll or pole caught may be a good example, since finding that option in a typical store will be quite challenging, if not impossible. In addition, while they recommend albacore tuna, the Environmental Defense Fund recommends you avoid it for tuna fish sandwiches. Despite not being perfect, the list is an attempt to help you make good choices for your body and our planet. Combined with your own common sense and priorities, you will discover the best fish choices for you and your family.

To your health!

Inger Pols
Editor of New England Health Advisory

By Inger Pols

This is part five of a series on the supplements I think every adult should take. Previous issues focused on whole-food based multivitamins, ubiquinol, fiber and omega 3. You can read them by clicking here.

The final supplement on the list is vitamin D, which is made in our bodies through sun exposure. But today, we simply don’t get enough direct exposure to sunshine, without sunscreen, to make the vitamin D we need.

Vitamin D helps with bone health by facilitating calcium absorption. It also plays an important role in many other healthy body functions. Vitamin D has been shown to improve immune health and heart health, protect against cancer, autoimmune diseases, depression and a host of other conditions.

Vitamin D deficiency is a major cause for concern as it affects multiple systems in our bodies. Vitamin D deficiency is far more pervasive than previously believed, with research now indicating virtually all adults and children have lower than optimal vitamin D levels.

The only way to know how much vitamin D you need on a daily basis is to get your levels tested a couple of months after you begin to supplement. You want to see levels of 125-200 nmol/L, or nanomoles per liter. (Sometimes test results are reported in nanograms per milliliter or ng/ml. It’s the same test, just a different measurement: Like miles per hour versus feet per second. If your test results are in ng/ml, you will want to see at least 50 ng/ml for optimal vitamin D function.)

Estimates now suggest that 5,000 International Units, or IU, of vitamin D a day or 35 IU per pound for kids or heavier people is appropriate. But some of us need more: I was recently listening to a renowned brain expert say that as a physician, he was shocked when he found out after vitamin D testing that his body required 10,000 IU a day to function at its optimal level since he lives in southern California and is exposed to sunshine all year.

My whole food multivitamin contains 5,000 IU of vitamin D3 and I get plenty of daily summer sunshine, so I don’t take a supplement in summer. But most multivitamins have shockingly low levels of vitamin D3. So even if you are taking a good whole-food multivitamin, you’ll most likely need to add some D3, unless you get time outside without sunscreen every day. And even though my multivitamin provides a good baseline, I still find that I need to supplement with an additional 1,000-2,000 IUs of vitamin D3 during the long New England winters. Unless you are in a warm weather climate, you probably will too.

If you haven’t read my full article on vitamin D, you should check it out. Before we leave the topic of supplements, I want briefly mention three other supplements that did not make my top five list that you may want to consider: collagen, probiotics and DIM.

Collagen

If you read my article on bone health, you know how important collagen is to avoiding bone fractures. You can and should get your collagen from eating good collagen-rich foods like dark green leafy vegetables. But if you find—like many—that you may not be eating enough collagen and you are not taking a good whole-food multivitamin, you may want to consider collagen supplementation.

As I shared in an earlier article, in order to maintain my weight and to prevent blood sugar issues, I try to eat small amounts of protein, healthy fats (omegas 3s) and fiber at every meal or snack. If I am ever in a situation where I am not consuming protein, I will take a collagen supplement (and a fiber or omega 3 supplement if needed) for balance. While not nearly as good as eating the right foods, in a pinch, it’s better than taking in carbohydrates (sugar) without any having protein to balance it out since carbs ingested without a protein counterbalance are stored as fat in the body.

Probiotics/Digestive Enzymes

We’ve all heard of antibiotics: They kill off or inhibit the growth of bacteria. But antibiotics also kill off the healthy bacteria in our digestive tract and inhibit our ability to digest food and to absorb nutrients. Probiotics contain the beneficial flora that your digestive system needs and digestive enzymes that work in your stomach to help break down foods. Both can be damaged by illness, poor diet and antibiotics, so if you have experienced any of those and have not taken a course of probiotics and enzymes afterward, your digestive system is likely not operating at top capacity.

Probiotics and digestive enzymes are also a must if you have digestive concerns such as cramps, constipation, diarrhea, gas or bloating or Irritable Bowel Syndrome. If you struggle with allergies or asthma, food sensitivities such as sugar or gluten, yeast infections or urinary tract infections, rosacea, acne or skin conditions, headaches or migraines, chronic bad breath (halitosis), PMS or hormonal imbalance, or achy joints, you should consider probiotic supplementation.

Depending on how long and how strong your course of antibiotics was, or how severe your digestive concerns are and what your diet is like (if it is very acidic), you may want to stay on probiotics for a while to ensure balance is restored and maintained. At a minimum, you’ll want to take probiotics and digestive enzymes while taking antibiotics and for several weeks afterward. A two to three month supplementation cycle is great for restoring balance and digestive health after any significant stress to your digestive system. Eating yogurt can help, but your body most likely needs more help than yogurt alone can provide.

Even if you haven’t had antibiotics lately or faced a digestive health concern, your system could still be imbalanced from a concern long ago. Probiotics can help restore balance if you have a heavily acidic diet that promotes yeast and causes other imbalances in your digestive pathway. I recommend a month (or two) of probiotic and digestive enzyme supplementation every year to help ensure your digestive system has everything it needs to maximize the nutrient absorption of the food you are eating.

There are many different probiotic strains and each works differently in the body, so you may need to experiment with more than one brand to find the right one. If you are facing a specific issue, research your condition to find the best strains. The right probiotic should make a difference within the first week or two. If you don’t see improvement after two weeks, try another brand with different strains of bacteria. If you are just looking to restore balance annually with no specific concerns, choose a highly rated probiotic that has bifidobacteria and lactobacillus acidophilus in the billions.

DIM or Diindolylmethane

Diindolylmethane, or DIM, promotes healthy hormonal balance through beneficial estrogen metabolism. DIM is a naturally occurring phytonutrient found in cruciferous vegetables (like broccoli, cabbage or collards), which we know are good for us, but do not eat nearly enough of. DIM can balance estrogen by blocking “bad” estrogen and promoting good or beneficial estrogen in our bodies.

For women, healthy estrogen metabolism prevents breast, cervical and uterine cancers; for men, it is required for prostate health. (Men, you have estrogen in your bodies and are exposed to it in foods and the environment as well, so it’s just as important for you!) We are going to be talking more about DIM and prostrate health in Friday’s issue.

Not everyone needs DIM, so it didn’t make my top five list. But if you’re concerned about hormonal balance, fibers, tumors or reproductive cancers or prostate health, DIM is a supplement you should consider taking daily. (I found it quiets my hot flashes.) Generally speaking, unless cancer runs in your family, you are perimenopausal and/or you are already struggling with reproductive issues like fibroids or hysterectomy, it’s something you can wait to take until you’re in your 50s.

Research has shown that most DIM supplements cannot be absorbed; they require microencapsulation. Only one company, BioResponse, has a patented microencapsulation with extended release naoparticles, ensuring predictable absorption. This company is the only brand being used in all the published clinical trials, including those sponsored by the National Cancer Institute, so it’s the one I take and recommend.

To your health!

Inger Pols
Editor of New England Health Advisory

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By Inger Pols

This is part four of a five-part series on the five supplements I think every adult should take. Last week’s issues focused on whole-food based multivitamins, ubiquinol and fiber. You can read them by clicking here.

The fourth supplement every adult should be taking is one you’ve likely heard a lot about: omega 3. Research shows that 99% of us are omega 3 deficient, and a recent study at Harvard directly linked omega 3 deficiency to death in an estimated 72,000-96,000 people a year. To put that in context, there are approximately 40,000 deaths a year from breast cancer. Clearly, we need to start paying more attention to omega 3.

Omega 3s help reduce internal inflammation, which is linked to almost every chronic condition that plagues us. They play a very important role in heart health: Inhibiting thickening of the arteries, lowering the amount of lipids that circulate in our bloodstream, and helping arteries to relax.

Omega 3s can reduce obesity by stimulating the hormone leptin, which regulates food intake, body weight and metabolism, and they help prevent cancer cell growth. Omega 3s can also reduce depression, improve mental clarity and focus, reduce dry or itchy skin, improve hair and nails, and help prevent autoimmune disorders and Type 2 diabetes.

Three Types of Fatty Acids

Omega 3 is an essential fatty acid. Fatty acids fall into three groupings: saturated, monounsaturated and polyunsaturated. Each type is made up of carbon atoms with hydrogen atoms that fill in the spaces around them.

In saturated fatty acids, all of the spaces around the carbon atoms are completely filled in, i.e., saturated. As a result, they are very stable regardless of temperature. Saturated fatty acids are found mainly in dairy, red meat and chicken, but they can also be found in tropical oils like red palm oil and coconut oil. Our bodies can also make some saturated fat from eating carbohydrates.

Monounsaturated fats have a double bond between two carbon atoms and are missing two hydrogen atoms. They are called mono because of their single carbon double bond and unsaturated because not all of the spaces are filled—two hydrogen atoms are missing. Because the chain can bend at the double bond point, when you mix a large number of these chains together, it won’t be dense or compact; there will be room in between. As a result, these acids are usually liquid at room temperature and are relatively stable, though not as stable as saturated fats because they are not packed as tightly. The most common monounsaturated fat is oleic acid and examples are olive oil, avocados, peanuts, cashews, pecans and almonds. Your body can also make monounsaturated fat from saturated fat.

Polyunsaturated fats are missing several hydrogen atoms and they have two—or more—double bonds. As a result, since there is more than one double bond, they are called poly, meaning many. At each double bond, there is a kink in the chain, so they tend to be very loosely packed and remain liquid, even in colder temperatures. They are highly unstable fats and they can go bad (turn rancid) easily when exposed to heat and light.

When polyunsaturated fats turn rancid, free radicals are created and travel around in your blood causing damage to just about everything they interact with. Free radical damage has been tied to cardiovascular disease, autoimmune diseases, Alzheimer’s, Parkinsons’s, cataracts, tumors and aging. The most common polyunsaturated fatty acids are omega 3 and omega 6 fatty acids. They are called essential fatty acids because our bodies cannot make them; we must get them from the food we eat.

Omega 3s can do a lot of good. But rancid omega 3s can do a world of damage. We need omega 3s, but we need to ensure that they do not turn rancid in our bodies. Antioxidants will mitigate this, so it’s important to take antioxidants regularly along with omega 3s.

Fish oil is low in antioxidants, so some people like to take krill oil as an omega 3 supplement instead. Krill oil is a very pure omega 3 source and also contains antioxidants to help mitigate any free radical damage that may occur if oils turn rancid in your body.

Balancing Act: Omega 6 Versus Omega 3

Let’s go back to omegas 3 and 6. We need both of these essential fatty acids, but in today’s food supply, omega 6 acids are used heavily in processed foods. Vegetable oils such as corn oil, sunflower, soybean, cottonseed and safflower oil contain at least 50% omega 6 and very little omega 3. In addition, factory farming reduces the amount of omega 3s in meat, fish, eggs and vegetables.

I’ve read that a chicken that is free to eat its normal diet of grass and bugs will lay an egg that is a perfect balance of omega 6 to omega 3. However, the traditional vegetarian grain-fed chicken will yield an egg that is more like 20:1 omega 6 to omega 3. Nature undisturbed knows to work in perfect balance, but our changes in farming have disrupted that balance and left us with an overabundance of omega 6.

Ideally, we need a 1:1 ratio of omega 6 to 3, but our bodies can still cope fairly well with up to a 4:1 ratio. Unfortunately, the typical American diet is more like a 20:1 and can be up to a 50:1 ratio of omega 6 to omega 3. This is one reason it’s so important to supplement omega 3s. Not only do we need them in isolation, but we need them to balance our omega 6 intake.

An imbalance of omega 6 and omega 3 will prevent all of the wonderful health benefits I mentioned at the beginning of this newsletter. In addition, an unbalanced ratio that favors omega 6 over omega 3 can lead to weight gain, sterility, high blood pressure, digestive concerns, blood clots, inhibited immune function, inflammation and even cancer.

Three Omega 3 Essential Fatty Acids

How do we get omega 3s back in balance? I recommend you eat a varied whole food diet to get the three types of omega 3 essential fatty acids: ALA, EPA and DHA.

ALA or Alpha-Linoleic Acid is found in dark green leafy vegetables, flax and hemp seeds, walnuts and vegetable oils. EPA or EicosoPentaenoic Acid is found in cold-water fish like salmon, tuna, cod and mackerel and in seaweed. It can also be found in grass-fed beef and free-range (non-vegetarian fed) eggs in smaller amounts. DHA or DocosaHexaenoic Acid is found in the same foods as EPA.

Eating abundantly from these food groups will ensure that you have ample healthy fatty acids and a good balance of them in your body. If needed, the body can convert ALA to EPA or DHA, though the conversion process is slow. While we probably cannot overdo our dark leafy green vegetable consumption, supplementating ALA at high levels has been shown to have some adverse effects on the body. So when taking omega 3 supplements, EPA and DHA ae generally recommended.

Increasing omega 3 consumption overall is important, but so is ensuring that we have a healthy balance of omega 6 to omega 3 at every meal. I try to pay attention to my omega 3 food sources, as well as restrict my consumption of omega 6 heavy foods, but given modern farming practices and the overabundance of vegetable oils in foods, I still feel the need to take an omega 3 supplement with every meal to ensure I stay in balance.

I prefer fish oil pills because they tend to be more stable and they are more portable, but my daughter hates pills and takes the oil. Today, fish oil often has a citrus flavor and is no longer a challenge to swallow, especially when mixed into a drink. Choose a brand that screens for impurities like PCBs and mercury and keep it in the refrigerator or away from heat and light. If it smells funny or changes color, throw it out. Making sure your diet is rich in antioxidants is also a good way to prevent potential damage from oil that’s gone bad.

One caveat: Omega 3s can exaggerate the effect of prescription medications that are trying to do the same thing. For example, if you are on blood thinning medications like Coumadin, Plavix or even aspirin, you should discuss omega 3 consumption with your physician because it can be a blood-thinning agent. While omega 3 can be a helpful part of insulin and diabetes management, it can raise fasting blood sugar levels, so if you are on blood sugar medications such as Glucotrol and Glucotrol XL, Micronase or Diabeta, Glucophage or insulin, talk to your doctor as your dosage may need to be adjusted.

To your health!

Inger Pols
Editor of New England Health Advisory