Showing posts with label alpha linolenic acid. Show all posts
Showing posts with label alpha linolenic acid. Show all posts

January 4, 2009

Sneak Peek

The folks at Smart Balance sent me samples of their new shelf-stable peanut butter product due on supermarket shelves this April.

The selling points are:

* The inclusion of flax oil, bringing the ALA Omega-3 fatty acid total of a single two-tablespoon serving to 1,000 milligrams (63% of the Daily Value)

* The absence of partially hydrogenated oils (hence no trans fats)

* The use of agave nectar as a sweetener, rather than table sugar (sucrose)

Mind you, the first two selling points can already be found in the company's Omega Peanut Butter (pictured at left).

Both the smooth and crunchy varieties of this new variety passed my taste test (as well as that of fellow tasters I asked to sample the product), but let's talk nutrition.

Although the inclusion of agave nectar is touted as a healthier choice since its sweeter-than- sugar status means you need to use less of it to sweeten, it isn't a big enough difference in this case.

Smart Balance is being truthful when they advertise this peanut butter as containing "33% less sugar than leading brands," but you are talking about 2 grams per serving as opposed to 3 grams per serving (which translates to just four fewer calories.)

What absolutely confuses me, though, is the fact that the company's Omega Peanut Butter -- already in stores -- only contains one gram of sugar (in the form of molasses) per serving.

They could technically advertise this product as having "100% more sugar" than the one they have already launched!

I am also disappointed by the use of the term "naturally sweetened" in the packaging.

Remember, there is no concrete legal definition of the term "natural" for food advertising.

It is a word that means absolutely nothing; it is simply used to conjure up ideas of healthy, "back to basics" eating.

After all, poisonous mushrooms are natural, but that doesn't mean they are good for us.

I don't think this is "unhealthy" peanut butter by any means, but its sole unique selling point -- the use of agave nectar -- just isn't that big of a deal.

October 14, 2008

You Ask, I Answer: Fish Oil Supplements/Metal Toxicity Cleansings

Yesterday I attended a talk given by an "applied clinical nutritionist" who works at a local pharmacy.

She really advocated the use of supplements for everyone (probably because the pharmacy she works at generates a lot of revenue through the sale of herbs/supplements and homeopathic remedies).


She recommended taking fish oil instead of flax because she said that flax requires an extra step to be processed by the body.


She said that some people's bodies aren't able to perform this extra step and you would never know one way or another, so she just prefers to stick with fish oil.


Since you often recommend flax, what are your thoughts?


She also talked about "cleansing" (the colon in particular).

Her recommendation wasn't about losing weight, but rather to flush out toxins, no matter how healthy your diet.


She said this is needed to flush out "toxins" that accumulate in our bodies from pesticides in food, air pollution, etc.


The cleanse involves eating certain kinds of foods (she wasn't specific) and taking some sort of supplements that help flush your colon, like magnesium (I think).

All of this sounded sort of unnecessary to me.


Is there any evidence that this type of cleanse is beneficial for people whose diets are already consist of nutritious, whole foods?

-- Kristin (last name withheld)

Austin, TX


Before I begin, let me thank Kristin for following up her question with an e-mail revealing the results of her own investigative research.

Turns out that acquiring the "applied clinical nutritionist" title is a simple task.

"It's a self paced certificate program through the Texas Chiropractic College. To earn the certificate, you must be a health care professional, or the staff or student of a health care professional (I suppose you could be a dental receptionist). You have to attend 7 seminars (100 hrs), take a test and pay $1400. In return, you get a shiny wall plaque," writes Kristin.

Sigh. Of course.

This is precisely why I strongly (I'm talking "The Incredible Hulk" strong) believe the American Dietetic Association needs to launch a multimillion dollar campaign raising awareness of what makes Registered Dietitians different from all these other empty titles.

Unfortunately, the vast majority of individuals in charge of booking and hiring speakers for wellness events, health fairs, and media outlets have absolutely no clue what the difference is between a Registered Dietitian, a "naturopath," or an applied clinical nutritionist.

Anyhow, time to answer Kristin's question.

As far as the fish vs. flax issue, I agree with the speaker... to a point.

It is true that the Omega-3 fats found in flaxseed (ALA) need to be converted by the body to DPA and EHA.

It is also accurate to say that the majority of people do not convert ALA efficiently.

A significant factor inhibiting conversion is that Omega 6 fatty acids compete with Omega 3 fatty acids for the same desaturase (conversion) enzymes.

Keeping in mind that our current food supply contributes an abundance of Omega 6, you can see why ALA --> DHA/EPA conversion isn't happening as optimally as we would expect.

That being said, I still recommend ground flax simply because most people don't consume much of ANY Omega-3's.

Simply put, ground flaxseeds are an effortless way to add some Omega 3's to a variety of foods (not everyone likes fish or wants to eat it.)

I also hope that the speaker's recommendation of taking fish oil supplements was mainly targeted at people who do not consume fish.

I would much rather you get your DHA and EPA from actual food (i.e.: tuna, salmon, sardines) first, and consider supplements a "second best" choice.

Furthermore, I hope she stressed that non-DHA/EPA sources of Omega-3's offer a wide array of nutrients.

Ditching walnuts and flaxseed and instead swallowing a spoonful of fish oil every morning isn't necessarily a smart swap.

What I COMPLETELY disagree with her on (and why I doubt she is an RD) is her colon cleanse recommendation. Ugh. Ugh. UGH!

It is unnecessary and not particularly healthy.

If people want to "flush out" their colons, all they need to do is consume more insoluble fiber and liquids. Plain and simple.

Not to mention, I would love to ask this woman how exactly toxins accumulate in a body with a regularly functioning liver and kidneys.

There is no evidence whatsoever supporting the belief that we need to cleanse ourselves of toxins.

What I find most illogical is that people who furiously support colon cleanses are self-proclaimed "health experts," who apparently fail to realize that colon cleansing eliminates all the HEALTHY bacteria in the human gut and can cause electrolyte imbalances!

If you'll excuse me, I now need to go center myself.

August 28, 2008

You Ask, I Answer: Salba

Do you know anything about Salba?

It seems to be getting quite popular (I accidentally ordered a raspberry salba square at my local coffee shop the other day), and I'm not sure whether it's a fad or not.

Is it actually a whole food or is it processed?

Where does it come from?

Is it as good as the makers of it claim?


-- Meredith (Last name unknown)
Via the blog


The folks at Core Naturals sure are working hard to hype up Salba.

No clue what I’m talking about? Let me break it down.

According to manufacturer Core Naturals, the salba seed is pretty much the greatest food ever created.

Dubbed by the company as “nature’s perfect whole food,” the press release pushes it as a one-stop shop for some of the highest quantities of fiber, calcium, magnesium, vitamin C, folate, and Omega-3 fatty acids.

Then there are statements such as this:

“Because of Salba's ability to absorb several times its weight in water, it may also help to curb hunger.”

That’s wonderful, but that’s simply what all soluble fibers do – the same ones found in oatmeal, fruits, vegetables, and nuts.

Core Naturals even make reference to one nutrition PhD at a Toronto-based university who, after conducting research, confirmed that Salba’s advertised properties truly exist.

You know something is slightly off, though, when the bragging rights about the doctor go something like this: “[He works at] the same university where in 1921, Dr. Frederic Banting discovered insulin and won the Nobel Prize for Medicine.”

Errrr.... okay?

Besides, there is something very suspect about having only one professional analyze your food. If Core Naturals is so sure that what they have is -- for all intents and purposes -- manna, why not send it out to a variety of independent food laboratories to have their goldmine validated?

Anyhow, Salba is just a white chia seed – with the exact same nutritional profile of all other chia seeds (which are usually black).

So, yes, it is an unprocessed whole food, in the same way that fruits, vegetables, nuts, and a plethora of other seeds are.

Don't get me wrong. Chia seeds have a neat nutritional profile – they are a good source of fiber, phosphorus, manganese and Alpha Linolenic Acid – but by no means is Salba a powerfood, nor does it offer the same Omega-3 profile as 28 ounces of salmon (as Core Naturals advertises.)

That is a very easy statement to debunk, by the way. Remember, salmon offers EPA and DHA, two Omega-3 fatty acids not present in seeds.

This situation with Salba and Core Naturals would be paramount to a company patenting Granny Smith Apples, calling them something different and claiming they were nutritionally superior any other apples.

Considering that Salba retails for anywhere from two to three times as much as standard chia seeds, I don’t really see a reason for purchasing it.

File it under "F" for fad. No, make that "FF" for... flimsy fad.

August 12, 2008

You Ask, I Answer: Omega-3 Fatty Acids

I'm pregnant and my OB/GYN has suggested that I eat a lot of wild salmon for the health and nutritional benefits of the Omega-3's.

Only problem is, I gag at the smell and sight of fish right now.

So I've been trying to use ground flax seed sprinkled in other foods I can manage, like yogurt, fruit salad, toaster waffles and cereal.

I know the flax seed needs to be ground in order to be absorbed, but how much do I need to consume each day in order to get the same benefits as eating a serving of fish?

Are there other good sources of omega-3's that I should try?

-- “My Eggo is Preggo”
White Plains, NY

First of all -- congratulations!

Your question is a great one, since it deals with the different varieties of Omega-3 fatty acids.

Although we often refer to "Omega 3 fats" as one general category, there are three different types -- Alpha-Linolenic Acid (ALA), EicosoPentaenoic Acid (EPA), and DocosaHexaenoic Acid (DHA).

ALA is found exclusively in vegetable sources, including walnuts and flaxseeds.

EPA and DHA, meanwhile, are found in large quantities in cold water fish. Grass-fed beef also contains a little.

One concern with getting Omega-3's solely from vegetable sources is that many people are unable to convert ALA to EPA and DHA.

Fetuses are absolutely unable to make this conversion, so they must get EPA and DHA directly from the mother (DHA is particularly necessary for eye and brain development.)

Even if you, as the mother, are able to convert ALA to EPA and DHA, you need approximately 10 grams of ALA just to make 600 milligrams of EPA and 400 of DHA.

To put that into perspective, 1 tablespoon of ground flaxseed contains slightly less than 2 grams of ALA.

One tablespoon of flax oil, meanwhile, delivers 7 grams (one good way to incorporate that into your diet is by adding it into a smoothie).

It's also important to realize that as good for us as Omega 3 fats are, they do not work alone. Vitamin C, zinc, and magnesium are involved in the conversion of ALA to EPA and DHA.

If you are not consuming enough of those nutrients, your will not convert quite as efficiently (so, say, you might need 15 or 17 grams of ALA to make the quantities of EPA and DHA mentioned above.)

In your situation, I suggest taking an EPA/DHA supplement.

That doesn't mean you should stop eating ground flaxseeds, though -- they are a nutrition all-star!

August 9, 2008

You Ask, I Answer: Flaxseeds

I have been looking at the articles you've tagged with flaxseed and it looks like you wholeheartedly encourage the addition of ground flaxseed meal to foods.

However, I wonder if doing this is ultimately beneficial - as you point out, men at risk for prostate cancer should watch their consumption of ALA [alpha linolenic acid].

Additionally, omega-3 or not, adding fat to foods will increase the calories... for those watching their weight, is this really a smart decision?

On the other hand, as a vegan, I can attest to difficulty getting nutrients like vitamin B12.


Do you think that, for vegans, the addition of flax meal is a good idea (even with a diet that incorporates a lot of nuts [in particular, walnuts] and -for cooking- canola oil)?


-- Christine (last name unknown)
Via the blog

Keep in mind that most of the findings about high ALA intakes and prostate cancer risk mostly relate to flaxseed oil (which contains very high levels of ALA -- approximately twice that of fish oil, and certainly much more than a tablespoon ground flaxseed), not flaxseeds themselves.

It's also interesting to note that lignans -- the phytochemicals present in flaxseeds but not in flaxseed oil -- are believed to play a protective role against some cancers.

In any case, I stand by my suggestion of adding a tablespoon or two of ground flaxseed to one meal or snack every day.

It's worth stressing that the benefits of ground flaxseed far outweigh any caloric concerns.

If someone is interested in cutting calories, flaxseed should be at the absolute bottom of that totem pole, since two tablespoons -- which pack in a lot of nutrition -- only add up to 70 calories.

It is always important to keep the concept of "nutrient density" in mind.

In other words -- consider the caloric content of a food in relation to everything else it offers.

Those 70 calories in two tablespoons of flaxseed are keepers -- they contain a lot of vital nutrients not commonly found in a lot of other foods!

Instead of cutting out the flaxseed, have a few less bites of a less nutritious food eaten later in the day.

Trust me, you won't find too many other "real" foods that provide 4 grams of fiber in just 70 calories!

As far as veganism is concerned, if walnuts and canola oil are consumed on a regular basis, then there is a decent intake of ALA and there isn't a need to also consume ground flaxseeds.


That is certainly a minority we are talking about, since 98% of the United States population is not consuming the recommended amounts of Omega-3 fatty acids?

So, yes, you bet I am a proponent of adding ground flaxseed to foods.

It's, at the very least, a start for some people whose Omega-3 intake is currently at zero.

I am glad you asked this question, though, because it once again goes back to the idea that "more is not better."

ALA is a wonderful thing to have in the diet, but overdoing is not healthier than getting the necessary amounts.