Search

Site Search

Athlete Search

WOD Search

Photo Search

Additional References
Whiteboard

 

 

 

Athlete Profiles
  • A (3)
  • AWOL (3)
  • B (8)
  • C (2)
  • F (3)
  • H (1)
  • J (3)
  • K (4)
  • L (1)
  • M (2)
  • P (3)
  • R (1)
  • S (5)
  • T (1)
  • W (3)
  • Z (1)

New Feature Post: Behind the Champion with Mr. Augustine

Check out the epic interview here.


Entries in mel (23)

Mel's Musings Episode IV: Omega-3 - What it is and what it isn't

Omega-3 Fatty Acids are Important for Health

So if you haven’t been keeping up with major health trends, let’s first discuss why omega-3 fatty acids are important.  There are two main types of polyunsaturated fats, omega-3 (“n-3” from now on), and omega-6 (“n-6”).  (We won’t be discussing omega-7 or omega-9 fatty acids today.)

Both n-6 and n-3 fatty acids are important and essential to humans (“essential” meaning we must eat them, because we cannot make them).  A balance of these fatty acids is recommended, because they exert opposite effects physiologically.  n-6 fatty acids are pro-inflammatory, and n-3 fatty acids are anti-inflammatory.  Pro-inflammatory sounds bad, but we do need inflammation for things, so n-6 fatty acids have their place.  But too much inflammation can lead to various health problems.  The recommended dietary ratio of n-6 to n-3 is generally considered to be 1:1 or 2:1.  Most Americans are believed to have ratios much more weighted toward n-6, on the order of 10:1 or 20:1.  This is largely due to the fact that we consume a lot of nuts, seeds, and grains (rich in n-6), and not as much fish (rich in n-3).  There are additional reasons, including the fact that most of our dietary meat sources are raised on grain instead of grass.  As they say, you are what you eat.

The underlying premise here is that, unless you’re an Inuit and eating fish every day, you likely need a better balance, so you should consume more n-3 fatty acids.  So how do you get more omega-3?  Let’s take the various sources one by one: in fish, in other meats, in flax, and Jacob’s favorite, in supplement form.

Omega-3 in Fish

Fish have a lot of n-3.  But not all fish.  Cold water fish.  Why cold water?  Partly because they make a lot of fat – they need to keep warm in that cold water.  I’m only half-joking.  Partly because of their diet.  If you go to the bottom of the food chain, algae are the original source of n-3.  If you’re a sardine, and you eat algae, you get n-3.  If you’re a tuna, and you eat a sardine that has eaten the algae, you get n-3.  On and on, up the food chain.

Some of the best sources of n-3 in fish are: mackerel, herring, trout, salmon, tuna.  Most of the more common white fish (grouper, flounder, halibut, cod) do not have much n-3.

Omega-3 in Meat: A Red Herring

Let’s focus on beef for now.  You may have heard that grass-fed beef has a better n-3 profile than grain-fed beef, which would make sense given what we know about the n-3 content in grass vs. corn.[1]

Grass-fed cattle can have n-6:n-3 ratios from 2 to 6 times better than their grain-fed counterparts

The ratios in the table above are striking.  But focusing on the ratios instead of the total quantity can be misleading.  An ounce of grain-fed beef has 167 mg of n-6, while an ounce of soybean oil has over 14,000 mg.  (Think of this next time you slather on the salad dressing…yes, Chris, I’ll wait while you go verify that your favorite ranch dressing’s main ingredient is soybean oil…)

Similarly, grass-fed beef has around 100 mg of n-3 per ounce.  An ounce of tuna fish can have as much as 780 mg of n-3.  So yes, you are getting a better ratio of n-3/6.  But 100 mg is not very much.  Beef is simply not a rich source of polyunsaturated fatty acids (be they n-3 or n-6)!  You’d be better off to just eat good ole American grain-fed beef and then supplementing with a can of tuna fish every now and then.

Omega-3 in Flax

Plenty of n-3 in flax.  But not all n-3’s are created equal.  You want EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid), which can be used by the human body right away.  Flax contains ALA (alpha-linolenic acid), which is n-3, but can’t be used by the human body in this form.  It first must be converted to DHA or EPA, and sadly, the conversion in humans is low, on the order of 5-10% (depending on the study)[2],[3].

So, flax – or any source of ALA for that matter – will not supply you with your n-3 needs.

Omega-3 in Supplements

Omega-3 is not the same thing as fish oil.  Why not?  Fish oil is just that – fat from fish, in oil form.  It could be any fish.  It could be any fat.  If you want omega-3, you must look at n-3 content – and even then, it needs to be EPA or DHA content (not ALA).  Flax seed oil supplements, as you might guess, are next to worthless.

Red Krill Oil: Marketing at its Best

I have been trying to get my parents on the n-3 supplement train.  And they listen…sort of.  As I get older, I realize it’s very hard to tell your parents…well, anything.  Maybe because they were the smartest people in the living room for a long time.  Maybe because it’s hard to take advice from those closest to us, our friends and family.

Anyway, my mom says, “Yeah, we take fish oil.  But it’s better – it’s red krill oil.”  So I look it up, and sure enough, it is made from red krill.  And the n-3 content?  About 100 mg per capsule.  (As a baseline, I take well over 1 gram of n-3 daily.)  So, I tell my mom she would need to take a dozen of these pills just to get the effects I’m getting from 1 super-concentrated fish oil pill.  “But it’s red krill…”  Sigh.

The Horror of Light Tuna

Also at my parents recently, they were making sandwiches.  Tuna fish sandwiches.  I’m excited, because I like tuna fish and this is a food I can also get behind nutritionally, given its high content of n-3.  Then I grab the can – it says “light tuna”.  Huh, wonder what that means?  Um, it means they took out all the fat, including the n-3’s that made it healthy…and tasty![4]

Sorry, Charlie. With only 0.5g total fat, “Light” tuna just doesn’t have much omega-3 content.

I guess it’s not a total loss – there is still fish flesh (protein) in there.  But this is what we’ve come to as a society – so paranoid about ingesting fat that we eliminate the best kind of fat from a can of tuna fish.

Summary

Sushi – good, and good for you!

Don’t simply take my word for it.  Zone diet pioneer, Dr. Barry Sears, said of fish oil, “It’s as close to a miracle drug as I’ll ever see in my lifetime.”  So, eat fish and take your fish oil!  Or, as I hopefully illustrated in this article, that things are a little more complicated: eat fatty fish, and take high-dose EPA- and DHA-containing fish oil.

 


[1] Daley, et. al., A review of fatty acid profiles and antioxidant content in grass-fed and grain-fed beef. Nutr J. 2010. Vol 9 No. 10

[2] Gerster, Can adults adequately convert alpha-linoleic acid (18:3n-3) to eicosapentaenoic acid (20:5n-3) and docosahexaenoic acid (22:6n-3)? Int J Vitam Nutr Res. 1998;68(3):159-73.

[3] http://www.dhaomega3.org/Overview/Conversion-Efficiency-of-ALA-to-DHA-in-Humans (multiple studies cited).

[4] Nutritional review: Light tuna generally contains 0.2g omega-3 per 100g serving.  Albacore or yellowfin tuna can contain 5-10 times as much.

Quote of the Week vol. 209

It has been a long time since Mel came out with one of his periodical guest posts. His new one will be posted tomorrow at 5 pm. It is about fat, and other synonyms.


If you were up here earlier, I had a different quote from Bill Self. But I hate Kansas basketball, and I just heard this one from Carl Paoli as I was watching a video that I like better.

"So many people say 'Leave your ego at the door'... but if you don't have your ego, you can't actually make decisions. Your ego is the axis on which your moral compass spins. You just can't become your ego."

- Carl Paoli. Barbell Shrugged podcast.

PSA from Mel: PORCH Durham

Our favorite Tar Heel, Mel, emailed me with some info about the PORCH Durham program he referred to in the Whiteboard/Sidebar this morning. It looks like a good project, and the fact that Mrs. Mel isa co-founder makes it even cooler.

Anyway, as you can read in Mel's comment in the Whiteboard, PORCH Durham is on the list to receive a $25,000 grant from State Farm. How do they get this, you ask? Simply by being one of the top-40 vote-getters. And this is where we come in.

Vote here.

Or vote here.

Or vote here.

But definitely not here.

Three of the four links above will take you to a place where we can vote daily until August 25. The other link is what Mel goes to sleep thinking about every night.

But for real though, take 35 seconds out of your day to make this happen. $25,000 is a crap-ton of money, and definitely worth whatever time it takes to click the vote button.

Now Live: Champions Club Summer 2017 Graph of Ability (or lack thereof)

If you are new around, we usually do this about every other Summer. The Graph was originally conceived in the Old Weight Room where Brian, myself, Gabe O'Neil, and Scott Gwisdalla were arguing about how much athleticism could override a bad personality, and vis versa. In the Summer 2011 (Fieldhouse), Murley surprised us all and brought in a full graph ready to go. It was repeated in 2013, 2015, and now here in Summer 2017.

It is meant to be read like a normal graph in math class. The X-axis represents one's personality and the Y-axis represents athletic ability.

It is also meant to be in good fun. So when Crawford sees his name down by the bottom-left, he will still get defensive but will laugh because, again, it's just something to cause a little friendly debate. New names for this year's graph include: Ashley Fry, Arlene and Reggie, Avery, David Sap, Kenny, Lindsey Eason, and Mel.

Enjoy!

As expected, Sap is pissed...

Goon and Goblin Resurgence 6/13

This week's poll actually doesn't from Jacob the goon or Matt Marathon Goblin, but Mel instead. He piggybacked off last week's poll:

Corollary question - would you rather have your team be awesome but lose to its greatest rival, or have a mediocre season but still win the rivalry game? Worthy of its own poll? ;)

- Mel


Mel's Beast Mode + Weekend Schedule Reminder

Just a reminder that this weekend's schedule is back to normal.

Saturday

10 am (mobility/make-up workout)

 

Sunday

12 noon (team workout)

1 pm (babies)


If you notice the sidebar, Mel, our favorite fan from North Carolina, recently achieved a longtime goal of completing every CrossFit.com Hero workout. Here are the highlights from his final one last week.

Last Hero WOD (Hollywood) 2017 from Mel on Vimeo.

Great job Mel Man!

Mel's Musings Episode II: Your Total Cholesterol Reading, Your Fitbit, and Other Worthless Items

Chris has graciously provided me a soapbox.  A place to rant about all the things in the world that I think are worthless: misguided, misinformed, or just plain stupid.  I actually keep a running list of these things.  The list is titled, “When Conventional Wisdom is Not Wise”, which I alluded to in Episode I.  Here are some of my current hot buttons.

Total Cholesterol as a Marker of Cardiovascular Disease

Everyone knows they need to watch their cholesterol number, right?  Wrong.  Total cholesterol is a very poor biomarker.

The origins of cholesterol as a marker go back into the 1970’s, with Ancel Keys and the “Seven Countries Study”, the thesis of which is that blood cholesterol level is a risk factor for heart attack.  Long story short, here – the study had major flaws, and total cholesterol is not as predictive as we used to think.

Your physician may even tell you as much.  He will say, “Well, we really care more about your HDL (high density lipoprotein, or ‘good’ cholesterol) and LDL (low density lipoprotein, or ‘bad’ cholesterol) levels.”  And of course there’s also VLDL (very low density lipoprotein) and triglycerides.  But it doesn’t stop there.  Hip doctors (well-read doctors, not orthopods) now look at ratios, such as the ratio of total cholesterol to HDL, LDL to HDL, or trigylcerides to HDL.

These are admittedly better measurements (i.e., they have higher predictive value).  And since most lipid panels will break these out now, knowing your total cholesterol number is meaningless.

You want to see your physician with a blank look on his face?  Ask him if your levels of C-reactive protein (a marker of inflammation, and perhaps a better marker of cardiovascular disease than cholesterol) are elevated.  He will either think you are grossly overeducated, or that you are a pharmaceutical rep about to pitch him something.

Too much of a good thing?  HDL levels and all-cause mortality shows levels exceeding 70 as being less than ideal. [1]

Total Activity as a Marker of Fitness

Another worthless item is the Fitbit[2].  You should go return this Christmas present before it’s too late and the store won’t take it back.  Hurry, it’s February!

Using a Fitbit is a complete waste of time, energy, and money.  “But Mel, people can achieve ‘fitness’ this way!”  No.  People may be able to find some semblance of “wellness”, but they will not approach “fitness”.  Yes, Fitbits will get people moving.  Getting out there, counting their steps, logging their miles, etc.  (Until they stop doing this, 3 months later…)  But in any case, steps and miles are not intensity.  Fitbit rewards volume and duration, not intensity.

Fitbits may get you to Wellness.  But to get to Fitness, you’re going to need something more[3].

That is the answer for those of us who drink the Kool-Aid, anyway.  But studies support the claim that fitness wearables don’t help people lose weight any better than other techniques, “Devices that monitor and provide feedback on physical activity may not offer an advantage over standard behavioral weight-loss approaches.” [4]

Anecdotally, these devices do work for some people.  Why is this?  Is it simply the reminder – “Time to get moving, Faust!”  Perhaps.  I actually think the biggest advantage is the social aspect that Fitbit has intentionally cultivated.  People love to share their progress, and people love to compete.  Did you get more steps today than your sister, your brother, or your husband?

To me, this sounds an awful lot like “community”.  Or back before that was such a CrossFit buzzword, “friends”.  Why do people like to work out with friends?  Camaraderie, sure.  But there’s more than just that.  How about accountability?  On the days you don’t want to go to the gym, you might be pushed to go anyway, because you know someone is waiting for you.  Someone with whom you can compete.

So yes, the Fitbit may be better than nothing – if it can increase the sense of accountability to exercise.  But if you already train with a group of friends, or you have a dedicated workout partner, or you’re just self-motivated, you’ve already checked off this box.

Goring Other Sacred Cows[5]

So what else shall we tackle?  Here are some other items that, in my view, are just “silly bullshit” (can’t seem to get through an article without quoting Rippetoe – his article of the same title should be required reading, and was likely my inspiration anyway[6]), to wit:

  • The continued efforts of the popular press, the USDA, and dieticians in general to demonize fat, while they look the other way on the health problems associated with sugar.  For instance, at my kids’ public school, you can’t get whole milk, but you can certainly find chocolate and strawberry milk (low fat, of course).
  • Squatting below parallel is bad for your knees.  If you still get this comment from your friends who don’t work out, send them this clip of Boz: https://www.youtube.com/watch?v=sSSkNn2P2B4.           
  • Eggs are healthier if you don’t eat the yolk.  I went to a Subway for breakfast once.  The lady asked if I wanted my breakfast sandwich with “white egg” or “yellow egg”.  I asked, in pseudo-naiveté, “What’s the difference?”  She said – with a straight face, mind you – “The white egg is healthier.”  Although I wanted to launch into a rant about how the yolk contains 90% of the calcium, iron, phosphorus, zinc, and B-vitamins – not to mention 100% of Vitamins A, E, D, K, omega-3 fatty acids, and carotenoids[7] – I bit my tongue and said, “I’ll take the yellow egg.”
  • The fact that my children are strongly encouraged (read, “need”) to have a water bottle on them at all times, including at school (drinking fountains), at basketball practice (ditto), and on a 1-hour hike with the Cub Scouts. 
  • Red meat is bad for you, because:
    • Too much fat[8]
    • Too much saturated fat[9]
    • Too much iron (!)[10]
  • And something fellow CrossFitters should appreciate, this sign, from a hotel gym (underline mine)…

When the going gets tough, maybe we should just quit.

There are so many things we should care about, so many things we need to pay attention to.  Don’t let yourself fall into the trap of caring about things that are worthless.

 


[1] Ko, et. al., High-density lipoprotein cholesterol and cause-specific mortality in individuals without previous cardiovascular conditions. JACC. 2016; Vol 68 No. 19 2073-2083.

[2] Or actually any fitness “wearable”: Jawbone, Garmin, Misfit, etc.

[3] Glassman, What is Fitness?, CrossFit Journal – October 2002.

[4] Jakicic, et. al., Effect of wearable technology combined with a lifestyle intervention on long-term weight loss: The IDEA Randomized Clinical Trial. JAMA 2016; 316(11):1161-1171.

[5] And mixing metaphors, apparently.

[6] Rippetoe, Silly Bullshit, CrossFit Journal – Issue 59, July 2007.

[7] Source: USDA.

[8] Mozaffarian, et. al., The 2015 Dietary Guidelines – Lifting the Ban on Total Dietary Fat. JAMA 2015; 313(24):2421-2422.

[9] Siri-Tarino, et. al., Meta-analysis of prospective cohort studies evaluating the association of saturated fat with cardiovascular disease. Am J Clin Nutr 2010 March; 91(3):535-546.

[10] Seriously.  In researching this article, someone out in Internet-land cited this as a reason to avoid red meat.