Gluten-Free January Survey Data, Part II: Health Effects of a Gluten-Free Diet

GFJ participants chose between three diet styles: a simple gluten-free diet; a "paleo light" diet diet that eliminated sugar and industrial seed (vegetable) oils in addition to gluten; and a "paleo full monty" diet that only included categories of food that would have been available to our pre-agricultural ancestors. The data in this post represent the simple gluten-free diet group, and do not represent the other two, which I'll analyze separately.

To get the data I'll be presenting below, first I excluded participants who stated on the survey that they did not adhere to the diet. Next, I excluded participants who were gluten-free before January, because they would presumably not have experienced a change from continuing to avoid gluten. That left us with 53 participants.

For each of these graphs, the vertical axis represents the number of participants in each category. They won't necessarily add up to 53, for several reasons. The most common reason is that for the questions asking about changes in health conditions, I didn't include responses from people who didn't have the condition in question at baseline because there was nothing to change.

Question #1: What is your overall opinion of the effect of gluten free January on you?

Participants had a very positive experience with the gluten-free diet. Not one person reported a negative overall experience.

Question #2: Did you note a weight change at the end of gluten free January?

And here are the data for people who described themselves as overweight at baseline:

Two-thirds of people who were overweight at baseline lost weight, and only one person out of 37 gained weight. That is striking. A number of people didn't weigh themselves, which is why the numbers only add up to 37.

Question #3: Before January 2011, did you have a problem with intestinal transit (frequent constipation or diarrhea)? If so, did your symptoms change during the month of January?


Responses are heavily weighted toward improvement, although there were a few instances where transit worsened. Transit problems are one of the most common manifestations of gluten sensitivity.

Question #4: Before January 2011, did you have frequent digestive discomfort (pain, bloating, etc.)? If so, did your symptoms change during the month of January?


Digestive discomfort was common, and the gluten-free diet improved it in nearly everyone who had it at baseline. I find this really impressive.

Question #5: Before January 2011, did you have acid reflux? If so, did your symptoms change during the month of January?

Acid reflux responded well to a gluten-free diet.

Question #6: Before January 2011, did you have a problem with tiredness/lethargy? If so, did your symptoms change during the month of January?
Lethargy was common and generally improved in people who avoided gluten. This doesn't surprise me at all. The recent controlled gluten study in irritable bowel syndrome patients found that lethargy was the most reliable consequence of eating gluten that they measured (1, 2). That has also been my personal experience.

Question #7: Before January 2011, did you have a problem with anxiety? If so, did your symptoms change during the month of January?

Anxiety tended to improve in most participants who started with it.

Question #8: Before January 2011, did you have a problem with an autoimmune or inflammatory condition? If so, did your symptoms change during the month of January?

Autoimmune and inflammatory conditions tended to improve in the gluten-free group, although one person experienced a worsening of symptoms.

Question #9: If you ate gluten again or did a gluten challenge after gluten free January, what was the effect?

Just under half of participants experienced moderate or significant negative symptoms when they re-introduced gluten at the end of the month. Two people felt better after re-introducing gluten.


Conclusion

I find these results striking. Participants overwhelmingly improved in every health category we measured. Although the data may have been somewhat biased due to the 53% response rate, it's indisputable that a large number of participants, probably the majority, benefited from avoiding gluten for a month. At some point, we're going to compile some of the comments people left in the survey, which were overwhelmingly positive. Here's a typical comment in response to the question " In your own words, how would you describe your January 2011 experience" (used with permission):

Amazing! I would recommend the experiment to anyone. I felt completely more alert, and less bloated. When I ate some gluten at the close of the experiment, I felt gross, bloated, and lethargic.

I think it's worth mentioning that some participants also eliminated other starches, particularly refined starches. Judging by the comments, the diet was probably lower in carbohydrate for a number of participants. We may try to assess that next year.

i wish i could slip on those warm socks, curl up on the sofa and read all my design magazines i haven't had time to catch up on (okay, and maybe one trashy US weekly)....instead i am running around like a crazy woman trying to play catch up (the time change always throws us off)!  i hope y'all are having a happy monday!!!

*images courtesy to sheepish knit crochet, black eiffel, katie fine, design addict mom, lonny, the diversion project

Happy Pi Day!

Happy Pi Day!

Today is March 14th, or 3/14, and in geek culture we celebrate today as Pi day. Usually by wearing Pi T-shirts, baking pies, ordering pizza, and other such things.

I'm sadly too busy with deadlines and travel to cook, and don't own any Pi t-shirts, so instead I thought it would be fun to post some incredibly corny filk, complete with wonderfully punny pictures. Enjoy!

(cross-posted to Scientopia)

The Social Network

Due to circumstances beyond my control (a long plane ride), I watched "The Social Network". I didn't really want to watch it, but also sort of did, kind of like a train wreck. I also wanted to see sudo*-Matt Welsh's cameo teaching Operating Systems.

I was pleased that Hollywood got some of the technobabble correct (apache with a SQL backend), and I loved that the closeup of Mark's laptop showed it running *nix. I also thought it was cute they re-branded the iBook laptop as "Book".  

However, I was greatly displeased with how the film portrayed women. By my count, there was only one female character who was not: a flake, a flirt, a drunk, a girlfriend, or crazy - and she was a lawyer with hardly any personality depth. Why were there no female engineers, or CS majors? Or, heck, I'd even take an Art History major. Just somebody with some brains to accompany the legs.

I was also displeased with how Mark Zuckerberg was portrayed. I don't know the real Mark, but the director seemed really dedicated to employing the geek-with-zero-social-interaction-skills trope. Couldn't the actor have smiled occasionally? Been somewhat friendly now and then?

So, Hollywood, your scorecard is: B+ for suspending my geek disbelief, but an F for perpetuating stereotypes.

---

(*) Pun intended! 

Kit Heath Minimalist Fashion Trend Alert

This seasons catwalks have seen many designers really go for the minimalist look against last seasons busier floral explosions. Whites, pastels, breezy silks and earthy shapes are clearly a theme for this coming summer, along with just enough structure to demand its place upon the catwalk.

Needless to say floral patterns are here to stay for a little while longer, but the top line designers such as Calvin Klein and Alexander Wang have introduced a minimalist theme into this coming season with their tailoring, which have little or no pattern prints amongst these collections. 

The difficulty for the fashionista is to decide on how to accessorise?
How do you accessorise an outfit designed to be sleek and edgy without overwhelming the effect with over baring, fussy jewellery?
But on the other hand how do you stop a contemporary design from becoming just a dull and staid bit of cloth?  

The Kit Heath spring 2011 collection features designs which will gently add that little touch of finishing required to make an outfit complete. The summery blue hues and delicate whites on tactile solid sterling silver will complement these designs perfectly. Not overwhelming the overall look, allowing both the jewellery and the clothes to maintain their effect.


Contemporary, clean and crisp designs from the Kit Heath Spring 2011 collection include Grecian White Jade Stone Ring and the Blue Jade Oasis Pebble Necklace. 

To find out more about this collection please email Kit Heath and we will get back to you or visit www.kitheath.com.

ENJOY!