Sunday, May 27, 2012
Two in One Day
Well, the last couple of months have been interesting here in my world. I started a new job, which turned out to be more of an adjustment than I'd anticipated. Oh, and I decided to try coming off one of my medications again. That worked really well until it didn't. I am in fact still trying to get over that little mistake. Lesson learned I guess, which is a bit of a disappointment, but right now I'm just busy trying to get things back to normal. That and trying not to feel fed up with being problematic.
Anyhow, on to other things. Through everything one thing that has remained constant has been my running. I might be feeling way too heavy, I might be feeling slow, and I may have had some bad runs, but at least I've still been getting out there. When I'm not in the right headspace for 5.30am starts and hardcore group training sessions it's good that I've been able to hang onto at least that.
A few weeks ago the squad ran up to Colonial Knob. My legs were shattered from the start and I crumbled on the stairs, eventually limping my way up to the Knob well behind everyone else, then running slowly back down with the stitch. I got in the car and drove home trying not to snivel and feeling quite demoralised. In that mindframe (and with my legs even more shattered) there was no way I was getting up to run even the short Xterra Woolshed run the next day. The squad reported back that both options were hard and horrid, so staying in bed didn't seem such a bad thing.
Since then I've had both good runs and bad runs, but I've been finding my legs haven't been recovering that quickly and that I've had to take a bit more rest as a result. I had a brilliant run up Transient, Highbury Fling and the Rollercoaster trails in Aro Valley, then had an ok run up Mt Victoria the next day. I followed that with a brilliant run up around Wadestown on a perfect autumn evening (of which there's been rather a large number this year). Unfortunately all those hills caught up with me when Duck had us running up nearly every flight of stairs in town on Wednesday night.
Thursday was a rest day, and my legs were exhausted. Duck and I had a session on Friday morning - yet another beautiful autumn morning. We mostly worked on my upper body - especially my shoulders, but there must have been just enough leg stuff to ensure that when I went out to run yesterday that I was still feeling tired. Oh well, nothing to be done and two runs to get under my belt.
8am Saturday morning saw the squad assembling at a calm, crisp Days Bay.
We ran a variation of Butterfly Creek, entering at the bus depot, and coming out at McKenzie Road. We ran (and walked) straight up over 200 metres, then it was down into a lovely flat to undulating section of bush trail that was even under foot and quite blissful. Unfortunately the downhill meant one last climb up again, although easier than the initial climb. From there it was down an at times steep trail down to McKenzie Rd, then a short road run back to Days Bay again and cups of hot tea.
The hills were hard, primarily due to my tired legs, but I had a blast running through the valley along the stream. The trails were in an excellent state and I finished feeling quite invigorated. Except of course that wasn't where things finished ...
Later that day I was on my way to Karori to take part in yet another Xterra run, this time the Starlight Run in the Makara mountain bike park. I was feeling quite nervous as this was my first nighttime trail run.
This year the Xterra crew were victims of their own success. Nearly 300 runners turned up, with registration running overtime. In the end those of us who had already registered walked up the road to the start, where we waited for stragglers. The long course eventually left, looking quite impressive as they all streamed up the four wheel drive trail, and then a few minutes later we short course runners were let loose.
My feelings about this run are mixed. Ulimtately, as a slow trail runner, I would not do this course again in this format. The trails just aren't wide enough for that number of runners. We short coursers started off running the same route as the long coursers, but turned sooner to loop back around. Unfortunately the long course was not sufficiently longer, and the gap between the two waves not long enough. After we'd run up the four wheel drive track, followed by a bit of a downhill, we turned onto a narrow and twisty single track. Almost immediately we were being passed by long course runners. I added a good ten minutes or so just moving to one side and slowing to let runners through. I was accompanied by a man with his young son and he was getting quite irate - almost to the point where if a passing runner had said the wrong thing I think he would have had a go at them. He wasn't exactly being encouraging of his son either and I wouldn't blame the kid if he never wanted to run again, but that's another story.
My problems were exacerbated by equipment issues. My headlamp wasn't bright enough and the torch I was supplementing it with wasn't much additional help. To add to that about halfway through my headlamp started falling down my forehead and hitting my glasses. I spent a few kilometres pushing it back up until I eventually just took it off and held it.
I can't be too hard on myself. Given the vertigo issues I'm having at the moment, my poor eyesight, and my general clumsiness I did something amazing just being out there at all. Even going over hard at one point didn't stop me. There were runners coming up behind me so I just got up and kept on running. I ran as much as I could, even when my running pace wasn't much faster than a walk. I tried not to let the constant sound of runners coming up behind me freak me out too much, and I tried not to freak out too much when I was running on my own with no one else around me.
By the time we got to Lazy Fern though I have to admit I was a little bit over it. The run was supposed to be 5 to 6km, but in the end was 8, which meant I ran 18k all up yesterday. No wonder I was a bit tired! I passed a couple of women with a young girl at a junction in the trail debating whether to take a shortcut back to the start.
I walked a fair bit of Lazy Fern, then in my eagerness to get back to the finish ran faster than I really should have back down the four wheel drive track to the finish. At the end I grabbed a cup of sports drink then extracted myself from a conversation with another runner acquaintance. By the time I'd walked back down to the car I was freezing. I cranked up the car heater and drove back to Brooklyn where I stopped for dinner. The shop had a gas heater going so I stood inches from it thawing out. By the time I got home it was raining fairly steadily.
So there it was, my first night run. Today my right hip flexor hates me, and last night I had the worst charlie horse in my right calf. Thankfully today's been horridly windy and wet, so hanging out on the sofa hasn't been a hardship. If I'm going to do a run like that again I'm going to have to get a better lamp, and I need to practice! Oh, and if I'm going to keep running up multiple big hills I'm going to have to lose some weight.
But first I have to hang on till the medication starts working properly again. Only about another week with any luck!
Thursday, April 12, 2012
A connection between my Addison's and Inflammation?
Ok, so this is talking about cortisol in the sense of the body becoming resistant to it, but I think there are interesting correlations. If the body's inability to use cortisol leads to inflammation then perhaps too low levels of cortisol could have a similar response. In other words, perhaps I need to up my medication when I'm injured after all.
Original post and podcast here.
Concrete evidence linking chronic stress to inflammation and modern disease
Chris Kresser: All right, so the first study is right in line with the April Best Your Stress Challenge, and if you haven’t heard of this, go check out my blog, ChrisKresser.com. You now, there are a lot of 30-day diet challenges. There’s the Whole30, and there’s the Personal Paleo Code, my program where we ask people to give the Paleo diet a try for 30 days and give it that chance to change their lives and make a big difference in their health. But I’ve talked a lot about the importance of stress management and improving stress tolerance and mitigating the impacts of the stress that we can’t get rid of on our life, so I thought it would be a good idea to spend April doing a 30-day Best Your Stress Challenge. So, the idea is to apply that same concept of a 30-day diet challenge to stress management, and I wrote a post about this a little while back, I think, on March 30 and offered some ideas for what people can do to manage their stress throughout the month of April and just to make a commitment and preferably a small, fairly manageable one because oftentimes we have a tendency to commit to more than we can do and then we don’t follow through, so just setting a small goal, like meditating for 10 minutes in the morning or doing a deep relaxation exercise every afternoon or taking a walk in the woods or on the beach — whatever it is that helps you manage your stress — and doing that throughout the whole month of April and seeing how that improves your health overall.
So, the other day, I saw a new study with the title Chronic stress, glucocorticoid receptor resistance, inflammation, and disease risk, and since I’ve been thinking a lot about stress and the effects of stress on disease, I thought it would be a good idea to talk a little bit about this study because it’s really interesting, and it takes our traditional concept of how stress contributes to disease and kinda turns it on its head. It’s some relatively new information. I’ve seen a few other studies with a similar theme, and if anything, it just reinforces what we’ve been talking about in terms of the connection between stress and disease and the importance of managing stress and either reducing the symptoms of a disease that we already have or helping to cure it entirely or preventing the risk of acquiring a new disease. So, stress is associated with just about every modern disease that you can name, from depression to cardiovascular disease to type 2 diabetes to autoimmune conditions like rheumatoid arthritis and Crohn’s disease and multiple sclerosis to upper respiratory infections and even the common cold. And up until pretty recently and still now, I think, most people think that stress causes disease by dysregulating the hypothalamic-pituitary-adrenal axis, but this notion that stress acts simply by elevating cortisol levels is becoming less and less likely, at least in the current scientific literature. So, what this new paper and other recent papers suggest is that it’s actually the sensitivity of cells or the target tissue to cortisol, not absolute levels of cortisol that’s most important. So, glucocorticoid resistance, which is a decrease in sensitivity of immune cells to glucocorticoid hormones like cortisol, makes it more difficult to shut off the inflammatory response. So, let me break that down. When you’re insulin resistant, you’re producing enough insulin, but your cells are resistant to the effects of insulin, so it’s like insulin’s knocking on the door, but nobody’s inside or whoever’s inside isn’t listening, so the door doesn’t get open, and insulin can’t perform its function. The same is true with leptin resistance, and there’s even thyroid hormone resistance where thyroid hormone can’t activate the cellular receptors for thyroid hormone, so even though there’s plenty of thyroid hormone circulating around, you experience all the signs and symptoms of hypothyroidism because thyroid hormone isn’t affecting the receptor.
So, this study and others like it suggest that there’s a similar phenomenon with cortisol resistance. So, it’s not high levels of cortisol, per se, that are contributing to an increased susceptibility of disease, but it’s instead the insensitivity of cellular receptors to cortisol that’s the problem, because one of cortisol’s jobs is to turn off the inflammatory response once it gets started. So, let’s say you catch a cold or you get a cut or you have some kind of injury or illness, and inflammation is the natural response to that. Inflammation is not all bad. In an acute setting, inflammation is what helps us to heal. The problem happens when inflammation doesn’t get turned off appropriately, and then it just kinda runs wild and you get chronic inflammation, and it’s that chronic inflammation that is a risk factor for disease, not the acute inflammation that helps us to heal. So, in a normal functioning person, what would happen is that you’d get a cold or you’d get some kind of injury or acute condition that causes inflammation, and then the glucocorticoids, like cortisol, are produced and they turn off the inflammatory response by activating the glucocorticoid receptors. So, what these researchers have found is that people who are under chronic stress, that doesn’t work right. The cortisol gets secreted, but it doesn’t activate the receptors, and then you get a runaway inflammatory response. And this has been shown in other studies. They’ve found that cortisol resistance is present in spouses of brain cancer patients, in parents of children with cancer, and in people that are very lonely, and all of those populations are known to be experiencing significant stress.
So, in this study, the researchers used, I think, a pretty ingenious model to demonstrate this effect. I mean, it’s well established that chronic stress increases the susceptibility to the common cold and upper respiratory infections, as I mentioned earlier. So, the researchers actually did two studies in one. The first one was meant to determine whether stress causes cortisol resistance and whether people with cortisol resistance are more likely to develop a common cold in the first place. And then the second one was meant to determine whether cortisol resistance could predict the amount of local inflammation in the nose, for example, in response to a viral infection. So what they did is they actually purposely infected people with a virus, a rhinovirus that causes the common cold and respiratory infection, and as expected in the first study, the results did show that exposure to stress increased cortisol resistance, and in the control group they found that exposure to an acute stressor was associated with white blood cell count, but in the group that was under chronic stress there was no association. So, in other words, what should happen is that when you’re exposed to a stressor, as I mentioned, cortisol should turn off the inflammatory response and reduce the white blood cell count, but that didn’t happen in people that were under chronic stress and had cortisol resistance.
In the second study, they found a correlation between cortisol resistance and the levels of various proinflammatory cytokines locally, like interleukin-6 and TNF-alpha. And then they also saw a decreased sensitivity of white blood cells to the inhibitory effects of cortisol, like we’ve been talking about. So, in other words, when you’re stressed out, the immune system cannot turn off the inflammatory response like it’s supposed to, and then you’re more likely not only to get sick in the first place, but you’re more likely to stay sick for longer because that inflammatory process doesn’t get inhibited. So, the interesting thing also about this study is that there was no correlation between actual cortisol levels, like circulating cortisol levels, and disease risk or inflammation. So, it seems like it’s the cellular receptivity to cortisol, the sensitivity of the receptors to the actions of cortisol, that’s the most important, rather than the circulating levels of cortisol themselves. So, I thought that was pretty interesting, and it may not change things from from an end-user perspective too much because the idea is still that you want to take steps to manage your stress, but for me, every study I see like this is just another affirmation of the importance of stress management, and I see it in my work with my patients, I see it in my own life and my own experience, and people might be getting tired of hearing me talk about it, but I’m gonna keep talking about it because I thinks it’s kinda the elephant in the room in a lot of cases. In my patient population, I think I can pretty safely say that people who are taking active steps to manage their stress have significantly better clinical outcomes than people who don’t, and I just think it’s a much bigger contributor to the whole disease process than most of us really realize.
Steve Wright: That’s pretty insightful, man. And I thinks it’s awesome that we’re getting more data on what the problem is because you do hear a lot about, well, you’re not totally stressed out or you can go do another CrossFit workout as long as your cortisol isn’t over 20 or something like that.
Chris Kresser: Yeah.
Steve Wright: So, this is cool to have a new model. Now, do you know if, for instance, because we’re a little bit better at measuring insulin resistance and leptin resistance, are the three correlated? So, if I’m insulin resistant, I’m likely leptin resistant or I am leptin resistant. Am I also cortisol resistant then?
Chris Kresser: I don’t know what the exact relationship between all of those would be, but I certainly think that HPA axis dysregulation can contribute in some way to leptin and insulin resistance and probably vice versa. I wish there was a way of testing for cortisol resistance in the commercial setting. I don’t think there is. I think it’s only available in research settings. But what’s interesting about this study is that I think, like you said, the idea that we can just run an adrenal stress index or any kind of hormone profile where we measure cortisol, and if the person has normal cortisol we say: OK, you’re clear to do, you know, five CrossFit workouts a week. We can’t really make that assumption because that test is not gonna show cortisol resistance in the white blood cells. I think ultimately just paying attention to symptoms is a pretty good guide because if you have this cortisol resistance pattern, you’re gonna have more difficulty recovering from workouts because that inflammatory response won’t get turned off. I mean, working out, especially lifting weights, but doing any kind of intense workout is basically like a controlled stimulation of inflammation. You’re breaking down tissue when you lift weights. You’re breaking down your muscle tissue, and the idea is that when it builds back, it builds back bigger and more able to deal with the next stressor, in that case, lifting weights. So, that works well if you give the body long enough to recover, if you give the body long enough to turn off that inflammation and then to start the anabolic process rather than the catabolic process of building the tissue back up. And if you’re a healthy person with no significant stress levels and you’re not dealing with any chronic inflammatory condition, that should happen fairly quickly and commensurately with the amount of exercise that you did. But if you’re dealing with chronic stress and you have cortisol resistance, here’s what’s gonna happen: You’ll do the intense workout, you break your tissue down, which is what happens and is the whole point, but the recovery process will be very, very slow, and the inflammation will persist. So, instead of taking one day or maybe two days to get back to baseline and then start building new tissue, stronger tissue, you’ll take several days to get back to baseline, or maybe you really never fully do get back to baseline. And then you do another intense workout, so then you break down more tissue and cause more inflammation, and then it’s a downhill slide from there. And I see this a lot in the CrossFit community, people who come to me who have been doing CrossFit. And this is not all people who do CrossFit. I’m talking about people who are under significant stress and who may be dealing with a chronic health challenge. But the fact is most of us in this modern world are under stress, and some of us are better at managing it than others, and some of us pay more attention to that than others, but I think this is a very real phenomenon and it’s not just affecting people who have kids with cancer or spouses with cancer or people who are socially isolated. It’s affecting all of us to some degree or another.
Steve Wright: Way to wrap that up. I think it’s important to keep learning about it.
Wednesday, April 11, 2012
Easter Adventures and More Medical Pondering
Wednesday, March 28, 2012
So - about that injury
Sunday, February 26, 2012
Tussock Traverse - the Reprise
(Sorry for the sideways photo - I couldn't figure out how to turn it around. This photo doesn't look steep but was in fact near the top of a killer two kilometre climb on a 4WD track).
Of course what went down eventually had to go back up, and I found myself climbing more stairs. I even overtook a male runner! The last 500 metres to a kilometre were back on an open gravel path, and uphill to the Chateau. I was convinced my Squad crew were going to be right there cheering me on, so I made myself stand upright, run and smile, as if I was fresh and feeling great.