Paleodyssey

Toward an evolution-informed life

Miscellania

  • Like dark, dark chocolate? I can’t stand anything less than 85% anymore. I just bought 12 bars of Lindt 90% for $6.00 at a Lindt outlet. Unlike most chocolate bars, these are free of soy lecithin.
  • Vitamin D3 is fat soluble, so taking it in dry pill form doesn’t do much good unless you also take it with fat, such as a glug of olive oil. Unfortunately, most D3 gel caps are made with soybean or other industrial seed oils. There isn’t a lot there (so if you can’t get anything else, definitely supplement with D3 anyway if you don’t get enough sun), but I try to avoid them whenever possible. This kind is pretty much crap free.

Long Term Review: Merrell Barefoot Tough Glove

Aside from diet and exercise, one of the big ways that an evolutionary way of looking at daily life has influenced me is footwear. The whole barefoot running movement has a lot of overlap with paleo, since both seek to roll back problematic modern Western approaches to health by looking at how our distance ancestors did things. I’m not really a runner, but the idea of making changes to footwear makes good sense to me.

Modern shoes suck. They suck a lot. A generic modern shoe lifts your heels up, prevents you from striding in a natural manner, disrupts balance, and prevents most proprioceptive feedback to your feet from the surface they are in contact with. Our ancestors walked around barefoot or in the kind of handmade shoes worn by Otzi, the well preserved neolithic human found in Switzerland. “Primitive” shoes like that provide simple protection for feet without modifying gait and without attempting to provide “support” to the arches that, over time, weaken the feet—as any physical supportive device must do. It is only relatively recently that people in most societies began wearing the awkward things we think of nowadays as shoes. (Of course, things are worse for women. I really feel for the women I see tottering around on their toes looking “stylish.” Ack!)

Over the past year, I’ve been lucky enough to be able to transition away from crappy Western shoes. When I can, I go barefoot. The rest of the time, I wear minimalist shoes whenever possible. I own a pair of black Vibram Fivefinger KSO Trek toe shoes. Those are wonderful in many situations, but when I don’t want to look like I have weird monkey feet, I wear Merrell Barefoots. I have a pair of Merrell Trail Gloves and a pair of brown Tough Gloves. I’ll talk about the Tough Gloves here.

Merrell Barefoot Tough Glove

Work for me is usually business casual. Since my job sometimes involves physical training (teaching staff in schools, hospitals, residential programs, and other facilities how to safely work with individuals with disabilities who sometimes become agitated and aggressive) it makes sense for me to have a pair of shoes that look businesslike but also a bit “sporty.” The Tough Gloves, with their leather upper, fit that description very well. They are less casual than sneakers and less formal than men’s dress shoes. They do have a semi-subtle Merrell logo on the side, which I don’t like but can live with. The back of the shoe has a loop that you can crook a finger into in order to make them easier to pull on. In a business formal environment, they would definitely not pass.

The Tough Gloves are minimalist “zero drop” shoes. That means the sole is relatively thin and the shoe doesn’t raise your heel any higher than the forefoot, so your gait is similar to what it would be if you were not wearing shoes. There is no support per se, although the sole is not flat—it hugs the contour of the arch of your foot. They are astonishingly light and flexible. The upper is thin but sturdy leather that provide some protection to the foot. (Not as much as regular leather shoes. If someone steps on your foot, you will really feel it.) The sole is made by Vibram (the same folks who make Five Fingers). It provides excellent traction while remaining very thin and providing fairly good ground feel. The back of the shoe hugs your heel and the middle is fairly tight to keep the shoe from sliding around. The front of the shoe is very wide, allowing your toes to splay in the same way they would if you were barefoot. I think that’s a good approach to keeping the shoe on the foot without inhibiting the front part of the foot from doing what it’s designed to do.

Sole

All of these features allow a natural walking gait. Walking in these things is very different than in “normal” shoes. I can feel the ground. If I plod along on a hard surface such as concrete or pavement, banging my heels into the ground, that means that it hurts a little to walk. Because of that, I naturally walk differently. My overall walking posture is improved, and the achey back I sometimes used to get is gone.

My balance is much better in these than in “normal” shoes. Really, I feel like freaking Spiderman. I am much more graceful in these things than in regular shoes. Compared to barefoot, I have better traction and, while I do need to be more aware of what I’m stepping on than with regular shoes, I can walk confidently on almost any surface without worrying about broken glass, small rocks, or other things that I would otherwise have to be very careful about. I find myself naturally walking on the tops of curbs, on rocks, and other terrain simply because I can. They are also great for running in, provided that you use a forefoot or mid-foot landing stride. Slamming down on your heels (which is not what your feet are designed to do) is not a good idea. They have plenty of traction for most surfaces, although they can be kind of squeaky on freshly waxed tile.

I have now had these for nearly a year, wearing them very frequently. Other than getting a bit scuffed up (unavoidable with leather), there are no significant signs of wear. I haven’t even had to replace the laces. They take shoe polish just fine. They are lasting better than a regular pair of men’s shoes would for me.

Are they expensive? Yes, they are. They list for $120, which is more than I am accustomed to spend on a shoe. If they were wearing poorly, I would regret spending that much. As it is, I expect to get another year out of them, which makes them cheaper than a basic pair of regular rubber soled men’s shoes.

The only bad part is when I have to go back to men’s formal shoes. When I do that now, I feel like I am being forced to walk on a weirdly unbalanced forward-tilted surface. The shoes feel clunky and I imagine that I am clomping around like Frankenstein’s monster in one of those bad old movies. I am much more clumsy and things start to hurt. At some point I’ll find an alternative for that situation, but for now these work just fine most of the time.

Strongly recommended.

Vitamin D and vision

Vitamin D has been found to reduce the effects of aging on visual acuity in mice and to improve the vision of older mice significantly.

Of course, mice are not tiny furry humans, so these results may or may not mean anything for other species. However, I personally find that my 48 year eyes began to work a lot better a couple of years ago when I began transitioning to a paleo diet and supplementing with vitamin D3. At the time, I’d been putting off seeing an ophthalmologist and getting glasses to correct the eyestrain and decreased visual acuity I was experiencing. In particular, I was finding that if I focused at a short distance for a few minutes, my eyes would take several minutes to adjust to longer distances. I almost failed a vision test when renewing my driver’s license because I made the mistake of reading on my iPhone while waiting for the test. My eyes didn’t have enough time to adapt to the further distance.

About a month after starting to take D3 (4,000 IU per day, except when I get a lot of sun), I was very surprised to notice that the slowness to adapt to distance changes was no longer happening. It seemed as if my corneas were now more flexible (corneas naturally get harder with age). While I still have a little trouble with reading small type, I continue not to need glasses and have no unusual eyestrain or blurring. I have not had my visual acuity or night vision tested, but I am convinced that they are better than they were.

That’s one of the many unexpected side benefits of taking an evolutionary perspective on personal health.

In the press recently

Tara Parker Pope has an article in the New York Times Magazine called The Fat Trap about how people who are very overweight are different from the rest of us. They can lose some weight—sometimes a lot of weight—but research suggests that they usually gain it back. Comprehensive, life-changing weight loss is impossible for most people, she concludes.

At the Atlantic, pro blogger Ta-Nehisi Coates references that article and comments that he himself has lost a bunch of weight, but done it slowly over eight years or so.

Obviously I wish this had happened faster and smoother. But the upshot of taking the long way is that I’ve learned a lot about how to negotiate  world where, at almost every step, cheap high calorie food is at the ready. You can’t get that understanding in a lab and you’re unlikely to get if your trying to burn of 3-4 pounds a week. That sounds like masochism.

Megan McArdle, another Atlantic blogger (who had a dustup a few months ago in comments on her blog over the issue of grains with paleo hero Dr. Kurt Harris), responds to Coates’ blog post in What Do We Really Know About Losing Weight? Her main point is that it’s very hard to study weight loss over the long term, because you can’t get a group of participants to stay on one diet, dutifully reporting everything they eat, for many consecutive years.

She has a snarky footnote at the end of her post that references paleo eating.

And yes, this applies to low-carb too; you can keep the weight off if you stay on Atkins/Sugarbusters/Paleo, but just as with other sorts of diets, people mostly don’t.  They do great for 6-18 months, and then they start getting cravings for carbs, and eventually they give in, and the weight comes back . . . and the diet’s advocates explain that of course paleo works, but not for lazy slobs who inexplicably go off it.  At least from what I’ve seen, the pattern is really surprisingly un-different from other sorts of diets.

It’s sort of a fair point. It’s kind of a “duh” that paleo (or any other way of eating that is healthier than an industrial Western diet) doesn’t help you anymore if you stop doing it and go back to eating processed crap. You can lose weight (if you are fat) and get healthier with any reasonable diet if you stick with it.

Paleo is getting more popular now and there are lots of people doing it. If past diet trends are any guide, in 10 years most of the people who have lost a bunch of weight on paleo will no longer be on paleo, and will have gained the weight back. I can argue that paleo is easier than other diets to follow, and in some ways it is. It tends to be satiating and, if done right, is satisfying. There is an online community that provides lots of support, and that’s not likely to change any time soon. However, if you follow paleo blogs you occasionally see one go dark. Sometimes that person comes back a few months later, admitting to having gone off of paleo for one reason or another and proclaiming a renewed commitment to eating well. Those blogs then sometimes go dark again, presumably because it’s frustrating to keep “coming back” to paleo. Most people on paleo have no blog, but there is no reason to think that sticking with paleo over the long term will be what most paleo practitioners will end up doing.

The fact is that paleo is hard. You are surrounded by people who eat differently than you and maybe even make fun of you for it. You have to cook almost all of your food from scratch, which is fun sometimes and a real chore at other times. You have to be careful in restaurants and other places outside your home. It’s kind of tiring. While you’re on paleo you tend to feel great, but once you’ve been off it for awhile there are many factors limiting your motivation to start again.

If you go off of paleo, it’s not because you are a “lazy slob.” Permanent dietary change is challenging in a culture that values convenient, cheap, crappy, heavily advertised food. If you are aware of the barriers and plan around them, you can minimize the chance of falling off paleo so that you can enjoy the myriad health benefits. My biggest hope is that paleo will eventually generate enough interest, money, and research that it becomes mainstream, and something closer to paleo becomes the thing that most recognized health experts recommend. That would generate attempts to monetize paleo, creating fake paleo products, and so on, but it would also make it easier for people to find their way toward real health.

Here’s hoping.

Update: Paul Jaminet uses The Fat Trap article as a springboard to a post on his Theory of Obesity. It is, as usual, thoughtful, well-argued, and interesting. Go read it.

SAD

In the paleo world you will often here the phrase “standard American diet,” or “SAD.” I don’t use it.

Bad diets are not exclusive to Americans, as international statistics on obesity and diseases of civilization show. If you live in New Zealand, do you eat the SNZD? In Hungary, the SHD? I don’t think it’s helpful to deprecate the eating patterns of any one country; nor is it helpful to give a pass to unhealthy from other places.

Also, does “SAD” mean the diet eaten in the United States, or does crap food from any country in North or South America count?

It’s a dumb term. I use “industrial Western diet,” personally. I know “IWD” doesn’t exactly flow trippingly off the tongue, but I tend to prefer precision over vapid catchiness.

Cast iron

My most used and most versatile cooking tools are my two Lodge cast-iron pans. Sarah Ballantyne has an excellent post about what’s great about cast iron cookware and how to use and care for it. I hadn’t thought about it, but it does make sense that cast iron went out of style when cooking with fat went out of style, because it doesn’t really work for low fat cooking. Fortunately, that’s not really a problem when cooking real food.

I’d simply add this to her post: If a pan is so soiled that scrubbing with water won’t clean it, you don’t need to wash with soap and then season it again. Instead, boil water in the pan for a few minutes. Let it cool a bit and you’ll find that cleaning is now easy.

Not doing it right

Paleo is an excellent substrate for health. If we had all eaten this way from birth (after our mothers had in turn eaten that way from birth) I think there would be little need for treatment of what are known as diseases of civilization.

I, however, spent 46 years eating an industrial Western diet before switching to paleo. Luckily, paleo seems to have pretty much resolved the health issues that I was experiencing. On the other hand, I don’t expect that those 46 years will have no effect. There is probably metabolic and cellular damage that will catch up with me sooner or later.

Other people are less lucky than me. If you comb through the posts at paleohacks.com, you find people with serious health problems (hypercholesterolemia, fibromyalgia,  failure to lose/gain weight, allergies, etc.) that paleo has not corrected. There are two ways of looking at an issue like that:

  1. There are perhaps a few ways to tweak the paleo paradigm to get a better outcome. More fat, less fat, less cheating, no dairy, fermented vegetables, elimination diet, organ meat, grass fed meat, more vegetables, no vegetables, no fruit, no nuts, higher carb, lower carb, zero carb, supplements, exercise, leptin reset: there are lots of ways to do paleo. Some of them might fix a particular health problem that “generic” paleo hasn’t solved.
  2. Maybe the person is simply damaged beyond the ability of paleo to repair. There is no reason to think that the harm caused by an industrial diet can always be corrected by a healthier diet. Sometimes medication, surgery, or other intervention is necessary. In other cases, there might be no way to fix the problem. There is no point at which it makes sense for someone to blame themselves (or have other people blame them) for health problems that persist after a reasonable attempt to implement a paleo approach to diet and wellness. Just because a particular problem resolves for some people on paleo is not a reason to believe that problem will go away for everyone on paleo.

How do you tell whether changes to paleo will solve any particular problem? Beats me. If paleo isn’t working, I think it does make sense to spend some time making changes that might help. At some point, it’s probably necessary to seek other remedies. At that point, the problem is finding a practitioner who won’t tell you that the first thing to do is stop that crazy paleo stuff and start eating a normal diet again. That will become easier as paleo becomes more mainstream and has more research support.

You may not understand how odd you are

Weird Science

If you’re going to think about homo sapiens in evolutionary terms, it’s valuable to compare the ways in which humans differ from other animals. It seems to me that, even aside from behavioral oddities such as building giant civilizations and tweeting about the Kardashians, we are stranger than platypi. That’s easy to miss, because we think of ourselves as normal. Hah!

Here are a few of the ways that we are weirdos:

  1. Humans have huge freaking brains. Brains are useful things; most critters have them. But ours are gigantic. That’s weird because there are definite disadvantages to having so much neural tissue wadded up at the tops of our bodies. First, the metabolism thing. Brains use lots more energy, ounce for ounce, than most other tissue. For that reason, we need to eat more than other animals our size. When we experience metabolic impairments like famine, we must let other tissues go to waste in order to keep greedy brain tissue going so that we don’t die. Another problem is that the size of our brains requires a big head. Look at a baby some time. They seem like they are half head! When we are born, our big honkin’ heads need to fit through our mother’s pelvis, which they barely do. Human men (including me) are attracted to women with narrow waists and wide hips, because those women will be more likely to survive childbirth. Other animals, including apes, find giving birth to be no big deal, something they may nap through. Not so for wild humans, who have incredibly difficult, painful births and high rates of death for mothers and children in childbirth.
  2. We walk upright, and we do it pretty well. Can you think of another critter that does that? Some animals, such as bears, are mainly quadrupeds but can get up on two legs for a better view and sort of waddle slowly around, then go back down on their forelegs when they need to make speed. Other animals, such as penguins, walk upright poorly and are optimized for swimming. Apes can walk bowlegged on two legs, clumsily, and knuckle walk for speed.  Two-legged fast movers like therapods and ostriches have a T body configuration, with most of the body balanced horizontally on two legs. The human ability to stand, walk, and run fully upright (far better than what we can do on all fours) is very strange. If we didn’t do it every day, it would be perfectly reasonable to think that upright walking is not really possible.
  3. Human females are strange (yes, I know I’m not the first human male to remark on that). First is the concealed ovulation. The females of other species, including our ape cousins, generally go into heat when they are fertile. Males and females actively engage in mating and sex when females are fertile and don’t get horny when those behaviors will not produce offspring. There are mechanisms in place to signal when a female is fertile and when she is not. By contrast, human females seem designed to prevent detection of fertility (and thwart use of the rhythm method of birth control). Thus, we tend to want to have sex all the time, whether it will result in procreation or not. This is utterly strange and biology has no good explanation for it (there are lots of theories, none of them all that convincing). All other species have evolved not to waste energy, time, and precious bodily fluids on sex when there is no chance of producing offspring. We are the only ones whose biology lets us do it for fun. There is also the matter of breasts. There is no obvious reason why breasts enlarge when girls enter puberty. Milk glands are not that big (breast tissue is mostly fat), and other mammals have no need for the enlarged teats that many (not all) human females exhibit. David Brin thinks that breasts and other adult sexually dimorphic characteristics may have the evolutionary purpose of encouraging human males to imprint sexually on adult females rather than children. That’s the least stupid-sounding theory I’ve read. Whatever the cause, I am in favor of breasts, and human females in general.
  4. Those in the paleo community like to argue about the meaning of the human eating/digestive apparatus. By comparison to other creatures, we have weak little baby teeth, pathetic for killing or chewing. Compared to our ape relatives, we have short guts that have little plant fermentation capability. However, our guts are not quite built for carnivory, either. However, by comparison to other oddities, our guts seem a paragon of normality.

I’m sure a physical anthropologist could list a few more bits of strangeness (and perhaps correct a few errors on my part), but this is a good start. We are freaky-deaky critters.

What if this is not an outlier?

This is the video that’s been shared around the paleosphere recently. If you haven’t seen it, take the time to watch. It is worth your time.

This is particularly interesting to me because I’ve spent my career working with people who have problems. I’ve worked with people with neurological conditions (traumatic brain injury, stroke, Huntington’s, multiple sclerosis, Parkinson’s, Alzheimer’s), developmental disabilities (autism spectrum disorder, mental retardation), and psychiatric conditions (schizophrenia, bipolar disorder, personality disorders, obsessive-compulsive disorder, post-traumatic stress disorder). I’ve done my best to help create a therapeutic environment for the people I’ve worked with. Every single one of them is, to some degree or another, a tragedy. If you’ve never met a person with advanced Huntington’s disease who was a functioning, productive adult 5 years ago but who now can’t remember what happened 60 seconds ago, I assure you that it is heartbreaking.

In any institutional environment, the diet is carefully designed (usually by a certified dietitian) to meet nationally recognized standards of nutrition. In some cases, I’ve been involved in trying to make the diet healthier—less sugar, more vegetables, etc. It is incredibly hard to get most teenagers who suffer from debilitating mental illness to eat anything but junk. It’s the same with most others.

I have no nutritional credentials, so there is be no way for me to advocate for anything like the diet that Dr. Wahls used to reverse her symptoms of multiple sclerosis. I would be dismissed as a crank and ignored. I wonder, however. Her experience is that of one person. It’s anecdotal data, of no scientific generalizability.

Imagine, however, that you could do the experiment. Take 1000 people with debilitating degenerative neurological diseases. Divide them randomly into two groups. Give them both standard therapy, while one group eats a normal diet and the other eats an optimized paleo diet. What if the results that Dr. Wahls got were typical for the paleo diet group?

Do the same experiment with other groups, such as people with autism, combat veterans with traumatic brain injury, victims of child abuse affected by severe trauma, and others. Imagine that many of them show similar improvement to that of Dr. Wahls. Not all, of course, and most not “cured.” But significant, noticeable, clinical improvement.

That could change the world. It could happen in the next 30 years. The research is certainly do-able. The biggest barrier, of course, is the lack of profit to push it. No large companies make lots of money pushing a paleo diet for people with disabilities. Lots are invested in the status quo. That makes the project much, much harder. It would take very clear results from large, well-controlled studies to generate any momentum. Not impossible, but very hard.

It is interesting to think about. I wonder…

Soaplessness

soapy feet

I began experimenting with eliminating soap about a year after starting paleo. If humans are not broken by default, then it makes no sense that our skin and hair require that we use harsh chemicals to strip them of oil each day and then fix any resulting problems with moisturizers and conditioners.

I started by transitioning to dilute Castile soap for washing and shampooing. I added more water to the solution every time I filled the container. Then, when I had a week off from work, I switched to using only water to rinse off. Nothing bad happened. No unusual body odor. No other problems. So I continued, using soap only to wash my hands.

Then the hair. I started washing it only every other day, with daily conditioner. I tried rinsing with a solution of water and baking soda, followed by apple cider vinegar. (Do not get A.C.V. in your eyes!) That worked OK.

Finally, I just went cold turkey. I had previously had fairly greasy hair that needed to be washed every day or it looked and felt gross. I had also previously had dandruff, which disappeared on paleo. For a couple of months I used the baking soda and cider vinegar treatment once a week, then every other week. After awhile I just forgot to do that and it was fine.

Now I shower every day with just water. That’s all I seem to need. I have less body odor now than I did before changing my diet and eliminating soap. I still use an aluminum-free crystal deodorant as I have a job involving lots of social interactions and, sometimes, physical activity.

Would this work for you? I have no idea. I am a Caucasian male with regular hair that I keep short, along with a short beard and mustache. This approach might work well for you, or it might transition you into social unacceptabiliy-ville. I’ve seen lots of discussion on going shampoo-free on various message boards; clearly some have more trouble with that than others. You may find that it works very well, or you may not.

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