Monthly Archives: August 2012

Rundown on Booze

I have contributed very very little to the Paleo world. I don’t mind it being pointed out, even in the slightest: I came late to the party, I steal stuff from dudes all over the ‘nets, I have no qualification to lend credibility to my name…

My contribution, friends, is essentially limited to asking the question that lead to Robb Wolf‘s single most famous statement about alcohol. If you don’t know it already, you should: “Drink enough to maximize your sex life without limiting performance.” Perfect, right?

Yeah, that’s us!

What we’re looking for in all of this eat-to-be-healthy stuff is balance, specifically the balance that Robb is pointing out. I want you to not damage yourself with alcohol; that said, I don’t want you to ignore the fun of life by avoiding it completely, either (if you enjoy it). Further, there are ways to enjoy alcohol that make it more fun and less… regrettable. Six simple tips to drinking:

1) Drink early, if you can. Yeah, I know, I sound like a complete lush saying this, but starting in on tipsy-time around noon, and arriving back somewhere close to sober by bed time is just about perfect, as it saves you the disrupted sleep that characterizes late-evening drinking. Bad sleep = bad. It may also save you from some poor food choices.

2) Drink distilled (clear) liquor: tequila, scotch, shochu, gin, rum, tequila, whiskey or tequila, thus avoiding the liquid calories in fermented drinks, and especially the gluten in beer.

20120802-191905.jpg

YAAAAAAAAAAAAAAAAAAAAAAAAAAY

3) Drinking fizzy stuff helps alcohol along to the brain (which in theory means you’ll need less). More chemistry = drunker, quicker, cheaper and with fewer consequences*. True story.

4) Added sugar = added bad. Now, if you’re not losing sleep over it then I’m not going to, but sugar in things like Mojitos, rum and cokes and my darling Margarita is an issue to be conscious of for those trying to lose weight. By the way… if you don’t want to drink, don’t fucking drink. Duh.

Related note: don’t excuse your wussy drink because it was made with a “zero calorie” sweetener. Either enjoy it, sugar and all, or don’t. “Zero calorie” just means “tastes bad and may give you cancer”. Yeah, alright fine, if you really like that diet-fruit-color-drink, go for it. Make sure it matches your purse, though.

5) Drink with lemon or lime, as they help to control blood sugar. They also taste amazing, so… you’re welcome.

6) If you can, try to finish your ‘imbibery’ with a protein and fat snack: the two, eaten before bed, help restore melatonin and human growth hormone production, improving sleep quality and recovery.

Finally, six hangover cures that may, or may not, have worked for me in the past:

1) Water.  Obviously.

2) Coffee: pretty good for headaches and “moving things along”, intestinally-speaking.

3) Eggs. Protein and fat seem to help restart the all-systems.  Actually, eggs are pretty good anytime, just ask Chris Masterjohn.

4) Cold Shower.

5) Exercise at 70% perceived intensity for 30-minutes-ish. You know, if I can.

6) Suffer.

*When I say fewer consequences, I mean fewer consequences for non-morons, that is people who don’t take drinking as an excuse to be a douche-bag or a creeper, people who don’t try to drive when drunk, etc. For the idiots of the world, you’re on your own. I’d say sorry, but I’m not.

Yoroshu ni,

Mori

20120802-191813.jpg

(picture courtesy of PVCNav)

Advertisements

1 Comment

Filed under Alcohol, Social

何故パレオダイエット、パート1:パレオとは?

強くなりたいと思いませんか?

なりたくないなら、身体をより美容にしたいと思いませんか?

美容も興味ないなら、健康をもっと良くしたいと思わないですか?これは肥満、心臓病、糖尿病、自己免疫病、骨粗鬆症などなどを防ぐことだけれど...

上記の3項目はトレーナーの私達が最も多く訊かれる課題だが、ある1つに興味がないと言う人にも、全部が繋いでいると言う真実を知って頂きたい。要するに健康への道、丈夫な身体への道、美容な身体への道の基本は統一です。知らなかったの?

右側:マークシッソン、パレオ指導者
左側:ディーンオーニシュ、菜食主義指導者
そう言えば、違いは見えますね...

何の道かと言うと、これは我々の原始人であった先祖が食べていた食事方法、つまりいわゆるパレオダイエット。

ところで、申し遅れたかも知らないけど、このブログは自分の身体が不満に思っている人の為。それだけです。然し、自分に満足してる方は逆に、何故健康についてのブログを読むかは、不思議にしか思えないけど...

上記の肥満、心臓病、糖尿病と自己免疫病、骨粗鬆症、そして癌、小児脂肪便病、自閉症、パーキンソン病、アルツハイマー病、鬱病… これらは現代の病気と呼ばれ、原始人に無い病である。そう言う観察に生まれた説に拠れば、我らは遺伝的に異なる事が殆ど無いので、原始人の様に食べたり、日差しを浴びたり、身体を動かしたりすると、この病を一生も患うこと無く、長生き出来る。

マサイ族では肥満、心臓病などは知られていない

パレオと言う言葉は旧石器時代(英語で「Paleolithic Era」と言う)を引き合いに出す。その時代において、人間に穀物、米、砂糖、豆類、乳製品などの農産や畜産物が食べられなかった。その時代から遺された骸骨を調べると、我々の原始人の先祖は素晴らしい身体を持っていた事が明らかだが、近現代でまた原始人であった民族を観察すると、何と、全く同じ事が見える。その民族には癌、肥満、糖尿病、心臓病等々...現在において死亡の最も多い原因が知られていない。 そして、実験してみると論じた通り、現代(新石器時代とも言う)の食べ物を止めれば、健康の尺度の殆どが、殆どの場合では、良くなる。

「じゃあ、どうすればいい?」と訊きたいでしょう。最良なやり方は自分で試す事だと私は思う。要するに、自分に厳しくして、穀物、米、糖分の多い物、豆類、乳製品を30日間で止めてみて、どんな調子になるかを自分で感じてみる。そうしたら一つずつ上記の物を食に取り入れて、入っている事によった調子変動を観察できるでしょう。その過程で実に何の食べ方が自分に合っているかを知る事ができる。

最後ですが、自分の事をちょっとだけ弁護させて頂く。このブログを書くのに、私は直にお金などを貰うことは無い。薬品やサプリメント会社に何も貰っていないし、私が書いている事によって何事にも宣伝になっていない。私に利益があれば、それは正しい情報を伝え、信用され、私のジムをご参加頂く点にしか存在しない。つまり、私には、人を騙す動機は無い。

そう言っても私は間違いを犯さないなどと言っていない。ただ、私は自分の観点から見える真実を述べているに過ぎません。

宜しゅうに、

驚いたな〜

Leave a comment

Filed under Food, Meta, 日本語

アルコール

パレオダイエットの世界に、私は殆ど役に立てない。認めるのが恥ずかしくもなにもないちょっと恥ずかしいけど、真実なので・・・まあ、本当に私は他人の言葉をぱくっているだけだし、博士でもないし。

私が役に立ったのは、ロッブ ウルフ先生の最も有名なアルコールについての声明で、私が尋ねた質問に対して彼の答えだった。

「アルコールは性生活を最良にし、身体能力を害しないような適量を呑むべき。」

より良いセックスダイエット!我らだね!

私にできることは単に優れた先生の研究や論文を提供する事だけ。今日考えて貰いたいのはバランス、特にロッブ先生が言っているバランス。つまり、アルコールで健康を害するまで呑まないが、好きだったら、その楽しみを失くす事が惜しい。その上、アルコールを楽しみながら、後悔を慰める方法はある。それは「六つの呑むコツ」:

1) 酔っ払いに聞こえるかも知れないけど、時期的に早く呑む方がいい。ベストで言うとお昼くらいから飲み始め、いい酔い具合になるが、寝る前までに、酔いを覚ます事。それで睡眠を害する傾向を避けられる。悪い睡眠=悪い健康 。そしてそれで、悪い食べ物を避ける事ができる

2) 蒸留、つまり透明な酒を呑む方がいい。例えばテキーラ、スコッチ、ジン、焼酎、ラム、テキーラ、ウイスキーとテキーラなどを呑むと、発酵酒のカロリー、特にビールのグルテンを避ける事ができる。

20120802-191905.jpg

YAAAAAAAAAAAAAAAAAY

3) 炭酸を飲み物に加えるとアルコールの吸収が良くなるので、呑む量が減ると言われる。まあ、その説もあると言ったらいいかな。化学のお陰で、呑むのがより楽しい。正に。

4) 砂糖を加える=悪を加える。まあ、気にしなければ、私も構わないけど、ラムコーラ、モヒート、そして私の大好物マルガリータは皆砂糖が結構入っていて、痩せたい人にお勧めできない。因みに呑まなくてもいい。尚、女々しいドリンクを「低カロリーだからいい」とかで簡単に許さないで貰いたい。つまりそのものを呑んで楽しむか、呑まない。低カロリー甘味料と言うのはまずい、癌を引き起こすものなので、呑む価値はないと思う。まあ、いいよ: その甘い、フルーツっぽい、変な色のドリンクを飲みたければ、呑んで。ただバッグとの色合わせを忘れないでね

「カロリー無しだからいい」と言う勘違いが多い

5) 生レモンかライムと一緒に呑めば、血糖値が上々に上がる事を防ぐ事が出来る。そして美味しいので・・・どう致しまして。

6) 呑んだ後で蛋白質と油分が入ったものを食べると睡眠中で発生するホルモン、人間成長ホルモンとメラトニンの発生を順調にする。これでより良く眠れるし、回復が早くなる。

そしたら、経験から言う、二日酔いから回復するためのコツ、6つを教える:

1) 水(当たり前と思うけど)。

2) コーヒー。頭痛を和らげるし、胃腸の運動を回復させる。

3) 玉子。蛋白質と油分が身体内を全面的に順調にさせる。実はいつでもいいものだが。

4) 水シャワー。

5) 無理のない、できる最上限の70%くらいの運動をする。まあ、やりたいと思ったらね。

6) 苦しむ。

宜しゅうに

(映像はPVCNavより)

20120802-191813.jpg

Leave a comment

Filed under Alcohol, Meta, 日本語

Soy, Re-dun‏ Part 2: The Nitty-Gritty

This is Part 2 of my two-part post about the article The Soy Ploy, where we get into my defense of the contents of the article. Click here to see my apology (part 1).

“The Soy Ploy” begins by listing the health-problems that soy has been linked to: “malnutrition, digestive problems, thyroid dysfunction, cognitive decline, reproductive disorders, immune system breakdown, and even heart disease and cancer”, saying that this linkage was established in “hundreds of studies”. This is essentially the whole claim, the whole point of the article. It goes on to explain the proposed mechanism for a few of the problems listed, in detail, and why some cultures (like the Japanese), who have consumed soy for a long time don’t seem to have these problems in as great a quantity as you’d expect, but in essence these 7 or 8 claims are the heart of the issue. Let’s address them, and one other point the article raises that seemed objectionable to some, and call it a day.

Malnutrition

The claim that soy has been linked to malnutrition is a fairly easy one to support: studies like J Nutr, 49, 527-39 and J Am Vet Med Assoc, 123, 38-9 , (in animal models); JOACS, 1974 Jan;51:161A-170A and Pediatrics 1981;68(3):394-6 (in humans) make pretty clear a pattern of ‘failure to thrive’ and micro-nutrient insufficiency caused by soy. In studies like these, interventions (where one element in particular is changed and everything else is left the same) isolating the effects of any particular element becomes much easier, so the results are more convincing than the often-seen epidemiological studies.

Further, the logic behind this claim is pretty easy to see: as The Soy Ploy says, soy contains phytates and digestion inhibitors (http://www.ajcn.org/content/48/5/1301.short, and also Journal of Food Science. January/February 1984;49(1):199-201 and Journal of Food Composition and Analysis 1989;2:67-68, which I could not find an online source for, sorry), materials that bind to nutrients in food, causing them to be unavailable for digestion. I cite sources… there really is no need though: the presence of these substances (“toxins” is what the article’s author calls them) is established fact, essentially undisputed as far as I can tell.

Digestive Problems

The logic is pretty easy to understand here too: proteins in many beans, including soy, are irritating in the intestines, causing poor digestion (and perhaps some of the malnutrition we just spoke of). It may or may not be of interest to the reader that this effect is quite similar to the effect that the consumption of grains has.

Medicina (B Aires) 1999;59:747-752 (spanish!). Rats fed soy-based chow had reduced growth and an increase in gastrointestinal problems compared to controls.

J Nutr2000;130:2292-2298. Dietary mixtures for pigs, which are carefully formulated to promote reproduction and growth, allow approximately 1 percent of the ration as soy in a diet based on grains and supplements. (Pigs have a digestive system similar to humans.) The Central Soya Company, Inc. website gives a range of 2.5 percent to 17.5 percent soy in the diet of pigs, citing a number of anti-nutritional components that “have been documented to cause gastrointestinal disturbance, intestinal damage, increased disease susceptibility and reduced performance in pigs.”

Food Chem Toxic. 25 (10), 739-45 (link unavailable). Ingestion of soy produced enlarged pancreases in mice and “pancreatic adenoma and carcinoma in the rat.”

(animal models)

J Pediatr Gastroenterol Nutr 1983 May;2(2):271-87 . Soy feeding caused damage to small bowel mucosa in 2 infants. The damage was similar to that of celiac disease and consistent with a lectin-induced toxicity.

Pediatr Res 1981 Sep;15(9):1240-1244. Soy formula fed to premature babies caused in increase in digestive enzymes compared to milk-fed babies, indicating low digestibility of soy formula.

Soy Protein and Human Nutrition, Harold L Wilcke and others, eds, Academic Press, New York, 1979 (It’s a book, publishing the findings of a conference). A group of Central American children suffering from malnutrition was first stabilized and brought into better health by feeding them native foods, including meat and dairy products. Then for a two-week period these traditional foods were replaced by a drink made of soy protein isolate and sugar. All nitrogen taken in and all nitrogen excreted were measured. The researchers found that the children retained nitrogen and that their growth was “adequate,” so the experiment was declared a success. However, the researchers noted that the children vomited “occasionally,” usually after finishing a meal; over half suffered from periods of moderate diarrhea; some had upper respiratory infections; and others suffered from rash and fever. It should be noted that the researchers did not dare to use soy products to help children recover from malnutrition, and were obliged to supplement the soy sugar mixture with nutrients largely absent in soy products, notably vitamins A, D, B12, iron, iodine and zinc.

Thyroid Dysfunction

Perhaps the best supported of all of the claims about soy is that soy causes thyroid problems, especially the auto-immune form of hypothyroidism, known as Hashimoto’s. In this experiment, published in 1939, the researchers found Goiter (thyroid dysfunction) in rats after feeding them soy flour. The rats’ thyroids grew to 4 or 5 times their usual size in seven weeks (they also required iodine supplementation, a deficiency (see “malnutrition”) created by the soy itself).

J Nutr 17 (Jun), 545-55 . That, of course, is just the tip of the iceberg: J Nutr, 22, 43-52, Gann 1976, 67:763-765 and others show other animal models of the same phenomenon. Pediatrics 1959;24;854 (link unavailable), Pediatrics, 24, 752-60, J Am Coll Nutr 1990;9:164-167 , Archives of Disease in Childhood 2004 Jan;89(1):37-40, Biochem Pharmacol 1997 Nov 15; 54:1087-96 , all show very clear links between soy consumption and thyroid dis-regulation of some kind in humans, be it soy formula increasing the likelihood of thyroid problems later in life, or soy eaten later in life inducing thyroid problems or making them worse. I see no need to belabor the point.

Cognitive Decline

Problems with cognition are harder to explain, perhaps, than goiter, reproductive problems or malnourishment. I’m certainly not Trainer enough to claim that I really understand it in detail. I do find it interesting, however, the degree to which this claim falls in line with both personal experience and widely held stereotype. It is perhaps not for nothing that hippies and vegetarians are often depicted as dopy and forgetful.

Brain Res 2000 Mar 17;859(1):123-31. Animals fed diets containing phytoestrogens for 5 weeks had elevated levels of phytoestrogens in the brain and a decrease of brain calcium-binding proteins. Calcium-binding proteins are associated with protection against neurodegenerative diseases.

Plenary Session #8: Cognitive Function, The Third International Soy Symposium, Program, November 1999, page 26 . An ongoing study of Japanese Americans living in Hawaii found a significant statistical relationship between two or more servings of tofu per week and “accelerated brain aging.” Those participants who consumed tofu in mid life had lower cognitive function in late life and a greater incidence of Alzheimer’s and dementia.

Dementia and Geriatric Cognitive Disorders 2008;26(1):50-7 . The study found that those who ate tofu regularly had worse memory than those who did not. The study also found that tempeh consumption increased memory, possibly due to its high levels of folate caused by fermentation.

J Am Geriatr Soc 1998 Jul;46(7):918-20. Women in the higher estrone quartiles had lower performance on two cognitive tests.

Another part of the picture is probably zinc deficiency, which soy induces (also shown in Pediatrics 1981;68(3):394-6, which is quoted above), and the increased uptake of aluminum by the brain that results:

Brain Res 1983;288:393-395 . Zinc deficiency will cause more aluminum to be absorbed into the body in general, and into the brain in particular. Aluminum will be absorbed by competing for binding sites on a zinc-containing ligand. Fluoride and phytates in soy formula will induce zinc deficiency.

Reproductive Disorders

Reproductive disorders are another piece of low-hanging fruit: phytoestrogens are known to interact with steroidal hormone receptors, especially the sex hormone receptors. It’s only logical that these sorts of interactions have consequences for reproductive health.

J Nutr 1954;55:639. Exposure to the phytoestrogen genistein caused significant advancement of the vaginal opening and a decrease in the number of litters born to mice.

BJU Int 2000 Jan;85(1):107-113. Vegetarian women are more likely consume more soy than the general population. Incidence of hypospadias was twice as great in vegetarian mothers than in non-vegetarian mothers. Hypospadias is a birth defect due to interrupted development of the penis.

Canadian Medical Association Journal 1983, May 15;128(10):1197-8. Male children exposed during gestation to diethylstilbesterol (DES), a synthetic estrogen that has effects on animals similar to those of phytoestrogens from soy, had testes smaller than normal on maturation.

Am J Clin Nutr 1994 Sep;60(3):333-340. Six women with regular menstrual cycles were given 60 grams soy protein containing 45 mg isoflavones daily. After one month, all experienced delayed menstruation. Luteinizing hormone and follicle-stimulating hormone were significantly suppressed. The effects were similar to those of tamoxifen, an antiestrogen drug. Regular menstruation did not resume until 3 months following the cessation of soy protein consumption.

Proc Natl Acad Sci USA 2000 Apr 25;97(9):4790-5. Researchers found that flavonoids, especially genistein, can cross the placenta and induce cell changes that lead to infant leukemia.

JAMA 2001 Nov 21;286(19):2402-3 (sorry, no abstract). Although reported in the media as a vindication of soy infant formula, the study actually found that soy-fed infants had more reproductive problems and more asthma as adults.

Immune System Breakdowns

This is another one that I don’t fully understand, but it does seem to have some traction. Apparently the isoflavones genistein and daizedin, found in soy, are suspected of blocking immune system function.

Transplantation 1991 Feb;51(2):448-50. Genistein blocks the production of T cells needed for the immune system. The authors conclude: ” . . . that genistein is a powerful immunosuppressive agent. . .” and suggest that it has a potential use in the treatment of allograft rejection.

Cancer Res 1992 Nov 15;52(22):6200-8. Effects of genistein on the growth and cell cycle progression of normal human lymphocytes and human leukemic MOLT-4 and HL-60 cells…. The results suggest that genistein “is expected to be a strong immunosuppressant.”

Heart Disease and Cancer

The seemingly most controversial claims of the “anti-soy” camp, that soy consumption is potentially a factor in heart disease and cancer are just that: controversial.

I personally remain undecided about soy even as a contributing cause for heart disease: some of the confounding factors I would like to exclude in a study of the relationship – gluten, excessive fructose consumption, other legumes, industrial seed oils, etc – are all endemic in populations that consume soy.

Luckily neither I nor Nourishing Our Children are making causal claims in regards to cancer, heart disease and soy.

First, as to Heart Disease:

Am J Clin Nutr 1999;69:419-25. Many studies have shown that soy consumption can lower serum cholesterol levels. These studies have led to claims that soy can prevent heart disease. However, the theory that high cholesterol levels cause heart disease is becoming more and more untenable. Cholesterol levels are not a good marker for proneness to heart disease. However Lipoprotein(a) or Lp(a), does serve as a good marker for heart disease. This study indicates that soy raises Lp(a), meaning that it is likely to contribute to heart disease.

… that’s all I could find (easily). While I agree with the statement “lipoprotein(a) serves as a good marker for heart disease” and that the “cholesterol causes heart disease” theory is dead as dead can be, I still find the “soy contributes to heart disease” assertion tenuous.

Aaaand Cancer:

Cancer Epidemiol Biomarkers Prev. 2002 Dec;11(12):1674-7. People who consumed 92.5 grams of soy per 1000 Kcal were found to be 2.3 times more likely to be at risk for bladder cancer. The results were calculated to factor in levels of education and cigarette consumption in study participants.

Endocrinology 1978 Nov;103(5):1860-7 . Phytoestrogens (“coumestrol, genistein, and formononetin and the mycotoxins, zearalenone and its reduced derivative, zearalenol”) “translocate the cytoplasmic estrogen receptor and bind to unfilled nuclear estrogen receptors in whole cells. Bound nuclear receptors are then processed in a manner similar to estradiol in a step, which rapidly decreases total cellular estrogen receptors. The phytoestrogens are also biologically active; they can markedly enhance tumor cell proliferation.”

Cancer Epidemiol Biomarkers Prev 1996 Oct;5(10):785-794. Twenty-four normal pre- and postmenopausal white women, ages 30 to 58 were studied for one year. During months 4-9, the women ingested 38 g soy protein isolate containing 38 mg genistein. Seven of the 24 women developed epithelial hyperplasia during the period of soy feeding, a condition that presages breast cancer. The authors noted that “the findings did not support our a priori hypothesis” that soy protected Asian women against breast cancer. “Instead, this pilot study indicates that prolonged consumption of soy protein isolate has a stimulatory effect on the pre-menopausal female breast, characterized by increased secretion of breast fluid, the appearance of hyperplastic epithelial cells and elevated levels of plasma estradiol. These findings are suggestive of an estrogenic stimulus from the isoflavones genistein and diadzein contained in soy protein isolate.”

Environ Health Perspect1997 Apr;105 (Suppl. 3):633-636. Dietary estrogens were found to increase enzymatic activity leading to breast cancer. “Our findings are consistent with a conclusion that dietary estrogens at low concentrations do not act as anti-estrogens, but act like DDT and estradiol to stimulate human breast cancer cells to enter the cell cycle.”

Br J Nutr 2000 Oct;84(4):557-63. Men consuming tofu instead of meat for 4 weeks had lower testosterone-oestradiol ratios as well as changes in other hormone levels. “Thus, replacement of meat protein with soyabean protein, as tofu, may have a minor effect on biologically-active sex hormones which could influence prostate cancer risk.”

American Journal of Clinical Nutrition 2010 Feb;91(2):440-8. “Dietary phytoestrogens may contribute to the risk of colorectal cancer among women and prostate cancer among men.”

In an unexpected twist, soy and cancer are linked in tons and tons of studies, and while I’m still sorta’ unclear about the mechanism here, the link is strong enough, to say the least.

*********************************************************************************************************

There was another claim in the article that garnered some attention: Isoflavone (phytoestrogen) content in soy and its hormonal effects. The article claims:

10 mg provides the estrogenic equivalent of a contraceptive pill. Thus, the average amount of soy-based formula taken in by a child provides the estrogenic equivalent of at least four birth control pills. Because babies are more vulnerable than adults to the effects of dietary estrogens, the effects could actually be much greater than that of four birth control pills.

Hence the statement, “Babies on soy formula receive the estrogenic equivalent of at least five birth control pills per day.”

The doubts about this claim come from the math, specifically the conversion of the one (isoflavones) into the other (estrogen) in the specified amounts: How did we get to the equation “10mg of isoflavones (in an infant) = 1 contraceptive pill”? Is this, in fact, “black magic argumentation”?

The answer is SCIENCE. Science is how we got there.

You tell ’em, Robb! Yeah!

While I’ll admit that we are talking about estimates (though thoroughly credible ones), it sounds like it was just simple extrapolation upon known quantities:

Bulletin de L’Office Federal de la Santé Publique, No 28, July 20, 1992 (I worked hard trying to find a link to this. I… I just don’t speak Swiss-German. The Journal exists, and it’s online. It existed in 1992… but I couldn’t make heads or tails of it, is really all I can tell you. If you’ve got a little more confidence with your French or German (or your Swiss-German!), you could have a go yourself and help me out). This study is quoted in a lot of places, and referenced in the article itself. The Weston A. Price Foundation summarizes: “The Swiss health service estimates that 100 grams of soy protein provides the estrogenic equivalent of the contraceptive pill.”

Proc Nutr Soc of NZ 1995;20:35-42 (this one doesn’t appear to be online, sorry). “Concerns have been expressed about possible adverse effects, particularly to the foetal-neonatal nervous and reproductive system. Adverse effects may occur by inhibition of the enzyme which converts the relatively impotent estrone to the much more potent oestradiol and by occupying the estrogen receptor resulting in antagonism of the naturally produced oestradiol. Adequate oestradiol is necessary for the imprinting and development of many physical, physiological and behavioral characteristics during the neonatal period and infancy. Infants on soy-based formula have been identified as a high-risk group because the formula is the main source of nutrient, and because of their small size and developmental phase. Infants absorb phytoestrogens and have a calculated daily dietary intake (per kg) 3-6 times that shown to have physiological effects on women. . .”

Of course, this study based its findings on serum measurements of isoflavones, so I may have spoken too soon about “estimates”:

Lancet1997;3530(9070):23-27 (YES! GOT ONE!). “The daily exposure of infants to isoflavones in soy infant formula is 6-11 fold higher on a body weight basis than the dose that has hormonal effects in adults consuming soy foods. Circulating concentrations of isoflavones in the seven infants fed soy-based formula were 12,000-22,000 times higher than plasma oestradiol concentrations in early life, and may be sufficient to exert biological effects, whereas the contribution of isoflavones from breast-milk and cow-milk is negligible.”

Supporting the Lancet finding (if disagreeing about the conclusion): Am J Clin Nutr 1998 Dec;68(6 Suppl):1453S-1461S. Noting the results of an earlier study which found that plasma isoflavone levels in infants fed soy-based formula were 13,000-22,000 higher than concentrations found in fed breast milk or milk-based formula, the authors explain these high levels as due to “. . . reduced intestinal biotransformation, as evidenced by low or undetectable concentrations of equol and other metabolites, and is maintained by constant daily exposure from frequent feeding.” The authors assert that these unnaturally high levels of isoflavones in the bloodstreams of soy-fed children “may have long-term health benefits for hormone-dependent diseases.”

If you’re interested in the subject and willing to put forth the effort you can have a look at the Weston A. Price Foundation’s website: http://www.westonaprice.org/. They have a pretty exhaustive collection of references with regards to soy and its health consequences, which was invaluable in writing this post. There’s plenty more there for the interested (or obsessive). Have fun.

So there you have it citizens, Soy Re-Dun. You can be fairly sure that I will not be addressing this again, unless some powerful new information comes to light.

Yoroshu ni

Mori

Leave a comment

Filed under Food, Meta

Soy, Re-dun‏ Part 1: An Apology

Hi ya’ll,

So recently I ran afoul of thoroughness and human decency: I posted to Facebook an article called “The Soy Ploy“, hosted on http://chriskresser.com/ and written by “… Nourishing Our Children, an organization dedicated to supported learning, behavior and health in children through optimal nutrition.” It was a mistake I hope you can all learn from.

You see, I posted the article without thoroughly checking for links to source materials (supporting studies or papers or articles or something).  I had expected there to be some links embedded in the text, for the article makes frequent reference to research; when I found that there wasn’t even a single one I was shocked and disappointed.  The fault lies with me; though no objection has been raised as to the veracity of the contents of the article (don’t fret, you can be sure we’ll get back to this), it can be correctly pointed out that neither Nourishing Our Children nor I nor anyone has sufficient authority to make claims, really any claims, and have them believed at face value.  Passing on material like that, material that has no links or direct references to scientific support, and thus no convenient way of verifying it, encourages logical error.  I apologize.

That said (I’m repeating myself but this bears repeating) I have not heard one real criticism of the contents of the article.  The website owner, Chris Kresser, is an acupuncturist and a functional medicine doctor, so I heard a lot of guilt-by-association (“now, I’m not saying this means anything, but this guy’s an ACUPUNCTURIST”); Nourishing Our Children’s Authority as a source was compared to the Authority of other sources (who remain nameless, lost in the crowd called ‘consensus’), and dismissed.  Criticisms like these are easy enough to laugh off as logical fallacies; it’s obviously easier to look up the background of the website in question than find evidence to refute its claims (or even articles disputing its claims, apparently).

There was one accusation that I’m not willing to laugh off, however: confirmation bias.  We should be clear, this is not a criticism of the contents of the article itself; it’s a criticism of the writers for seeing only their side of the story, and it’s a criticism of me, for believing an article because it said what I expected it to say on a subject I’m familiar with.  It is of course true that the article confirmed (that is, “stated”) something that I was biased towards (“already believed”).  The deeper implication, however, is that all people in the “don’t eat soy it’s not good for you” camp (to say nothing of the “eat saturated fat”, “avoid sugar and grains”, “avoid industrial seed oils” etc. camps) don’t fact check and don’t allow themselves to be exposed to the truth, i.e. to unbiased research.  “These small groups just go around and around citing each other to support their theories”.  It’d be a worthwhile criticism (though not proof of anything), if it were true.

It isn’t, however: the leaders (well, the people I think of as leaders like Robb Wolf, Mat Lalonde, Mark Sisson, Loren Cordain, the Drs. Eades, Chris Masterjohn, Chris Kresser, John Welborn, Greg Everett and others) of the Paleo movement (the intersection of the above-mentioned groups) are as quick as anyone to present, review or criticize research that is related to the nutrition guidelines that they advocate.  Robb and others advocate reading The China Study, T. Colin Campbell’s work that implicates meat consumption in cancer increase in developing rural villages in China.  They often pass on articles by vegans and vegetarians advocating against meat. Further, many Paleo advocates have had to change their stances on various issues; many changed their views on dietary carbohydrates, to accommodate new information about the Kitaavans, who live in remarkable health ‘despite’ a diet that’s 60% tubers.

It’s this, the ability to admit when you’re wrong and change your views, that’s essential to science, and a sure sign that, if nothing else, one is aware of one’s biases and able to judge things with them in mind.  The desire to “get it right”, not to have been right all along, is the only thing that protects any of us from being blinded by pre-conceived notions.

I acknowledged where I was wrong above; I did so in hopes that you’ll listen now, as I lay out the case for the contents of the article in question.  There are two things I hope to get out of you (whomever you are) reading the following paper: the first is that I hope to show you that there is significant evidence that soy is unhealthy (whether or not you personally seem to react badly to it); the second is to convince you that I use parenthesis too much.

Go on to Part 2

Yoroshu ni

Mori

1 Comment

Filed under Food