Originally posted by irongirl
Tietääkseni Japanissa käytetään runsaasti soijaa
Eiii välttämättä, ainakaan tään mukaan:
http://www.mercola.com/2000/jan/9/truth_about_soy.htm
Eli:
Perhaps the best survey of what types/quantities of soy eaten in Asia comes from data from a validated, semi quantitative food frequency questionnaire that surveyed 1242 men and 3596 women who participated in an annual health check-up program in Takayama City, Japan. This survey identified that the soy products consumed were tofu (plain, fried, deep-fried, or dried), miso, fermented soybeans, soymilk, and boiled soybeans. The estimated amount of soy protein consumed from these sources was 8.00 ± 4.95 g/day for men and 6.88 ± 4.06 g/day for women (Nagata C, Takatsuka N, Kurisu Y, Shimizu H; J Nutr 1998, 128:209-13).
According to KC Chang, editor of Food in Chinese Culture, the total caloric intake due to soy in the Chinese diet in the 1930's was only 1.5%, compared with 65% for pork. For more information on the traditional use of soy products, contact the Price Pottenger Nutrition Foundation.
The chief concern we have about the consumption of large amounts of soy is that there is a risk of mega-dosing on isoflavones. If soy consumers follow the advice of Protein Technologies International (manufacturers of isolated soy protein) and consume 100 grams of soy protein per day, their daily genistein intake could easily exceed 200 milligrams per day. This level of genistein intake should definitely be avoided. For comparison, it should be noted that Japanese males consume, on average, less than 10 milligrams of genistein per day (Fukutake M, Takahashi M, Ishida K, Kawamura H, Sugimura T, Wakabayashi K; Food Chem Toxicol 1996, 34:457-61).
Anteeksi pitkä kopypeistaus (vaikka oon niistä joskus valittanut), mutta ainakin tuon mukaan aasialaiset eivät todellakaan syö eivätkä ole ikinä syöneetkään nimenomaan soijaPROTEIINIA isoja määriä. Jos taas voimailija tai kehonrakentaja vetää protskujauhoo esim. 50 tai 100g päivä ja kaiken soijana, niin siinä tulee helposti varsin isot määrät niitäkin phytoestrogeenejäkin. Liekö terveellistä kenellekään? Myöskin samaisen artikkelin toinen lause soijan fermentoinnista on mielenkiintoinen.