Over the past decades, large differences were observed, in the concerns about the frequency of cardiovascular disease, osteoporosis and many forms of cancer, between asian countries and the vast majority of the western countries, which made people to investigate the possible causes of these differences.

One area that has presented a particular interest was that of alimentation. Usually, asians consume a diet semi-vegetarian or vegetarian, poorer in fats and cholesterol than the populations of industrialized countries diet. Another aspect is that asians consumes large amounts of soy products, which virtually does not exist in the western alimentation. For millennia, soy was a major sources of protein for populations in Asia. Is soy the reason for the lower frequency of cardiovascular disease, cancer, degenerative and osteoporosis in the asian countries?

Catapulted on the curative medicine ramp by the Honolulu study, the recommendation and favorable acceptance of soy were  attacked and shaken vigorously. While some consider it the blessing of our time, now that the animal products have proven harmful, others undergo it to a continuous ruthless attacks. While some consider soy a panacea, others think it’s good only for animals feeding.

Among other things, it states that soy contains large amounts of toxins and harmful natural substances as protease inhibitors, lectins, phytic acid, phytoestrogens and substances that negatively affect the thyroid gland function. At higher consumption, phytic acid in soy wouldlead to a shortage of mineral substances, especially iron, calcium and zinc.

Phytoestrogens are considered as the cause of early puberty that would occur in infants fed with soy formulas industrially prepared.

Also, it has been argued that, in children, phytoestrogens would produce growth disorders, joint deformities, thyroid disorders and sterility.

Even the higher frequency of cancers on the asian continent was linked to the consumption of soy.

Such supportings caused concern among many soy consumers. But before examining them let’s present several epidemiological data.

  1. In Asia, where the population consumes soy for thousands of years, are met fewer cardiovascular diseases and cancer.
  2. Chinese, who traditionally feeds with soy, presents only 10% of infarctions number which is met in the United States.
  3. After the vegetarians adventists, japanese are the population with the longest lifetime.
  4. Japanese women have breast neoplasm in a less proportion than those in the US or Western Europe. Instead, their nieces emigrated to the United States have breast cancer in the same proportion of american women.
  5. Finally, there is no indication that the populations who consumes the largest quantities of soy – chinese, japanese and koreans – would be endangered.

Epidemiologists have concluded that the daily use of soy products, associated with other lifestyle factors, has an protective action on health.

Categories: Diet, Health, Nutrition
Tags: soy

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