Soy products can be a double edge sword by blocking absorption of minerals key to weight loss
(NaturalNews) With vegetarianism gaining increasing popularity from the
1970's, reaching its peak in the 1990's, soy has emerged as a 'near
perfect' food, with supporters claiming it can provide an ideal source
of protein, lower cholesterol, protect against cancer and heart disease,
reduce menopausal symptoms, and prevent osteoporosis - among many other
things. It seems like a good thing - or is it really?
How did such a 'healthy food' emerge from a product that in 1913 was listed in the U.S. Department of
Agriculture (USDA) handbook not as a food but as an industrial product?
According
to lipid specialist and nutritionist Mary Enig, PhD, "The reason
there's so much soy in America is because the soy industry started to
plant soy to extract the oil from it and soy oil became a very large
industry." There was a lot of soy oil and with it came a lot of soy
protein residue as a left over by-product, and since they couldn't feed
it to the animals, except in small amounts, they had to find another big
market which, of course, was human consumption.
This excess soy
production and its protein residue was the motivation for the
multi-million dollars spent on advertising and intense lobbying of the
Food and Drug Administration (FDA), which resulted in about 74 percent
of U.S. consumers believing that soy products are healthy. Australia has
traditionally prided itself as being a dairy consuming nation, due to
the fact that we have such abundant supply of cattle. However, lactose
intolerance is becoming a health concern recognised by the medical
profession; accordingly, soy is becoming very popular as an alternative
to dairy, following in the footsteps of US consumers in believing that
all soy-based products have health benefits. In reality, the research
that has concluded that all soy products are healthy is far from
accurate, and very much skewed by economic motives.
Let's examine why soy products are far from healthy:
For
greater clarity, soy products are classified into two main groups:
fermented and unfermented. There are also another two sub-groups:
organic and Genetically Modified (GM). The GM soy is to be avoided at
all costs, as the hazards of GM are some of the worst innovations of
modern day bio-technology. Not only are all GM products unhealthy to
humans and animals but also to the normal plants that grow in the
surrounding area, due to the natural process of winds causing
cross-pollination, resulting in mutated species of what were once
natural variations of plants. This topic is too vast to cover in this
article but for more research, visit (http://www.non-gm-farmers.com) .
The
unfermented soy category is a most problematic one. It includes soy
products, such as tofu, bean curd, all soy milks, soy infant formulae,
soy protein powders and soy meat alternatives, such as soy
sausages/veggie burgers, made from hydrolysed soy powder.
So what is wrong with unfermented soy products?
Soy
belongs to the family of legumes. Other members of the legume family
include beans - such as adzuki, red kidney, navy, barlotti, etc., as
well as chickpeas. Peanuts are included as well, as they are technically
not a nut but a legume. All legumes and whole-grains - such as, rice,
barley, oats, wheat and rye - contain amounts of phytic acid. Being a
legume, soy contains a high amount of phytic acid. So, what's wrong with
phytic acid? A number of things - yet, in some cases, phytic acid can
also be beneficial.
Phytic acid's structure gives it the ability
to bind minerals, proteins and starch, and results in lower absorption
of these substances. Hence, phytic acid, in large amounts, can block the
uptake of essential minerals, like calcium, magnesium, copper, iron,
and especially zinc in the intestinal tract. Soy also inhibits the
uptake of one of the most important minerals needed for growth and
metabolism, iodine, which is used by the thyroid gland in the production
of thyroid hormones.
However, for non-vegetarian men, phytic acid may prove to be quite helpful, due to its binding/chelating ability with minerals.
Since
a large percentage of non-vegetarian adult males have excess iron,
phytic acid would be helpful to them by binding the excess iron. But we
need to bear in mind phytic acid will simultaneously bind other
minerals, such as calcium, magnesium and zinc. In the case of children
and menstruating women, the phytic acid in soy can be a serious
negative, as women and children need iron. In women, iron is needed to
replace the loss during their menses and in children iron is required
for growth and development.
Apart from the phytic acid-related phenomena, there are additional factors that make soy an unhealthy choice.
Soy:
* contributes to thyroid disorder, especially in women
* promotes kidney stones
* weakens the immune system
* contributes to food allergies and digestive intolerance
Perhaps
the most disturbing of soy's ill effects on health has to do with its
phytoestrogens, which can mimic the effects of the female hormone,
oestrogen. These phytoestrogens have been found to have adverse effects
on various human tissues, and drinking only two glasses of soy milk
daily for one month has enough of the chemical to alter a woman's
menstrual cycle.
Soy is particularly problematic for infants and
it would be very wise to avoid giving them soy-derived products, since
it has been estimated that infants who are exclusively fed soy formula
receive the equivalent of five birth control pills worth of oestrogen
every day. Check out (www.westonaprice.org) to find some alarming research and statistics on what can go wrong when infants and children are regularly fed soy formula.
In
order to derive some benefit from soy, consuming only fermented soy
products - such as organic miso (mugi barley and genmai miso are the
best), organic tempeh, soy sauce or tamari and natto - is the way to do
it. This is because the phytic acid, which is inherent in soy beans, has
been neutralized in the process of fermentation. Consuming fermented
soy is very beneficial in recolonizing the friendly bacteria in the
large intestine, which neutralizes the 'unfriendly' bacteria and allows
for greater general assimilation of foods and nutrients.
So,
fermented soy is of benefit and unfermented soy is not. It is not only
soy that needs to be fermented but whole-grains as well. In fact, grains
(apart from millet, buckwheat and couscous) and legumes are best
consumed after soaking them for 48-72 hours prior to cooking, which
allows fermentation to take place. The soaking of grains and beans is
also advocated in the principles of macrobiotics, which is very popular
amongst vegetarians. Yet many vegetarian restaurants do not have time or
forget to incorporate this very important process in their vegetarian
cooking and thus people who regularly eat out at vegetarian restaurants
might develop severe mineral deficiencies due to the large consumption
of phytic acid in their diet.
Another common fallacy is that soy
foods couldn't possibly have a downside because Asian cultures eat large
quantities of soy every day and consequently remain free of most
western diseases. In reality, the people of China, Japan and other Asian
countries eat very little soy. The soy industry's own figures show that
soy consumption in China, Indonesia, Korea, Japan and Taiwan ranges
from 10 to 90 grams per day. That is grams of soy food, not grams of soy
protein alone. Compare this with a cup of tofu (250 grams) or soy milk
(240 grams). Many Americans and Australians today would be consuming a
cup of tofu and a couple of glasses of soy milk every day. They might
also add veggie burgers to this, thinking they are getting their much
needed protein intake. Infants on soy formula are probably the most
disadvantaged, as that is their main source of nutrition and they ingest
large amounts of soy relative to their body weight. Often the side
effects are not noticed but, as they are growing up, runny noses,
frequent colds, irritability, severe sugar cravings and food intolerance
develop.
The summary below outlines the adverse effects of unfermented soy products:
*
Trypsin inhibitors in soy interfere with protein digestion and may
cause pancreatic disorders. In test animals soy containing trypsin
inhibitors caused stunted growth.
* Soy phytoestrogens disrupt
endocrine function and have the potential to cause infertility and to
promote breast cancer in adult women.
* Soy phytoestrogens are
potent anti-thyroid agents that cause hypothyroidism and may cause
thyroid cancer. In infants, consumption of soy formula has been linked
to autoimmune thyroid disease.
Vitamin B12 analogs in soy are not absorbed and actually increase the body's requirement for B12.
Soy foods increase the body's requirement for vitamin D.
* Fragile proteins are denatured during high temperature processing to make soy protein isolate and textured vegetable protein.
*
Free glutamic acid or MSG, a potent neurotoxin, is formed during soy
food processing and additional amounts are added to many soy foods.
* Soy foods contain high levels of aluminum which is toxic to the nervous system and the kidneys.
Source: (www.westonaprice.org)
In
contrast, consuming organic fermented soy products is quite beneficial.
Consuming even small amounts of unfermented soy on a regular basis
could cause some adverse effects in our body. Next time you consider
drinking soy milk; perhaps instead consider oat milk, coconut milk or
goat's milk. Some people who are allergic to dairy can tolerate goat
milk and goat cheese products in small quantities. Replacing soy and
regular milk with these alternatives allow us to enjoy our beverages and
cereals without harming our health.
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