One of the major issues is what they are primarily composed
of: the grains. According to a
growing number of experts, including Dr. Loren Cordain, a professor at Colorado
State University and an expert on Paleolithic lifestyles, humans are NOT
designed to eat grains, and doing so may actually be damaging to your gut. The
problem isn't only that they are inferior sources of nutrients compared to
foods like fruits and vegetable; grains actually contain anti-nutrients
that may damage your health. Ironically, we're often told that whole grains are
the best for our health, but the high-fiber bran portion of grain – a key part
that makes it a whole grain -- actually contains many anti-nutrients that
may increase intestinal permeability and lead to leaky gut syndrome.
Gliadin
Gliadin is the primary immunotoxic
protein found in wheat gluten and is among the most damaging to your health.
Gliadin gives wheat bread its doughy texture and is capable of increasing the
production of the intestinal protein zonulin, which in turn opens up gaps in
the normally tight junctures between intestinal cells (enterocytes).
In celiac disease the body will make
antibodies to gliadin after it is digested by the intestinal enzyme tissue
transglutaminase, resulting in severe autoimmune damage to the delicate,
absorptive surfaces of the intestines. It does not, however, require full blown
celiac disease to suffer from the adverse effects of this protein. In fact, it
is likely that our intolerance to gliadin and related wheat proteins is a
species-specific intolerance, applicable to all humans, with the difference
being a matter of the degree to which it causes harm. This helps to explain why
new
research clearly shows gliadin increases
intestinal permeability in both those with, and those without, celiac
disease.
Lectins
Lectins are a key mechanism through
which plants protect themselves against being eaten, and are found in highest
concentrations in their seed form -- which makes sense, considering that seeds
are the plants' "babies" and whose survival ensures the continuation
of their species. When animals consume foods containing lectins, they may
experience digestive irritation, along with a wide range of other health
complaints. The degree to which the adverse effects are expressed depends
largely on how long that species has had to co-evolve with that particular form
of plant food it is eating. Since humans have only been consuming unsprouted
grains and beans in large amounts for approximately 500 generations, we still
suffer far more than certain rodents and birds, who have had thousands of
generations longer to adapt to this way of eating.
We are mostly
exposed to lectins from grains, beans, dairy products and nightshade plants,
such as potato, tomato, and chili peppers. However, bread wheat (Triticum
aestivum) has a prominent role to play in lectin-induced adverse effects,
due to the fact that it is a relatively new form of wheat, and contains wheat germ agglutinin
(WGA) – a particularly resilient and problematic lectin, considering it is not
eliminated through sprouting and is actually found in higher concentrations
in whole wheat.
Sugar
A new report
from the Environmental Working Group (EWG)
revealed that many popular children's cereal brands contain more sugar than
snack cakes and cookies. For instance, one cup of Kellogg's Honey Smacks, which
is nearly 56 percent sugar by weight, has more sugar than a Twinkie,
while a one-cup serving of 44 other children's cereals analyzed contain more
sugar than three Chips Ahoy! cookies.
If you need a recap of why sugar is
a health disaster, we have posted other blogs on this topic. However, as it
pertains to leaky gut, you should know that sugar, like grains, can upset the
balance of bacteria in your digestive tract, encouraging damage to your
intestinal lining that can lead to leaky gut. So, sugary children's cereals are
a double-edged sword, assaulting your gastrointestinal tract with both damaging
sugar and grains.
For breakfast, try focusing on
healthy protein choices, quality fats and fruits and vegetables to get your
body and brain started off in high gear and fueled for the day to come!
In Health,
Dr. Brad Niewierowski
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