During a library book sale, I picked up a book that had "Eat
Right 4 Your Type" scrawled across the cover and immediately thought it was
interesting. Is a diet based upon your blood type justified?
A Little History
Believe it or not, different blood types appeared at
different times in history. Blood Type O is the oldest blood type in the world,
and is said to have evolved around 40,000 BC when people were mainly
meat-eaters. Blood Type A evolved between 25,000 and 15,000 BC when people were
becoming farmers and starting to domesticate animals. Blood Type B appeared
between 15,000 and 10,000 BC. Lastly, Blood Type AB appeared as an adaptation
of Type A and Type B blood. Type AB has only been around for 1,000 years. There have been contradictions to the blood type evolution.
Most people have Blood Type O, while less than 5% of the
population has Blood Type AB.
What Can I Eat?
Blood Type O
People with Type O blood are likely to have more acid in
their stomach, which means that they can easily digest animal protein.
Unfortunately, this also predisposes them to diseases like peptic ulcers, which
are a result of too much stomach acid. The book goes on to state that this
blood type also usually has low thyroid hormones, so it is recommended to
include foods with natural iodine to stimulate the thyroid.
Blood Type A
This blood type does not do well with animal-based proteins
and should instead use soy or tofu-based proteins. Blood Type A doesn't produce
enough acid in stomach, making it difficult to digest the animal protein. Low
stomach acid predisposes persons with this blood type to getting stomach
cancer.
Blood Type B
People with Type B blood can tolerate most foods equally
well. They tend to have a problem with gluten, but often take dairy very well
(as opposed to Type O and A).
Blood Type AB
This blood type combines the best and worst characteristics
of Type A and B. With some exceptions, if a food is bad for both Blood Type A
and B, it is bad for Type AB. This blood type also does not digest animal
protein well, similar to Type A.
So what do you think? Do you think that your blood type
should determine what foods you should eat? Does this diet hold any merit?
To read more about this diet and to see my resource, see this
link.
Critiques of the Blood Type Diet.
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