I was asked by my good friend Amanda who is an adoptee to write a guest blog post on her amazing adoption blog. The gist was to give her readership who would be mainly adoptees or those interested in adoption some insight into how adoption and donor conception have some similarities.
It is certainly not an exhaustive or extensive comparison but rather an introduction to the links between the two.
http://www.declassifiedadoptee.com/2013/01/what-do-you-mean-half-adopted.html
Thoughts of donor conception practices from a donor offspring whose views changed dramatically once he had children of his own. This event has lead me on a quest to find my true identity, heritage, family health history and genetic relations (both donor and siblings), for myself and for my children.
Saturday, January 19, 2013
Monday, January 07, 2013
Me and 23andMe: Healthy Genetic Genealogy
I’ve discussed previously some genetic genealogy that I had
done with FamilyTreeDNA, this time I did a test with the company 23andMe. Not
only do they do matches with relatives based on over 1million markers but also
test for some health traits that may lie within your genes.
In regard to the relative finder test, I didn’t receive any
close matches and I actually have far fewer matches with 23andMe than I do with
FamilyTreeDNA. So no luck tracing my paternal family there.
What was interesting was the ancestral regions from which my
DNA supposedly belongs. It showed 99.5% European DNA with 0.5% unspecified.
Given my physical appearance it is hardly surprising although I was surprised
that no other ethnicities had even a small imprint on my DNA. Europe was further
broken down with the majority belonging to Northern European and of that the regions
that had the greatest bearing on my DNA was German, British Isles and France.
With my known maternal ancestry this certainly fits, so it is nice to see some
accuracy in that respect.
The health analysis is what really drew me to the 23andMe
test. While it must be stated that they typically report increased or decreased
risk ratios, which do not mean one or the other that you will or won’t get
something, it is nice to know some of these in case preventative lifestyle
measures can be undertaken to improve your prospects. While I am certainly not
going to go into much detail as it really isn’t anybody else’s business, I was
quite happy with my results. There was nothing outstanding for me to worry
about, in fact it was rather reassuring. Although it doesn’t mean that I will
be carefree in my approach to life. All of the factors that I had an increased
risk of were well under 2 fold increased risk and therefore not of enormous
concern. Some of these I already knew would potentially be on the cards due to
other conventional health tests that I have undertaken, so once again a certain
degree of accuracy. There were some with decreased risk ratios such as type-2
diabetes. However given that my maternal family has a history of it, and
perhaps my paternal side negated that increased risk, I won’t be taking that as
a passport to sugar oblivion. I still think I need to be careful. Part of the
tests showed that I wasn’t the carrier of many genes associated with certain
diseases so it is fantastic to know that I haven’t unwittingly passed something
on to my own children. Some of the less scientifically validated linkage
analysis, things I would consider fun factorials are good for a bit of a giggle
such as I should be able to metabolise caffeine quicker than the average
person, although I would say the suggestion that I should be a sprinter would
be incorrect.
All in all the relative finder result was disappointing but
that is through no fault of 23andMe, I just need people who are closely related
to me to take the test. The historical linkage to places of origin even though
they can be thousands and thousands of years ago, is nice for someone who only
knows where half of my family comes from. This at least gives me some sense of
where I am originally descended from. And the health analysis, while it cannot
be classed as definitive, was great seeing as though I am missing half of a
health history and it allows me to be proactive in lifestyle choices.
Thumbs up.
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