My whole family did the tests, and unless the results indicate that one individual is a "cuckoo," the findings are usually so vague and at times laughable (my Jewish-Russian mother-in-law discovered that she had "Peruvian" ancestry!) there's no possibility of harm being done (unless you are completely naive and place too much faith in the tests).
For medical use, such tests serve a great purpose, to warn potential parents what recessed genes may be passed on to any unborn children.
THOSE tests are much more refined, and provide detailed findings about specific gene sequences and the possibility of hidden genetic disorders! Here the possibility of the subject suffering psychological distress is much greater!
Of the people who really get into ‘researching’ their family tree, I have found some are truly just curious, while others are searching for something that is missing in their lives.
This is a different topic. Anyone who has invested any effort in seriously researching their family tree will experience NO surprises when viewing his "ancestry.com" test results.
Some are searching for something that would explain why their lives are developing as they presently are. It’s almost like consulting a Quija Ouija Board for answers.
True.
Regards,
Siberians migrated to Peru.
Some of them also went west to the Baltic region. So, yes, eastern Europeans can have the “Peruvian” DNA.