|MadSci Network: Genetics|
I doubt I can give you the answer you're looking for. I don't believe that there is anyone you could see that would be able to identify whether these changes are harmful or beneficial. There are some fictional books that deal with these kinds of ideas - in particular Darwin's Radio by Greg Bear. Remember that evolution is something that occurs very slowly over extremely long periods of time (in comparison to our life spans, for example). There is no way to predict what traits in a given individual alive right now would enhance their survival and increase their representation in the gene pool. There are some labs that could potentially reveal harmful aspects by analyzing your DNA and looking for genes that can lead to cancer or other problems. Accept their data with the understanding that nothing in science is absolute and evidence of cancer genes does not necessarily mean you will get cancer and a lack of cancer genes does not mean you won't get cancer. There are numerous studies with evolutionary implications going on looking at human physiology, anatomy and genetics but again these apply to populations. One interesting finding from HIV studies was that one version of a particular gene confers resistance to HIV infection. A substantial number of Caucasians have this gene. When researchers asked why this gene was so prevalent in Caucasians, they found that the percentage of people with this gene virtually exploded during the middle ages. Further research found that this gene may also confer resistance to plague. So this is evidence of human evolution in action - those with the gene were more likely to survive and the number of people with that gene survived. But you can also see the opposite. Looking at humans from the beginning to the end of the 20th Century leads to some interesting findings. In the United States alone lifespan has increased by 30 years, people have became taller, stronger, and heavier. But this was not the result of evolution - this is all due to changes in diet and innovations in food preparation, hygeine & medicine. Highly recommended reading: The Selfish Gene by Richard Dawkins - 30 years old but the theories in it are still sound and they go a long ways towards explaining why evolution occurs and how even human behavior can be explained by our genes.
Try the links in the MadSci Library for more information on Genetics.