I doubt the app would have negative side affects to the human body as I don't think it's straight up plugged into you. I think it it takes info on your dna then personalizes your experience. One thing that worries me is if the app gets hacked by terrorists and they use people's dna info to create personalized weapons. They might be able to create a personalized weapon for a certain dna range for a group of people with similar dna and stuff like that just my thoughts. Great article.