So many of our modern health problems stem from issues of abundance: fast food, car-friendly suburbs, and endless couch-borne entertainment.The cure for these, according to the quantified-self cult of Silicon Valley, is more data! Just collect information about every step we take, every beat of our heart, every toss we take in our sleep, everything we eat and every drop we drink, and all will be revealed.But what if the abundance of data, too, is part of the problem?Networked weight scales at MyFitnessPal headquarters.Your Data's So Big ...Mike Abbott, a partner at Kleiner Perkins Caufield & Byers, a venture-capital firm, casually dropped the term "data obesity" in a talk he gave at a digital-health event hosted by MyFitnessPal in its San Francisco headquarters Wednesday.