Proliferation Crisis

I just noticed today that a new donut store is opening on P Street NW. That makes three donut stores (that I know of) around Dupont -- Dunkin Donuts on 17th and Krispy Kreme at the Circle are the other two. A few years ago, there were none. What is going on here? Who is eating all these donuts? How do you eat donuts regularly without getting fat?