I'll try and find the sources in a moment, but it basically said we're evolving faster to adapt to our very rapidly changing way of life.
In what way, I think I heard somethign abotu dealing with increasing amounts of fat(s) by way of increasing our metabolism and whatnot, but I'll have to double-check.
And if you consider it, it could be evolution to our survivability in a culture where surviving is easy but bad health choices are rampant.