It's honestly down to us.  We need to reverse the "Idiocracy" statistics and start making sure we're either having kids or adopting them or in some way influencing the newer generations.  This, I feel, is the only way to be able to guarantee any kind of continuation of humanity.  I fear for the long-term effects of epigenetic fuckery brought on by the obesity epidemic.  Not that I believe the "oh fat is genetic" bullshit, but in my college studies I am finding out more and more about just what an awful shitstain fat people are on the genetic pool.    Children born to obese mothers have such ridiculous risk factors for a number of illnesses and conditions that have to be closely controlled and monitored throughout their lifetimes (insulin resistance being one of them of course), not to mention behavioral and intellectual issues brought on by their time in a basically toxic womb.     Then there's gene expression itself- and something that wasn't meant to be coded into proteins/hormones/etc might pop up because of methylation effects at the chromosomal level being dicked with (in layman's terms it means that parts of our DNA that are normally coiled up and inaccessible to the "script readers" in our bodies, are all of a sudden available to read)- and of course the reverse of that where certain important or supplemental genes are hidden away. It's horrifying to think about sometimes.