That was the actual headline, before someone at MSN changed it to the more PC "Study Links Obesity and Sex Issues".    I'm assuming that someone complained.  I realize that it's a "weighty" issue.  Pun intended.

Another appropriate title for the article would've been, simply, "Duh".  Or the more wordy, but equally effective, "More Cushion for the Pushin' : Not Necessarily a Good Thing". 

BBW's, beware.  Read the article for yourself.