While a part of me thinks that statistics are just nonsense, there is a fair chance that there is a ring of truth to this. If you are seriously overweight, then theres a fair chance your self-esteem is running pretty low. And a higher chance that if you get lucky, you may not have the confidence to insist on contraception. For many people, obese or not, sex equates with love, or being wanted and desired. Well, for most people, I would think. So those who think themselves unlovable, and who dont love themselves so much, probably find after slapping on the beer goggles, that they have a false sense of self confidence which propels them into doing risky things.