Obese men have worse sperm quality than leaner men

But not worse enough.

"Obese men are more than three times as likely to have low sperm counts compared with their normal-weight peers, a study out this month in the journal Fertility and Sterility shows.

The heaviest men were also at triple the risk of having a low count of progressively motile sperm -- sperm that swim forward in a straight line, Dr. Ahmad O. Hammoud of the University of Utah in Salt Lake City and colleagues found...

There has been some evidence that obesity may impair fertility in men, the researchers note, while increased body fat can contribute to lower testosterone levels and higher estrogen levels."

The "evidence" must be quite poor as the people-pig population continues to grow in number.

And with it, the scourge of nutritional child abuse.