Love the night life? It ain't loving you back. In fact, it's killing you -- and I'm not talking about a night out drinking, smoking and playing cards with the guys.

All that's downright healthy if you do it right -- but there's nothing healthy about a steady night job other than the paycheck.

Shift work can give you cancer, obesity, heart disease, sleep disorders (obviously), stress problems and more -- and now, the latest research finds it'll up your odds of type 2 diabetes, too.

And you don't even need to work the night shift full-time to face that last one, because a new look at data on nurses finds that just three nights a month is all it takes.

A single year of even that limited night duty boosted the odds of diabetes by 5 percent -- and while that may sound small, it didn't stay small.

After three years, the risk hit 20 percent... 40 percent after a decade... and 58 percent among women unlucky enough to spend two decades working at least three nights a month.

The study didn't go into the hows and whys, but all the usual suspects apply: People who work at night don't just have lousy job hours -- they get lousy sleep, eat lousy food and have lousy habits.

And beyond that, the human body simply wasn't designed for the life of a vampire. When you throw your circadian rhythm out of whack, your hormones follow -- and all those off-schedule ups and downs can have a devastating effect on your entire biology.

Bottom line here: Don't just get a good night's sleep -- make sure that good night's sleep actually happens at night.