Do you strive to maintain a consistent, healthy weight? Or are you on a near-constant cycle of losing weight, only to gain it back, and then dieting to lose it again?

If you're a yo-yo dieter, you might want to pay particular attention to nutrition when you're pregnant. According to a study in the Journal of the American Dietetic Association, yo-yo dieters tend to put on more weight during pregnancy.

Obviously, a trend is not a foregone conclusion. So, if you're expecting a little one and you've been a frequent dieter in the past -- don't worry. Just ask your OB/GYN for diet advice and consider consulting a nutritionist. For tips on a healthy pregnancy, check out AOL Health.