Do lotions help to avoid stretch marks during pregnancy? some women swear by them and some don't. i've read that it's a genetic thing. what does work?

Striae gravidarum: There is a strong genetic predisposition to formation of stretch marks during pregnancy. Although they fade after delivery, they do not disappear. There is no proven preventative or treatment measure. There are some creams, which have been shown to be effective during the active phase in some studies but not in others. Newer laser/light therapies may have some promise.

Probably not.: Keeping your skin hydrated is always a good thing, but it's no guarantee that you will avoid stretch marks. For every product that people swear works like a miracle, you'll find others posting that the same cream didn't work. Whether you choose to use lotions/creams or not, remember that stretch marks are a proof that you brought new life into this world, and thus are a badge of honor. Good luck!