Learn how some healthy habits can take a turn, leaving you with negative side effects. Dr. Oz shows you how to stop the healthy habit backlash.

Click here to watch Part 1.

After years of trying to get pregnant, doctors told Kelsi Pierce it would be near impossible for her to conceive a child. However, Kelsi got the surprise of her life when her mom volunteered to be her surrogate — and she found out she, too, was pregnant!