Are Men and Women Different?

Jennifer, a mom from Wayne, New Jersey, says she began noticing differences in the way her brain worked after giving birth to a baby boy. "I began to lose words," she says. "I would start in a conversation, and then all of a sudden, I wouldn't be able to remember a simple word like 'tomato' or 'chandelier.'" Dr. Oz says this is a real condition known as "mommy brain."

Dr. Oz says Jennifer's son, Benjamin, used up a lot of her omega-3 fats while he was in the womb. "Eighty percent of our brains are fat," he says. "So the baby sucks up a lot of that vital nutrient, sometimes potentially to the detriment of the mother."

During pregnancy, Dr. Oz says a woman's brain also shrinks by about 8 percent. "You don't lose cells. The cells get smaller," he says. "It might be because you're focused on one thing, but the good news is after you give birth, your brain begins to rewire quickly. … Your brain actually gets more powerful than before you got pregnant."

To combat "mommy brain," Dr. Oz recommends taking omega-3 fatty acids and getting plenty of sleep. "[Omega-3 is] important because we know that it actually allows women to recover from depression faster if they have depression after pregnancy," he says. "It also allows the brain to grow."