In recent years, there has been a staggering increase of diabetes in America. And, Bob Greene says, most of that is preventable.

The Best Life's lead nutritionist says every diabetic must continually monitor his blood sugar for changes.

Lisa Kogan was nine weeks pregnant when she found out—almost by accident—that she had diabetes. Two years later, she reflects on the one-two jab life gave her and what she's learned about living with out-of-control blood sugar.

Oprah, Dr. Oz, Bob Greene, Art Smith, Dr. Ian Smith and more join forces to combat America's silent killer - diabetes - on The Oprah Winfrey Show. Special in-show offer will give viewers a way to get their blood sugar tested for free.

If there were a deadly disease raging through your body, wouldn't you want to know how to stop it? Unfortunately, more than 6 million Americans are walking around with a silent killer eating away at their health, and they have no idea they're even at risk