Weight loss. At this time of year, those two words are a gold-medal-like goal for many people. But sometimes, weight loss isn't necessarily a good thing.

Steve Jobs, Apple CEO, has lost massive amounts of weight recently ... and not because he wanted to. In recent months, he's been so thin, many people were afraid for his health. Jobs recently sent out an open letter to the Apple community that explains his dramatic weight loss. Jobs is suffering from a hormone imbalance. Jobs said, "The remedy for this nutritional problem is relatively simple and straightforward, and I've already begun treatment."

Unexplained weight loss can be a sign of many medical issues, such as Jobs' hormone imbalance. If you're experiencing unexplained weight loss, be sure to make an appointment with your doctor ASAP. If, on the other hand, you're on the flip side of the coin and struggling to lose unwanted pounds, check out the America Takes It Off: Shrink a Size program.