You must have read and heard about thyroid many times before. When you feel extremely tired, unexplained hair loss, periods are late or your hands and feet automatically start trembling, you worry all the time, suddenly you are sweaty and you feel hungry, then these Ignoring the signs can prove to be a big mistake for you. These are some of the common symptoms experienced by people throughout the ages. This often happens to you when your thyroid gland becomes overactive.