Gaining weight, losing weight, exhaustion, the blahs, anxiousness, insomnia, constipation, hair loss, dry skin, pounding heart, infertility -- just about any ailment that can plague a woman often can be traced back to a small, butterfly-shaped gland in the neck called the thyroid.

WebMD's Star Lawrence talks to Mary Shomon, Ken Blanchard, and others re: this common condition.

Find out more now.