Thyroid Trivia: Women are more likely than men to have thyroid issues. One in eight women will develop thyroid problems during her lifetime, particularly after pregnancy and during menopause. The most common thyroid condition is hypothyroidism. Some symptoms include fatigue, feeling cold, muscle weakness and unexplained weight gain. Stay tuned for more of our trivia and fun facts of each of our organ friends! Get the wonderful Nerdbugs Thyroid Plushie Organ as a gift for a loved one in your life!