It seems that many of the articles regarding the thyroid gland tend to focus on the signs and symptoms of an under-active thyroid or hypothyroidism. However, it’s estimated that between 3 and 10 million people actually suffer from an overactive thyroid, or hyperthyroidism. Your thyroid, the butterfly-shaped gland in the front of your neck, produces hormones to help regulate body temperature, heart rate, growth, energy production, and brain health. Hyperthyroidism is a condition that occurs whe…