The thyroid gland is a butterfly shaped hormonal gland located at the base of the front of the neck, just above the sternal notch.  It measures about 4 cm x 2 cm x 1cm and normally weighs a meager 20 grams (about four nickles)!  It may be small, but it can be the source of profound symptoms and medical problems.  The thyroid plays an important role in just about everything the body does – including metabolism, temperature regulation, cardiac function, cognitive performance, energy levels, etc.  A low thyroid, known as hypothyroidism, typically causes fatigue, brain fog, constipation, dry sometimes puffy skin, and weight struggles.  A high thyroid, known as hyperthyroidism, may result in rapid heart beat, over-heating/sweating, hair loss, insomnia, and anxiety.  Although hypo- and hyper-thyroidism seem like polar opposites, the majority of people with any type of thyroid condition report generalized fatigue as the major symptom.