Common symptoms of an under active thyroid:
Puffy Lids and Swollen Face
Weight Gain Easily
Trouble Up in the Mornings
More Tired at Rest than When Active
Joint Stiffness in Arm
Mental Fogginess and Lack of Concentration
Your thyroid acts as your bodys thermostat by controlling metabolic rate and maintaining body temperature. The thyroid influences every cell, tissue, and organ in the body. With decreased thyroid function, all functions of the body slow down which leads to fatigue, weight gain, constipation, depression, dry skin, hair loss, and much more. Unfortunately, most laboratory blood tests only measure a TSH level. At minimum, these four tests should be completed in order to get an accurate picture of thyroid health:
TSH: TSH acts on the thyroid gland to stimulate production of the thyroid hormones T4 and T3. An elevated TSH indicates that the thyroid is not responding to the signals from the pituitary gland to make more hormones. One can still experience thyroid deficiency even is the TSH level is within normal range.
Free T4: Free T4 is the predominant hormone produced by the thyroid gland. It is an inactive hormone, and is converted to its active form, T3, within cells.
Free T3: The active thyroid hormone that regulates the metabolic activity of every cell, tissue, and organ in the body.
Reverse T3: Increased levels of Reverse T3 are produced under periods of stress or with a deficiency of the trace mineral, selenium. An increased Reverse T3 is an indicator of an underactive thyroid.