What is a thyroid dysfunction?
Thyroid dysfunction, which is usually caused by any type of stress, poor diet, nutritional deficiencies or environmental toxins, is another common cause of SPENT™. One of the major functions of the thyroid is to control metabolism and if your metabolism slows down, you feel tired, you become irritable, anxious, sometimes depressed and eventually SPENT™. You also put on weight or have a hard time losing weight however well you eat and exercise.
