Is this for me? Your health can suffer as a result of an overactive or underactive thyroid. A healthy thyroid ensures that your metabolic rate, energy levels, brain development, and digestion all work properly. Getting your thyroid levels checked can make a huge difference in your overall health and well-being Symptoms of thyroid-related issues: Easy weight gain; Fatigue; Muscle aches; Difficulty sleeping; Anxiety or depression; Dry skin and hair; Brain fogginess