3 Signs Your Thyroid is "Dead" End-stage Hashimoto’s leaves you with a “dead thyroid,” meaning you are fully dependent on thyroid medication. How do you know you're in it? You'll see these signs: • Antibodies Dropping: Low thyroid antibodies may seem good, but if your gland is gone, there’s nothing left to attack. • Shrinking Thyroid: Ultrasound showing a “small heterogeneous” or atrophic thyroid indicates severe damage. • Increasing Medication Needs: Higher doses of levothyroxine, T3, or combin