30 Thyroid Symptoms That Are Too Important to Ignore

27. Depression

Hypothyroidism can slow down your nervous system, making it harder for your body to use energy efficiently. When that happens, it can leave you feeling drained, sluggish, and more likely to experience mood swings. Many people with thyroid issues also report feeling depressed, even when there doesn't seem to be an obvious reason. The good news? Hormone replacement therapy can often help lift those heavy feelings and improve your mood, as it helps your body get back on track.