30 Thyroid Symptoms That Are Too Important to Ignore

19. You're Constantly Exhausted
This is one of those symptoms that's easy to brush off as just "life." We all have busy days, right? But if you're feeling constantly drained, even when you're not doing anything especially taxing, it could be your thyroid. Hyperthyroidism can disrupt your body's ability to recover and recharge. You might find yourself feeling mentally sluggish, having trouble concentrating, or even dragging yourself through the day.