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9 Things You Need to Know About Your Thyroid

Health Logo By Hallie Levine of Health | Slide 1 of 9: <p>Located between your voice box and collarbones and no bigger than your thumb, your <a href="http://www.health.com/thyroid">thyroid</a> affects almost every process in your body. "It produces hormones that regulate your metabolism by controlling how many calories you burn, as well as how fast or slow your brain, heart, liver, and other organs work," says endocrinologist Christian Nasr, MD, medical director of the Thyroid Center at the Cleveland Clinic. The takeaway: This <a href="http://www.health.com/thyroid/underactive-thyroid">little gland</a> plays a role in everything from your mood to your periods to your bone health—even the regularity of your number twos. Read on for all the essential intel.</p>

Your thyroid

Located between your voice box and collarbones and no bigger than your thumb, your thyroid affects almost every process in your body. "It produces hormones that regulate your metabolism by controlling how many calories you burn, as well as how fast or slow your brain, heart, liver, and other organs work," says endocrinologist Christian Nasr, MD, medical director of the Thyroid Center at the Cleveland Clinic. The takeaway: This little gland plays a role in everything from your mood to your periods to your bone health—even the regularity of your number twos. Read on for all the essential intel.

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