Thyroid Health Basics

Diabetes & Endocrine • Medically reviewed February 2026by the Cedarcrest Health clinical content committee

The thyroid is a small, butterfly-shaped gland at the base of the neck that produces hormones affecting nearly every system in the body, including metabolism, energy, and heart rate. When the thyroid produces too much or too little hormone, it can affect how you feel from day to day.

Underactive and Overactive Thyroid

An underactive thyroid, called hypothyroidism, can lead to fatigue, weight gain, feeling cold, dry skin, and constipation. An overactive thyroid, called hyperthyroidism, can cause weight loss, a rapid heartbeat, feeling warm, and nervousness. Both conditions can develop slowly, which sometimes makes symptoms easy to overlook or attribute to other causes.

Thyroid problems are diagnosed with a simple blood test that measures thyroid hormone levels along with a hormone from the pituitary gland that signals the thyroid to work. Your provider may also check for thyroid antibodies or recommend imaging if a lump or swelling is noticed in the neck.

Living With a Thyroid Condition

• Keep regular appointments so hormone levels can be monitored over time.
• Report new symptoms, since thyroid hormone needs can change.
• Ask how other medications or supplements might interact with your treatment.
• Bring questions about energy, weight, or mood changes to your visits.

Most thyroid conditions are manageable once identified, and many people feel significantly better after treatment begins. Because symptoms overlap with many other conditions, a blood test is the most reliable way to know what is going on.

If you have noticed changes in your energy, weight, or how your skin and hair feel, talk with your Cedarcrest Health primary care provider about whether thyroid testing makes sense. Call (814) 555-2650 to schedule an appointment.

Page last reviewed: 05/09/2026