Your thyroid is a butterfly-shaped gland in your neck, just above your collarbone.  It is one of your glands that makes hormones.  Thyroid hormones control the rate of many activities in your body like your heart rate or how fast you burn calories.Ensuring that the thyroid gland is healthy and functioning properly is vitally important to the body’s overall well-being.. According to WebMD, the two most common thyroid problems are:

1) Hyperthyroidism which means that the thyroid produces too many hormones. 

2) Hypothyroidism, means that the thyroid is not producing enough hormones, this condition can be very common in people as they age 

The good news is that the vast majority of these diseases can be controlled well if they are discovered on time.

For more information visit: https://www.webmd.com/women/guide/understanding-thyroid-problems-basics

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3401753/#