You’ve often heard of people suffering from hypo or hyperthyroidism. If you’ve been putting on weight or losing it without any possible explanation it is very likely that your doctor advises you a thyroid profile. So what is the gland? Why is it so important? In this post we’ll try and answer some of the frequently asked questions on this topic. So what is the thyroid gland? A large ductless gland in your neck the thyroid has many functions most important of which is to regulate your growth and development by controlling your metabolism. Why is the thyroid gland important?