A small gland located in your neck in the front side of your throat is called the thyroid gland, which produces a hormone that helps control many vital functions of your body. The dis-functioning of this gland can impact your entire body and may lead to hyperthyroidism or hypothyroidism. Hyperthyroidism (overactive thyroid) occurs when your thyroid gland produces too much of the hormone thyroxine. Hypothyroidism (underactive thyroid) is a condition in which your thyroid gland doesn't produce enough of certain crucial hormones. 

Hyperthyroidism and hypothyroidism can lead to sudden weight gain or sudden loss of weight, respectively. Thus, for the proper functioning of the thyroid gland, it is necessary to maintain a healthy diet routine and a healthy lifestyle. An unhealthy lifestyle can result in dis-functioning of the thyroid gland, lead to weight gain and develop other lifestyle disorders such as diabetes, cardiac issues, etc. 

Following are two important facts you need to remember if you have thyroid problems:

1. It is very important to keep a minimum gap of 30 minutes before you take your thyroid medicine, after eating a meal. Even having a cup of tea is not a good idea if you just had your thyroid medicine. The reason behind this is that your absorption of medicine is affected and it will not work properly. 

2. Eating a balanced diet is very important for the proper functioning of your thyroid gland as it releases hormones that control the entire body’s mechanism. 

In conclusion, having a thyroid problem is not an excuse for being overweight and not been able to lose weight. Regular body checkups will help you identify a thyroid problem.