I have underactive thyroid and I want to know how gland becomes underactive thyroid also known as hypothyroidism. I have heard that hypothyroidism occurs when the thyroid gland doesn’t make enough thyroid hormones and it results in slowing down the body’s metabolism, leading to symptoms including tiredness and putting on weight. Is it true? If someone has any idea or know about it please tell me also. I would really appreciate. Thanks a lot!
