A simple definition: A web service is a function that can be accessed by other programs over the web (Http). To clarify a bit, when you create a website in PHP that outputs HTML its target is the browser and by extension the human being reading the page in the browser.
Although a lack of dietary iodine is the main cause of goiter in many parts of the world, this is not often the case in countries where iodine is routinely added to table salt and other foods. 1  Graves' disease. 2  Goiter can sometimes occur when your thyroid gland produces too much thyroid hormone (hyperthyroidism). Goiter can sometimes occur when your thyroid gland produces too much thyroid hormone (hyperthyroidism). 2  In Graves' disease, antibodies produced by your immune system mistakenly attack your thyroid gland, causing it to produce excess thyroxine.
Autoimmune diseases are caused by the overreaction of an individualâs immune system. The immune system provides the body with protection from threats such as parasites, bacteria, fungus and viruses.In the case of an autoimmune disease, the body mistakes normal body tissue to be a threat and attacks it.he most common autoimmune diseases are listed below. 1  Hashimotoâs Thyroiditis: This is a chronic thyroditis condition that afflicts the thyroid gland, which is necessary for the production of hormones that regulate our bodyâs usage of energy or metabolism. 2  It often results in hypothyroidism.