Hypothyroidism is strongly associated with weight gain. 1 In fact, weight gain is one of the most common symptoms of hypothyroidism—and is what ultimately leads many people to the diagnosis of thyroid disease.

How much weight do you gain with hypothyroidism?

About half of people with hypothyroidism experience some weight gain. Most people usually gain only 5 to 10 pounds; however, some women can gain more, especially if the hypothyroidism is severe. While most of the weight gain is mainly increased salt and water retention, some of it can be due to increased fat gain.

Can thyroid cause belly fat?

Weight gain

Even mild cases of hypothyroidism may increase the risk of weight gain and obesity. People with the condition often report having a puffy face as well as excess weight around the stomach or other areas of the body.