Yes, weight gain is a common symptom of hypothyroidism, which occurs when the thyroid gland does not produce enough hormones. The thyroid hormones regulate the body's metabolism, and when there's a decrease in their levels, the metabolism slows down, leading to weight gain. In addition, hypothyroidism can also cause fluid retention, which can contribute to weight gain.
However, it's important to note that weight gain can also be caused by other factors, such as hormonal imbalances, a sedentary lifestyle, and unhealthy eating habits.
Thyroid's Role in Weight Management: Signs of Hypothyroidism.