Weight Gain
Gaining weight unexpectedly can also be a sign of hypothyroidism. Low-thyroid people do not only move less, but they also signal their fat tissues, muscles, and livers to store more calories. In addition, low levels of thyroid hormones might switch modes of metabolism. This will decrease the amount of energy that you use when resting rather than burning calories for activity and growth. As a result, the body is inclined to store more calories as fat after each meal. [6]
