4. Weight Loss
When it comes to losing weight, most of the time it is considered to be a good thing. However, there is such a thing as unhealthy weight loss. When your body is producing too much of the thyroid hormone it can cause you to lose weight. It can be easy to welcome this, but it really is not healthy to lose a bunch of weight quickly.
As the thyroid hormone starts to build up, food is processed at a faster rate. When this occurs all of the nutrients from the food that you are eating do not get into your body. This is similar to a diet or even a famine as your body is going to respond by burning fat. If you have started to lose weight and have not made any changes to your diet or started an exercise program, it is possible that Graves could be causing this inexplicable weight loss.