Can underactive thyroid cause weight loss?

I track my weight and health metrics daily, and typically, hypothyroidism is linked with weight gain, not loss. If you are experiencing unexplained weight loss, it's a good idea to log your food intake and share it with your doctor. They might need to adjust your thyroid tablet dose.

I totally get how confusing it is when your symptoms don't match the typical textbook descriptions. While an underactive thyroid usually causes weight gain, everyone's body reacts differently, or your medication might be slightly off. Please talk to your doctor so they can help you figure it out.

It is rare for underactive thyroid to cause weight loss, so please check if your medication dose is too high. Take care.

Actually, weight loss is a symptom of an overactive thyroid, while an underactive one slows everything down. If you are already on levothyroxine, losing weight might mean your body is getting too much hormone. It's a simple fix, just get your doctor to review your dosage.

My mother always tells me that any sudden change in weight should be checked immediately. Since underactive thyroid usually leads to gain, losing weight could mean your body's hormone levels have shifted. Please consult your physician to get your blood checked properly.