Your thyroid controls your metabolism or half fast you burn energy. Hypothyroidism is when you don’t make enough thyroid hormone. You have low energy, especially tired when you sit still. Your skin is dry. You tend to gain weight and loss hair especially the outer edge of your eyebrows. Since everything slows down, you may constipated. Without adequate thyroid hormone, your brain doesn’t function well leading to poor memory, difficulty learning, and depression. Hypothyroidism is diagnosed when your thyroid stimulating hormone – (TSH) is high, meaning your thyroid hormones – T4 and T3 – are low. Overtime taking thyroid hormone replacement shuts off your normal thyroid hormone production- if you don’t use it you’ll lose it.