I've been feeling exhausted, gaining weight, and feeling cold all the time. Could this be a thyroid problem?

These are classic symptoms of hypothyroidism,an underactive thyroid gland. The thyroid produces hormones that regulate your metabolism, energy levels, body temperature, and much more. When it is not producing enough hormone, virtually every system in the body slows down. A simple blood test measuring TSH (thyroid-stimulating hormone) and Free T4 can confirm the diagnosis. If hypothyroidism is confirmed, it is highly treatable with a daily oral medication called levothyroxine. Most patients feel significantly better within 6–8 weeks of starting treatment. Untreated hypothyroidism can affect your heart, cholesterol, and mental health over time, so early assessment is important.