Can poorly controlled hypothyroidism (TSH 11.9 uIU/mL on thyroxine 75 mcg) be the underlying cause of persistent hypertension (137/99 mmHg despite taking amlodipine 5 mg) and severe dyslipidemia (total cholesterol 283 mg/dL, LDL 198 mg/dL, HDL 55 mg/dL) in a 30-year-old female (BMI 28.3 kg/m?) who also experiences intermittent palpitations managed with propranolol 10 mg?
Yes, your underactive thyroid can absolutely be the root cause of both your high blood pressure and elevated cholesterol. When thyroid hormone levels are low, as indicated by your TSH of 11.9, your metabolism slows down. This reduction makes it harder for your body to clear cholesterol, leading to high LDL, and increases blood vessel stiffness, raising your blood pressure. Even intermittent palpitations can be tied to these thyroid imbalances. Please be reassured that once your doctor adjusts your levothyroxine dose to optimize your TSH, both your blood pressure and cholesterol levels are highly likely to improve. I encourage you to discuss these results with your physician soon.