Common Symptoms Of Thyroid Disorders You Need To Know

Rapid Heartbeat, Irregular Heartbeat, Heart Pounding

Since thyroxine has much to do with regulating heart function, specifically, the force and speed of your heartbeat, an excess of the hormone in your system will directly impact this vital organ. Too much T4 will cause your heart to work harder by upping the amount of oxygen it requires, as well as increasing the force with which it contracts as it beats. This will manifest in ways such as a faster than usual heartbeat (tachycardia), irregular heart beat or beat skipping (arrhythmia), or a perceptible pounding, fluttering, speeding up of your heartbeat (palpitations).