This 162 000 plus person retrospective (looking backwards) cohort (at a group) study answers a long standing medical question about “optimal” thyroid function and provides reassuring evidence that the functional medicine reference ranges for TSH of around 2.0 mlU/L clearly reduces many important health related outcomes, including all cause mortality, atrial fibrillation, ischaemic heart disease, heart failure, stroke/transient ischaemic attack, fractures,…
