Thyroid values :tsh 0.170 (0.465-4.68); t3 (liothyronine) 7.030 (4.26-8.10); t4 15.800 (10.0-24.2). shld i be worried? is treatment necessary?do i need 2 change diet

Suppressed TSH: Hi. Your indicate very mild hyperthyroidism. Those values could be a snapshot of thyroid function in transition (going more hyper, or back to normal, depending on thyroid condition). If those labs are stable, then the most likely condition is a mildly hyperthyroid ("hot" or autonomous) nodule. Those can stay stably at that level indefinitely. Risk of some cardiac arrhythmias is mildly increased