Hello Mr Gupta.
The dose has been kept the same in view of your age (being 60 years). If you have typical symptoms of hypothyroidism
like aches and pains, swelling of body, uncontrolled BP
, and cholesterol
then better to increase the dose slightly but not to 75 mcg/ day.
But if you are asymptomatic then the best thing to do is to follow your doctor's advice as he/ she has considered your age appropriately for this TSH level
Get back for any related query. Take care.