Of course medicine has extended life - how could it be argued otherwise?
Your example of these Himalayan folk have almost no bearing on the question
since they experience virtually no modern medicine. And that medicine has
extended lifespans in the West is without question.
> To any doctor or scientist who is arrogant and ignorant enough
> to think that scientific medicine has extended life consider this;
>> Hunza is a country of eighteen thousand people in the Himalayas.
> In this country it is not unusual for people to live to 100 and well
> beyond in very good health.