Yeah, trusting your doctor goes a long way.
Just look at how much healthier we are compared to say 100 years ago.
Obesity rates are down A LOT, it used to be that 90% of people were obese, now it's much better, they claim 1 in 3 in Murica (down almost 66%).
Metabolic and autoimmune disease also used to be quite more prevalent 100 years back but clearly with Medicine and Pharmaceutical advancements it's virtually non existent nowadays.
Also it used to be that you had a huge chance of dying of cancer, it was very rare for someone to make it to 60 years old because you would often die with cancer. Entire family clusters got wiped with cancer in the late 1800s and early 1900s. Nowadays chemotherapy, radiotherapy, immune therapy offers practically 99.9% survival rate and permanent remission.
Not just life expectancy, but also quality of life is great nowadays.
I absolutely trust my doctor. With all modern technology and diagnostic methods we have they have much better success rates and Medicine in the 2000s is great.