Flip side - Many doctors will see a high cholesterol number and immediately try to put you on statins. Which is not really that clear cut, statins have a lot of side effects that are downplayed by the sellers - and a lot less potential upside in otherwise healthy people with high cholesterol (because the fundamental cholesterol test given is flawed, the better tests are more expensive and harder to read (variables like cholesterol size and such matter a lot, but not even in the standard test))

So sure - get health checks done. Then be prepared to spend weeks or months double checking what your doctor is telling you, and possibly getting 2nd opinions and more tests.

Personal story: Head health test. High A1C. Diagnosed Diabetic, despite being a very fit triathlete who hasn't drank soda in 6 years and eats < 20g of sugar a day. Literally had near 2 weeks of full blown panic attack. Tried to change my diet to crazy low glycemic index food and eat 8 times a day to try and get my A1C down without medicine.

2 weeks later got into a 2nd doctor for another opinion. Turned out my test was just bunk. A1C is fantastic. Apparently it happens all the time (a bad test). My first doctor did not tell me this at ALL.. just told me I was a diabetic and to stop drinking so much Soda.

My takeaway? If not showing signs, don't bother with routine tests. Too many medical quacks.