Sorry about your brother and especially for those he left behind so suddenly.
I had 2 HA’s in quick order a few years ago. I didn’t even know I had them until my kids forced me to the ER. I was 63, in good shape and hadn’t seen a doctor in 15 years. Now I’m back to feeling good, but I take some amount of drugs and see thee different doc a few times a year.
This will kill you quicker than anything. You would be amazed at the problems that can be detected by just a physical checkup and lab work. Being a pilot and having to see a doctor twice a year has kept me alive and healthy to the age of 63. That, and living a healthy lifestyle. I can still ride bicycles with my teenage grand kids and stay with the pack. If you are over 50, you should be getting a physical exam and labwork at least once a year. (Twice a year is better.)