“suffered a brain bleed when he fell in his studio a couple weeks ago”
Damn...I’m 74 so this hits close to home. I’m on a blood thinner because COVID caused blood clots 15 months ago. I could see something like a fall causing a brain bleed.
I continue to venture out into the wilds on my own, though. Did a 7.8 mile loop through the Diablo Range a couple days ago and did not pass a single person. Did a 3 mile out-and-back in the Santa Cruz Mountains today and passed only two people. At least I’ve got my Garmin checking in for me and it’s got an “SOS” button to summon Search and Rescue if needed.
I have mentioned this elsewhere. When you reach a certain age, it’s time to get a cane. Put your ego aside, and get a cane.
I doesn’t have to be a drab “old man” cane. Get yourself a stylish, fancy one.
Heck, even Bat Masterson carried a cane.

If I may make a suggestion:
Go with someone on your hikes. Ask your doctor if that is a reasonable approach. There are other risks beside hitting your head when you are taking blood thinners.A spontaneous bleed for one.
Good luck and enjoy those hikes safely.
IMHO
Good for you! Keep on trucking. I have friends in their mid 80’s who still walk at least 6 miles everyday, and the husband rides 20 miles on his bike after that!
look into/eat to lessen your body’s inflammation. excess inflammation (stress and so many of our “foods” today) causes irritation to our tissues including veins etc. that includes through the brain, heart etc. prolonged inflammation even in thin people, leads to clots, heart episodes, diabetes, cancers, etc.
cut or drastically reduce any crap food. so much unnecessary health issues due to our body eating so much processed foods it wasn’t made to handle.
we aren’t garbage disposals, we are finely designed works of art by God. Unfortunately too many people eat like trash compactors and over time, full up of chemical imbalances or weakened parts due to corrosion by toxins we took in.
Animals have instinct to avoid many foods we eat!
if you are already eating primarily whole natural foods, then disregard :)