I am mid 60's, have leukemia and was riding MTB daily right into my diagnosis. My body was a mess with bruises everywhere from pretty much no platelets at all in my blood. A mixed blessing was that I didn't have many RBCs either so not very aggressive riding. After chemo I was left with severe arrythmias from heart damage we suspect. I went on Xaralto for only a couple weeks then was restarted and put on some meds that are working so far. When/if they stop working, a pacemaker is next. A year later and I had a smallish stroke but no more blood thinners recommended and my heart is working pretty well but not perfectly.
My non medical advice is to work through it, take precautions like always carry super glue, bandages, tourniquets, and clotting wound dressings but have fun. Of course talk to your doctor but be aware that most will take the most conservative route for insurance reasons. My philosophy is that it's better to burnout than to fade away, you know the song, rust never sleeps....