Sorry to hear, thanks for reporting. Am in my 50s. I did notice a drop off in deep reading and attention capacity in my early 40s, including seemingly physical

Sorry to hear, thanks for reporting. Am in my 50s. I did notice a drop off in deep reading and attention capacity in my early 40s, including seemingly physical issues like line skipping, transposing and other weirdnesses that I never had before. I definitely feel like I am back to higher functionality in my 50s, though the reading process is definitely different. If you are familiar with Kahneman metaphors of System 1/System 2, my reading when I was younger used to be System 1 (quick, ingestion for memory rather than concept, etc) and now it is almost entirely System 2 (slow, conscious, model building). So it is slower, but definitely deeper, and maybe on balance more efficient. In terms of what helped- I recall noticing this reading issue and being unhappy about it, and making a conscious effort to practice...which means what exactly? Not sure. I don't experience those seemingly physical issues anymore of transposing or skipping. And while I have had distance glasses since my teens, I still don't require reading glasses. Am sure at some point I will. One odd association here fwiw is that I am very careful these days about staying fully hydrated when doing intellectual work. I drink very large quantities of water- up to and over a gallon some days. I never feel thirsty but when I start to notice subtle intellectual deficiencies, or my attention is sagging, I go and drink 16 or 32 ounces of water, and then often performance improves. Sometimes I take a bit of salt as well. Seems bizarre to me, I don't understand the biochemistry. But it works like a charm. This is a recent practice for me- last 5-10 years. After sleep, staying very hydrated is the top of the maintenance list. Good luck to you.