I’ve had really bad brain fog for two different long stretches of my life. The second time it started out because of longcovid in 2020 but then it didn’t stop after other longcovid symptoms alleviated. I found out I was allergic to many types of mold that commonly grow in buildings, something like 1/5 or 1/4 people are. Apparently the first time I had really bad brain fog was because the school I was attending had terrible fucking mold and water damage everywhere

For me brainfog appears to be mostly about environmental factors, mainly mold but really dusty places will also give me brainfog. Also eating the wrong foods will do it too. I have dairy and gluten sensitivities ever since COVID so if I eat those foods it can really fuck with me cognitively

Clean air, healthy food, clear mind

Dirty air, processed food, brainfog