Seems to me like a misattribution of an underlying factor. Correlation also isn't causative, and its more likely that the process of digestion is what's causin

Seems to me like a misattribution of an underlying factor. Correlation also isn't causative, and its more likely that the process of digestion is what's causing the difficulties. It takes a lot of energy to digest stuff and that can continue for several hours depending on the food, and your brain uses a lot of energy too. I'd first check off the physical stuff, then the wellness stuff, if you want to improve your game. Depending where you live, a lot of people have been exposed to things that can impact that as well. Heavy metals being a big one that isn't easily checked by a blood test because it doesn't float around in blood except in acute exposures, and tends to quickly lock up in fat or bones or so doctors have said. Also, people have biases where if they notice something they are more likely to notice it and potentially draw a link where there is none.