I'm thinking my Fog issues are directly tied to my gut. I write software all day so any changes I notice immediately. I have been taking Huperzine A, DMAE and Pregnenolone for this which helps usually. I get brain fog repeatedly when..... 1. I workout in the gym (I believe this is due to increased oxygen intake) 2. I eat yogurt (there are some other food triggers I haven't completely isolated yet) 3. I'm out in the sun for a prolonged time (heat?) 4. If I am in front of my far-infrared heater. The longer the worse the fog. 5. If I am dressed warmer (undershirt/longsleeve/jacket) Does anyone believe it is in their gut and/or tied to their body temp?