My cognitive decline began prior to taking meds regularly. It was put on “fibro fog” and it seemed to answer the “why” for a time. Some here know I use cannabis but this started far before I used it in any meaningful capacity........I thought it might have been from drinking but I’m unsure. I might have caused it myself or perhaps not. Some are sure I did, some assure me I didn’t. I’m not stupid but I fail to see obvious things often.