There's an issue. Baring in mind we're on a PED site so we're all about athletic enhancement we can't out-med every single thing. I'm currently reading 'Muscle, Smoke and Mirrors' by Randy Roach. It deals with the history of sports nutrition. It also suggests that the AMA (and here in the UK - the BMA) wanted the public to ignore the benefits of good nutrition over curing with medication. And here we are.
It's quite normal to not be quite as sharp as we once were when we were younger. The onset of dementia in the elderly is no great surprise. That's not to say you can say 'ok, fuck it'. Equally try not to get lost in the mindset of having a pill to fix it with. If that was possible Alzheimers, Parkinsons, etc would be cured.