Research Question

I would like to do my research paper on what are the early signs of dementia. One question I would ask is "How do doctors make decisions about diagnosing early onset of dementia?" The reason I chose this is because I had two relatives die from complications from having dementia. I watched two relatively healthy people who were living a pretty active life, just slip into this dark place. The second research question is "Why when eating sugary foods after having gastric bypass make you sick?" I had gastric bypass 7 years ago and up to today I still get pretty sick when I eat sweets. It is something I have always wanted to look into and I never have.