Degeneration

From the article "The Impact of Exercise on the Brain" from ACE:
"While the scientific literature continues to evolve, there are a multitude of challenges in attempting to relate specific exercise types and interventions to specific functional and structural adaptations in regions of the brain. However, there is sufficient evidence to suggest that exercise and physical-activity interventions positively affect the function and structure of various brain regions affected by the aging process, as well as regions affected by neurodegeneration. Given that multiple modalities of exercise affect the brain, a multi-modal exercise program consisting of aerobic, resistance and neuromotor exercises combined with a variety of cognitively demanding and environmentally enriching physical activities is likely to have positive effects on both the mind and body—across the lifespan and regardless of one’s risk of cognitive decline. This evidence also reinforces the importance of individualizing exercise programs to address the goals and concerns of each client, including for those who are interested in slowing cognitive decline and preventing neurodegenerative diseases.".
https://www.acefitness.org/education-and-resources/professional/certified/july-2021/7892/the-impact-of-exercise-on-the-brain/

I found this article interesting because it talks about slowing down degenerative diseases and of the brain. I'm going to get old one day and I want to prevent degenerating more quickly. This information can help my family too. Seeing as I already have a TBI, my memory already sucks and I do worry about my brain degenerating. It's going to go quicker so I want to do anything I can to slow it down.

From the study, "Understanding neurodegeneration after traumatic brain injury: from mechanisms to clinical trials in dementia" it states: "Around 5% of all dementia cases may be attributable to TBI, assuming a conservative 1.5 times increase in relative risk for dementia postinjury".
https://jnnp.bmj.com/content/90/11/1221#article-bottom

It's not very conclusive that I would be 1.5 times more likely but I already feel the onset symptoms associated from dementia. It makes me want to scream.