"So there have been studies that showed that a single week of exercise can actually stop dementia," he says. "And we know that exercise also increases the risk of long-term cognitive decline." One potential treatment for dementia is exercise. Dementia is a chronic nervous system condition in which the brain's neurons are starved of oxygen. In other words, the cerebrospinal fluid changes as the body fights. To cure the condition, doctors have to replace damaged parts of the brain with new ones. Dementia is also diagnosed by taking medications that keep your brain working. For example, caffeine and vitamin D can keep your muscles and bones healthy but not as engaged in heavy exercise. And vitamin B12 may stimulate your brain to process information that might cause Alzheimer's. It's all linked to brain health. Diet and Exercise Dementia symptoms typically appear in early childhood and can be quite frequent. Most symptoms are mild or no signs at all. The symptoms can last 2 to 4 weeks, depending on your age. Some people will appear well on their medication when not in therapy. In my own research, dementia was more common among women in middle age than among men. But don't sleep too much, or you might get mood problems or both. A study in the Journal of Neuroimaging and Cognitive Neuroscience found that people with dementia had trouble managing their sleep. The findings of these studies are important to note because they directly address the association between health care costs, such as hospitalization for long-term care disorders including high-deductible primary care visits and acute head injury. Although the majority of people with dementia experience short-term physical activity decline throughout their lives, these results show that prolonged physical activity is a risk factor for dementia. Indeed, the longer the activity, the greater the "increased risk of dementia and delayed dementia." Even less physical activity is associated with delayed and total dementia; "only 10 percent and 26 percent of dementia deaths, respectively, are associated.