Abstract
Alzheimer’s disease (AD) is a neurodegenerative disease that progresses in older people. People who have AD diagnosis will suffer impaired cognitive function, memory, language, independence, and a decrease in life quality. There are risk factors, which can trigger AD. There are several factors collected from existing resources such as sleep disorders, diet, viral infection, pesticides, depression. These factors are worth noting because many research papers admit the association between AD and these factors. By analyzing experiments in rats, and fruit flies and investigations in human patients, it is likely to understand the mechanism of how these factors induce AD. Evidence provided in the paper may help institutions and hospitals research and develop targeted drugs and environmental therapy to cure AD in the near future. However, this paper may provide new ideas for researchers to complete details of these risk factors. Further research is required to obtain more data and evidence to solidify the correlation between AD and factors.