What factors contribute to Alzheimer’s disease?

All answers are correct. Answer A: Aging is a major risk factor for Alzheimer’s disease. Explanation: While aging itself does not cause Alzheimer’s, it is the most important known risk factor. The number of people with Alzheimer’s doubles about every 5 years beyond age 65. However, many people live into their 90s without developing dementia. Answer B: Genetics play a role in Alzheimer’s risk. Explanation: Having a family history of Alzheimer’s does not guarantee that you’ll develop it, but it increases the likelihood. Genetic risk factors influence susceptibility. For example, the APOE-e4 gene variant is associated with higher risk. Answer C: Environmental and lifestyle factors contribute. Explanation: Factors such as cardiovascular health, diet, exercise, and stress management may influence Alzheimer’s risk. Reducing cardiovascular disease risk can help prevent Alzheimer’s. Answer D: Head trauma is a potential risk factor. Explanation: Traumatic head injuries, especially repeated concussions, may increase the risk of developing Alzheimer’s. Protecting the brain from injury is essential.