True or False: The most significant risk factor for Alzheimer's disease is genetics.

True or False: The most significant risk factor for Alzheimer's disease is genetics.

• A. True
• B. Age
• C. Diet
• D. False

Answer: (D)

The main idea here is understanding which factor most strongly influences Alzheimer’s risk. Age is the strongest risk factor. The chance of developing Alzheimer’s increases dramatically as people get older, especially after age 65, and the prevalence climbs with each advancing decade. Genetics does play a role—rare, early-onset forms are caused by mutations in APP, PSEN1, or PSEN2, and the APOE ε4 allele can increase risk for late-onset disease—but these genetic factors do not account for the majority of cases. Most cases are sporadic and linked to aging and other non-genetic factors, with genetics modulating risk rather than determining it. So the statement is false.

The main idea here is understanding which factor most strongly influences Alzheimer’s risk. Age is the strongest risk factor. The chance of developing Alzheimer’s increases dramatically as people get older, especially after age 65, and the prevalence climbs with each advancing decade. Genetics does play a role—rare, early-onset forms are caused by mutations in APP, PSEN1, or PSEN2, and the APOE ε4 allele can increase risk for late-onset disease—but these genetic factors do not account for the majority of cases. Most cases are sporadic and linked to aging and other non-genetic factors, with genetics modulating risk rather than determining it. So the statement is false.