BIOLOGY IN HUMAN WELFARE
HUMAN HEALTH AND DISEASE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the person’s environment and social interaction
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the person’s genetics and environment
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the person’s gender and age
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the person’s salt intake and stress level
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Detailed explanation-1: -It likely develops from multiple factors, such as genetics, lifestyle and environment. Scientists have identified factors that increase the risk of Alzheimer’s. While some risk factors-age, family history and heredity-can’t be changed, emerging evidence suggests there may be other factors we can influence.
Detailed explanation-2: -Older age does not cause Alzheimer’s, but it is the most important known risk factor for the disease. The number of people with Alzheimer’s disease doubles about every 5 years beyond age 65. About one-third of all people age 85 and older may have Alzheimer’s disease.
Detailed explanation-3: -Because you inherit one APOE gene from your mother and another from your father, you have two copies of the APOE gene. Having at least one APOE e4 gene increases your risk of developing Alzheimer’s disease two-to threefold. If you have two APOE e4 genes, your risk is even higher, approximately eight-to twelvefold.
Detailed explanation-4: -APOE4 is the strongest risk factor gene for Alzheimer’s disease, although inheriting APOE4 does not mean a person will definitely develop the disease. The study suggests that dementia may be caused by lipid imbalances in brain cells.