I think one kind of Alzheimer's is found in families, but other kinds have not been found to be familial. No easy way to know who will get it.
September 3
My father’s mother and most of his siblings had Alzheimer’s and now I have it.
September 3
Yes, Alzheimer's can run in families, but it depends on the type. There is a rare form called Familial Alzheimer's Disease (FAD) that is directly passed down through generations. It accounts for less than 1% of all Alzheimer's cases.
With FAD, if one parent carries the gene mutation, each child has a 50% chance of Show Full Answer
Yes, Alzheimer's can run in families, but it depends on the type. There is a rare form called Familial Alzheimer's Disease (FAD) that is directly passed down through generations. It accounts for less than 1% of all Alzheimer's cases.
With FAD, if one parent carries the gene mutation, each child has a 50% chance of inheriting it. Symptoms often appear earlier in life, sometimes as young as the 30s or 40s. Three specific genes are linked to FAD:
- APP – Can lead to a buildup of a sticky protein (beta-amyloid) in the brain
- PSEN1 – The most common FAD gene; carriers almost always develop the disease
- PSEN2 – Less common but still strongly linked to FAD
For the more common late-onset Alzheimer's (after age 65), genetics can influence risk but don't fully determine who will develop it. Lifestyle and environmental factors also play a role. If there is a family history of Alzheimer's, speaking with a doctor about genetic counseling is a good step. A genetic counselor can help weigh the options and understand what testing might mean for future planning.
September 3
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