This is after yesterday's article on dementia there were questions. To begin with, there is a set of genetic traits that geneticists use to determine the risk of dementia. The risk may be high, but dementia will still not develop because it is only a risk. That is, there is always a chance to slip through and not get hurt.
If someone has dementia in their family, ask a geneticist first. This is such a popular medical specialty. Mothers with children often visit them.
So a geneticist can say about the risk of dementia that it is high, medium or low.
In Holland there is such a city of Rotterdam. There, in 1990, a scientific study was started, in which several thousand people over the age of 55 participated. The country is not poor, so the study participants were examined far and wide, and then followed for 30 years.
Until now, scientists are recklessly digging through heaps of material from this study. And they find more and more amazing things. We've also learned a lot about dementia. As an illustration, I suggest looking at my scribbles depicting a graph of the incidence of dementia by year, depending on the hereditary predisposition. The high-risk graph is in red. Yellow is for medium risk. Green is low risk.
Well, that is, you can roughly estimate that if we are talking about people over 55 years old with a low or medium risk of hereditary dementia, then in 15 years dementia will be more than one in ten. This roughly matches the numbers from my other article about dementia. It all fits together.
But if the heredity is completely bad, then the risk is already somewhere two times higher. About.
In short, as far as I understand, you need to have a very bad heredity in order to significantly increase your risk of dementia.