Not all dementias can be mitigated, but there are some factors that have been scientifically identified as controllable. This is from an online article sent to doctors:
"These numbers are staggering, according to the authors of a 2020 update of the 2017 Lancet Commission on dementia prevention. (40% of us will develop some dementia.)The good news is that dementia is not necessarily a foregone conclusion as we age. In fact, neurocognitive health is highly dependent on many lifestyle decisions that we can control.
The Lancet study authors point to 12 modifiable risk factors fleshed out by the research—an increase from the nine cited in 2017. Let’s take a closer look.
What can be done?
According to the Commission, the 12 modifiable risk factors account for about 40% of worldwide dementia that can be prevented or delayed.
The authors categorize prevention strategies as: 1) reduced pathological damage (eg, amyloid-/tau-mediated, vascular, or inflammatory mechanisms), and 2) increased/maintained cognitive reserve.
The authors cite the following interventions:
Reduce hypertension (ie, systolic pressure of 130 mm Hg at 40 years or older via antihypertensive medications)
Avoid head injury
Stop (or don’t start) smoking
Decrease exposure to air pollution (including second-hand smoke)
Decrease midlife obesity
Additionally, the authors recommend the following for maintaining/boosting cognitive reserve:
Treatment of hearing impairment (ie, use of hearing aids and avoidance of excessive noise levels)
Develop and maintain social contact
Attain higher levels of education
As for factors that relate to pathological damage and cognitive reserve, the authors recommended the following:
Engage in frequent exercise
Avoid excessive levels of alcohol"
Share this with loved ones who are showing early signs, with family members and caregivers (so they understand the changes that must be made), and with medical personel who do not seem to understand that interventions really can help.