The stats about Alzheimers....
19% is quite meaningless. It's the absolute figures that count.
They give this figure...
Researchers described this as being equivalent to, respectively, five and seven extra cases per 10,000 woman years.
10,000 woman years, means the risk for 1 woman living till she is 10,000 years old (!) or 10,000 women in one year.
So the risk is approx (taking the mean) 6 extra cases per 10,000 women (IF it exists at all as the next line says the research was observational, not a random controlled, double blind study.)
That equates to a risk of 0.006%. It's so tiny, if it exists at all.
But, as we keep saying here, make your own judgements and do whatever suits you.