Hi Carole and welcome to our community!
I'll let the member mathematicians jump in on your first question when they have a moment. But as you await your test results, I would like to point out as we say frequently here, "genes are NOT destiny". I hope you'll keep that in mind - as hard as it may be right now!
As for your second question:
Also, is anyone bothered by the studies showing significant differences in cognitive tests and imaging results between carriers and non-carriers?
Not knowing which studies you've read and may be referring to, it's a bit tough for me to respond here. Please feel free to link any that you've found concerning/relevant for members to take a look at.
Carole, it makes total sense that anyone who is concerned they may be at higher risk of being an ApoE4 carrier would be on pins and needles waiting for those results to come in! I'm sure there are many members here who've felt exactly what you're feeling now. While you wait, you may find browsing our site Primer
helpful. It was written by a member doctor, Stavia, and has a great deal of information about the E4 allele along with lifestyle strategies that we believe can significantly modify it's potential impact. The big plus here is that much of it can be applied to improve overall health regardless of your ApoE status. Our Wiki
has in-depth discussions you may find of interest, and the Wiki How-To-Guide
may help you navigate our site a bit more easily.
Carole, please feel free to update us on your results and ask questions of the group at any time. If at some point you'd like to share a bit more about yourself, the Our Stories
forum is a great place to do it. While I am hoping along with you that you do not find a "4" in your test results, please, please know that there are so many members here with one and two E4 alleles aging quite well and living life to it's fullest.
sending hugs your way...Lucy