Hi, Dude3777, and welcome!
Looks as if this study showed that someone with peripheral neuropathy would have a life expectancy of about 4 years less than someone without PN.
Peripheral Neuropathy in Older People Is Associated with Reduced Life Expectancy - PubMed
It is possible to dwell on grimmer statistics unnecessarily though. Statistics don't tell the whole story.
If you've been living sensibly, and it sounds as if you have been, you can beat the odds.