Is pre diabetes always caused by lifestyle?

[Notnowbarnaby]

I’m slightly baffled. I’m just 40, my lifestyle is quite healthy, I exercise three times a week and walk a lot.
my diet is quite carb heavy but I don’t drink a lot of alcohol and don’t eat sweets.
Ive just been diagnosed as prediabetic with a reading of 43.5.
I’m a bit concerned that it’s cropped up as a symptom of something else, ie issue with pancreas or thyroid, but I do have health anxiety and maybe I’m just being very naive about my diet?

is 40 young to find yourself in this position? I’ve also never smoked and my main vice is coffee!

DH had high cholesterol and was edging towards pre diabetes , until I decided my own diet was crap and changed mine - so therefore his and elderly mothers

We still eat carbs, just wholemeal ones when it comes to pasta and bread, most of our carbs are vegetable

Everybody's bodies word differently Me and he eat the exact same, only he has crisps, chocolate and cake when he feels like it, where as I only need to sniff a calorie or a bit of fat/sugar and Im struggling . My cholesterol is still at the point where the GP is keeping an eye

Are your blood tests recent?

Mine are every 3 months but used to be every 6 weeks for the first year.

If I ate 'good' carbs my blood glucose would be sky high. Like many many diabetics, my experience is that there is no such thing as a good carb for diabetes. I eat to my meter and use a Freestyle Libre a couple of times a year to monitor spikes.

I get blood tests once a year for thyroid levels. They don’t bother to monitor me at all for blood sugar unless I push for it.