Probably older age.  It hits many people.  I remember when I was told of high blood pressure,  and diabetes.  It's a shock to the system.  Both parent's had high blood pressure,  Mom was diabetic.  It's the genes you get.  I've never been a big meat eater,  and I have high cholesterol.  Dad died from heart disease ,  he had low cholesterol.   Doctor say's it's the gene's that get us.  I believe that.  I've altered my diet,  low sugar,  no dairy,  little meat.  My number's keep going up and up.  Except for not eating,  I don't have any other idea's.