DH's blood pressure is normal as long as he takes his meds. He has regular appointments with the Hypertensive Nurse and followed her advice to keep his weight down and cut out salt.
OTOH I have LOW blood pressure, which is not really a problem except that I have a tendency to fainting. However when I mentioned to my GP, during a routine appointment, that I had been experiencing more dizziness and faintness than usual, expecting her to say 'it is your age' - she, instead rechecked my blood pressure, declared it very low and knowing about my DH's HIGH BP asked if I was following my DH's diet. Which, of course, I was! No salt in cooking, no salt on the table, no crisps, tinned soup, ready made sauces or stock cubes. So I have been prescribed the odd pack of sea salt crisps, a little sprinkle on potatoes, salads, soup, etc.
As an aside, although back on topic, I/we have a really good family GP. She is my DD1 and DGC1 and DGC3's doctor too and sometimes sees DH. She does listen very carefully to MY opinions about MY health then explains her suggestions in detail. If people do not trust their GPs then I suggest that they need to find a better one. OK to see any Doctor in the practice in a sudden emergency but best to wait for an appointment with your own GP for on-going long term problems.