Stuff that they just don't tell you at school.
OK, there was a lot of shit at school, but very little on "life" and what happens in life and getting old.
I have diabetes, and I knew about that solely because my mum had it, and so was ready for it.
Blood pressure issues is a new one - I was always scared of this. Largely because you get asked "are you on blood pressure medication" when buying Sudafed.
But actually it is one of those odd conditions. For many, high blood pressure has no symptoms apart from high risk of suddenly being dead.
For me it has some symptoms. One I notice is that with high blood pressure, excessive alcohol consumption causes really very bad headaches and unwell feelings. Not like any normal hangover. Seriously this is not at all nice.
But also, and what I had not noticed, is a general "not that well" feeling - tired early in the day. Not doing that well mentally. I did not notice any of this until taking meds for blood pressure made it all go away. I feel way better now.
The meds have side effects - one was a nasty rash! The one I have now is a cough. But the meds do work.
So, seriously, check it out. High blood pressure may be a "symptomless" issue (apart from suddenly being dead) but it may be making your life shit without your realising it - get checked out and medicated!