While you brought the subject up, just imagine all those people on bug pills cut off from their supply. That'll make life unpredictable.
As for hypertension, prolly worse - though some folks might see their blood pressures drop because they're hunkered down and relieved of the responsibilities/aggravations that jacked their blood pressures up.
But in most cases, worse. Just imagine being cut off from the world. I can see a lot of younger people's BPs going sky-high as a result. Worry and stewing in one's own juice would jack up others'.
you've inspired me to at some point write my own prepping philosophy into a post.
Good! Go for it.