Below 120/80 has been the standard in the most recent (2017 ish) guidelines from the various cardiology organizations that set them. They're extremely conservative, so the supporting data to make the changes had to be enormous. They're so slow to make changes the new "ideal" of below 120/80 was a decade behind all the research that said that's what it should be, and it'll take primary care doctors another decade to realize the standards changed 8 years ago, lol.
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The most recent update to BP treatment guidelines (relevant to us) is they now advise immediately starting with meds to lower BP once it's over 130/80 (no more waiting for a year of lifestyle changes, since we now know organ damage can occur in that time, kidney, eyes, etc), and starting with *low dose 2 class combination* drugs (lower side effect risk, and works better). The low dose combo treatment approach is something discussed extensively here on Meso over a year ago.
Canada has done a good job of putting together an easy to read guide on the 2025 updates to BP treatment guidelines: