This is an informative and insightful piece, Dr. Hunter, but yet, it is incomplete. You state: "Today we explore a study suggesting that as blood pressure rises above 90 mm, we risk damaging our heart’s blood vessels (coronary arteries). Let’s get a bit more granular: When systolic blood pressure rose above 90 mm, the risk of coronary artery damage rose with it".

While several parts of the body are impacted by blood pressure including the eyes, three major organs are particularly pivotal. The heart which this study addresses, the kidneys and the brain.

Although, the systolic and diastolic readings are very important, the critical reading with respect to healthy brain function at any age and particularly in the elderly and those with high blood pressure is CEREBRAL PERFUSSION PRESSURE, (CPP).

I encourage your readers to read up on CPP at credible medical websites or discuss it with their doctors.

Especially for the elderly and those who have had high blood pressure for a long time, it would not be wise to keep their systolic pressure around 90mm, and furthermore, we don't even know what the diastole is.

Each one of us must always keep in mind "the well-being" of our brain when we are talking about blood pressure and interpreting research papers on the topic.