The book Healing is Voltage by Tennant, covers this topic indepth.
If I remember correctly Tennant also shares how the regular numbers that represent the heart's pumping action can be missleading also and that what is of more importance is the expandability, the actual health, of our vascular system.
Low isnt always a superior sign.
Hypothyroidism is often part of the origin of what is contributing to hypertension.
"G's" low nitirc oxide, and mucin's congesting affects and contributions to low thyroid hormone output and insulin resistence may be involved.
H
He covers in more detail also that dental area infections can specifically affect health w the production of different toxins, fungal and chemical, that destroy thyroid health ect.
(pertainant to Phelps additions on the parasite forum)
Cayenne (tincture is best because it needs no digestion thus it wont cause stomach distress but goes right to work) is also easy to add to ones diet and is reported by Dr Schultz to be a superior hypetension reliever.