diastolic pressure

my blood pressure is usually 140/68 .  Is there a healthy relationship between the systolic and diastolic pressure . Does it matter if the diastolic is half the systolic pressure

[ed34]

Diastolic pressure is the pressure of the blood in your arteries when they are relaxed (when the heart is between pumps). This pressure is requried to push blood to all your
body cells, feeding them with life giving Oxygen/nutrients and removing waste products.
If diastolic pressure gets too low, this ability is lessened and tissue can become damaged. If diastolic pressure is below 60 is it classed as low blood pressure (hypotension). Headaches and other symptoms can come into play due to the pressure being too low. Anything above 90 is classed as hypertension (high blood pressure).
In severe cases the difference between the systolic and diastolic can be monitored but
this is difficult. Even changing your posture can alter the diastolic pressure, as can
coughing. So, our pressures are constantly changing. The normal range for diastolic pressure is 60-90.

[katkuj]

what if your blood pressure is 135/54? when the diastolic pressure gets that low is that bad? when there is such a space between the two does that mean anything?