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The BP of 153/100 is high especially the diastolic or the lower BP of 100 is a part to worry.If you do not treat it ;it may continue for long time also but without your knowledge the high BP
will start damaging your internal organs.BP should be treated as early as possible and nobody should be careless towards it.The high BP can affect:
-Head -where there are chances of haemorrhage resulting in paralysis
so it is serious.
-Eyes-High BP can cause hypertensive retinopathy
and can result in loss of vision
-Heart-it can cause congestive cardiac failure and enlargement of heart.
Kidneys -here high BP can cause nephropathy causing failure of kidney function.
Not to scare you but for your knowledge I have listed the few organs and the damage that long standing and untreated BP can cause you.See it and please start caring about your health as with just one medicine a day you can stay happily so why not take the medicine regularly and your BP will remain normal and you will remain healthy.