Other conditions, including dehydration, blood loss, severe infection and a severe allergic reaction, can lead to low blood pressure. But, these disorders usually cause a sudden, dramatic drop in pressure, rather than a sustained low blood pressure reading over time. Another possible cause for low diastolic blood pressure is extremely stiff , Living with presión arterial baja (hipotensión)? Connect with others like you for support and answers to your questions in the Heart & Blood Health support group on Mayo Clinic Connect, a patient community., Low blood pressure Posted by nyj @nyj, Jan 28 9:53am I'm on blood pressure meds for the last 15 years I'm 70 year male the last 6 months my pressure is 130 / 57. I exercise 45 min a day use no salt don't drink. I'm worried that my bottom number is so low what can I do to increase it? Interested in more discussions like this?, Low blood pressure symptoms can include dizzy or lightheadedness, definitely worth a call to your doctor for recommendations. You mention having a pretty new pacemaker., 10 ways to control high blood pressure without medication By making these 10 lifestyle changes, you can lower your blood pressure and reduce your risk of heart disease., Low blood pressure and postural hypotension like your describing can be a sign of Addison’s disease, adrenal insufficiency. This can be checked with a blood test for serum cortisol at 8 AM..