Low Blood Pressure ? Why is Your Blood Pressure Low?


Why is your blood pressure low?

As a doctor with an interest in the subject, I'm often asked if a low blood pressure is normal or if such a reading indicates some abnormal process in the body? In fact ? it can be difficult to precisely define what we mean by low blood pressure. It all really depends on what's normal for you as an individual.

If 1000 people had their blood pressure measured then we might expect to find a spread of readings. These might range from as high as 200 / 120 down to 80 / 50 with most people clustering around a level of around 130 / 85. Most of these people would have no symptoms of any kind ? no matter what their blood pressure reading actually was. Even those with obviously low blood pressure would be free of any symptoms in most cases.

The answer to whether it is normal or abnormal to have a low blood pressure depends on what your own typical or average blood pressure reading is.

Here's an example of when it's normal to have low blood pressure.

If, for the whole of your life, you've always had blood pressure readings of around 90 / 50 - then without doubt you have "low blood pressure" but there is truly nothing wrong with you or with your blood pressure reading. You should be pleased that your risk of stroke or heart attack will be much less than many others. You're not likely to experience any symptoms from your "low blood pressure." Putting it simply - your blood pressure is normal for you and needs no investigation or treatment. This kind of "normal low blood pressure" will not cause you any symptoms and will need no treatment. It's just part of you and how your system works.

So, when might low blood pressure be an abnormal finding?

If your blood pressure is usually around 130 / 80 and suddenly or gradually drops to a level around 90 / 50 then it's very likely that you'll become aware of symptoms related to this change. As in the above example you have "low blood pressure" but in this instance it is not normal for you to have readings this low. You may need to see your doctor for tests because it's quite likely that some other disease or perhaps a medication has caused your blood pressure to drop. Someone who develops low blood pressure like this will often experience symptoms such as those listed below.

The symptoms of an abnormally low blood pressure can include:

Feeling light headed, feeling dizzy, being tired or feeling fatigue on exertion, fainting, transient blurring of vision, or transient confusion. All of these low blood pressure symptoms will resolve if the blood pressure returns to normal.

The following are among the many possible causes of low blood pressure when it is abnormally low:

Medications for anxiety, medications for blood pressure, heart medications, diuretics or "water tablets" and some anti-depressant medications. Other medication related causes are painkillers and alcohol ? particularly if these two are mixed together!

Non medication causes of include dehydration, heart disease and heart valve disease, recent heart attack, changes in heart rhythm, bacterial infection in the system, kidney diseases, diabetes mellitus and haemorrhage or bleeding.

As you can see, the above list of the causes of low blood pressure is extensive and you should consult with your doctor if you are concerned in any way. Above all ? don't try to diagnose your own condition ? seek help if you are worried. Low blood pressure is not likely to do you any serious harm but it can leave you feeling pretty miserable.

Gordon Cameron MD is based in Edinburgh, Scotland. He has a special interest in blood pressure problems in general and in low blood pressure in particular.

Follow these links to his website for more information about low blood pressure or about high blood pressure treatment.







Related News



Pediatricians and the Promotion and Support of Breastfeeding - Archives of Pediatrics

Pediatricians and the Promotion and Support of Breastfeeding
Archives of Pediatrics -9 hours ago
Author Affiliations: Division of Adolescent Medicine, Department of Pediatrics, Cooper University Hospital, University of Medicine and Dentistry of New ...
Adult medicine enters the medical homeAAP News (subscription)
all 2 news articles

Media Bombardment Is Linked To Ill Effects During Childhood - Washington Post

3 News NZ

Media Bombardment Is Linked To Ill Effects During Childhood
Washington Post, United States -2 hours ago
"Our kids are sponges, and we really need to remember they learn from their environment," said coauthor Cary P. Gross, professor at Yale School of Medicine. ...
Screen addiction 'bad for kids' health'Melbourne Herald Sun
all 14 news articles

New Marketing Coaching and Consulting Firm for Physicians ... - MarketWatch

New Marketing Coaching and Consulting Firm for Physicians ...
MarketWatch -15 hours ago
"There are a growing number of physicians making the switch to concierge medicine, but they either don't know how to effectively convert their existing ...

Organogenesis Receives Two Prestigious Awards for Economic Impact ... - MarketWatch

Organogenesis Receives Two Prestigious Awards for Economic Impact ...
MarketWatch -13 hours ago
Organogenesis was the first company to successfully mass produce living regenerative medicine products -- reaching hundreds of thousands of patients in the ...

Strong medicine - Financial Times

Telegraph.co.uk

Strong medicine
Financial Times, UK -4 hours ago
The European Commission is right to criticise drugmakers' practice of extending their monopolies on high cost medicines by keeping out low-cost generic ...
Drug firms 'block' cheap medicineBBC News
EU report: Drug makers block market entry of competing medicinesXinhua
EU says drug industry delay tactics cost us €3bnTimes Online
United Press International - euronews
all 337 news articles

Three FAAPs elected to Institute of Medicine - AAP News (subscription)

Three FAAPs elected to Institute of Medicine
AAP News (subscription) -12 hours ago
Three AAP Fellows were among 65 new members elected to the Institute of Medicine, one of the highest honors in the fields of health and medicine that ...
FELLOWS IN THE NEWSAAP News (subscription)
Lake Tahoe hosts Practical Pediatrics, offers range of seminarsAAP News (subscription)
all 3 news articles

China Medicine Corporation Awarded GSP Certification - MarketWatch

China Medicine Corporation Awarded GSP Certification
MarketWatch -15 hours ago
("China Medicine" or "the Company"), a leading developer and distributor of prescription and over the counter pharmaceuticals, traditional Chinese medicines...

Cardiologists Debate Expensive Heart Scans - New York Times

Cardiologists Debate Expensive Heart Scans
New York Times, United States -4 hours ago
In the latest study, published last week in The New England Journal of Medicine, researchers assessed the accuracy of CT angiography in identifying ...
Heading off heart attacks in womenChicago Daily Herald
all 4 news articles


Obama to broaden role of genetics in medical care - Atlanta Journal Constitution

Obama to broaden role of genetics in medical care
Atlanta Journal Constitution,  USA -9 hours ago
Now the pursuit of “personalized medicine” is expected to get a major push from the incoming administration of President-elect Barack Obama. ...

Effort in Senegal to Join Traditional & Conventional Medicine - Voice of America

Voice of America

Effort in Senegal to Join Traditional & Conventional Medicine
Voice of America -14 hours ago
By Scott Bobb Traditional medicine was once thought of as sorcery or quackery. But the craft is slowly gaining the respect of conventional medical ...
Modern West African Market Offers Traditional Remedies for IllnessVoice of America
all 2 news articles