What is low blood pressure?

Low blood pressure, also called hypotension, is defined as any level of blood pressure that falls below normal levels.
Blood pressure is the pressure of your blood as it flows through your arteries. It is measured in millimeters of mercury (mm Hg).
The lowest blood pressure considered normal is 90/60 mm Hg. The top number is called systolic pressure, which is measured when your heart beats. The second number is called diastolic pressure and is your blood pressure between heartbeats.
Many older adults live with some amount of hypotension without knowing it.
Main causes
A number of things can cause low blood pressure. Some people with high blood pressure, or hypertension, can accidentally create low blood pressure while treating their condition.
Medications and diets intended to treat high blood pressure can sometimes cause low blood pressure as a side effect.
Low blood pressure can also be caused by:
- Standing for long periods
- Dehydration
- Thyroid disease
- Internal bleeding
Hypotension is often treated through changes to your diet. These will usually try to elevate your salt levels and increase your blood flow.
Who is at risk for low blood pressure?
Low blood pressure can happen to anyone at any age. There are several factors that can predispose some people to it more than others, including:
- Common medications for conditions like diabetes and Parkinson’s disease can cause low blood pressure as a side effect.
- Diuretics that reduce the body’s salt levels can cause low blood pressure as a side effect.
- Some older adults develop postprandial hypotension, a condition in which blood pressure suddenly drops about one or two hours after eating.
SLIDESHOW
Low Blood Pressure (Hypotension): Symptoms, Signs, Causes See SlideshowHow is low blood pressure diagnosed and treated?
People quite often don’t know they have low blood pressure until their doctor tells them during a routine checkup. Your doctor may advise you at that time to add more salt to your diet.
If more direct intervention is needed, you could be prescribed medication or even given an intravenous (IV) line to relieve dehydration.
Foods as a treatment for low blood pressure
Lack of nutrition plays a large role in cases of low blood pressure.
Not getting enough iron, folic acid, and vitamin B12 can prevent your body from making the right amount of blood cells. This can cause anemia and low blood pressure.
Water
Dehydration is one of the main causes of low blood pressure. Insufficient water levels actually reduce your blood volume. This reduction then lowers your blood pressure levels.
Doctors recommend people with low blood pressure should drink around 8 cups, about a half-gallon, of water per day. They should also limit their consumption of alcohol.
Coffee
The caffeine in coffee is a stimulant. This means that it can raise your heart rate and blood pressure levels. Drinking coffee can be helpful in the short-term fix, but it isn’t a permanent solution. Most people develop a tolerance to caffeine over time.
Beef liver
Beef liver is one of the best sources of vitamin B12. A 100 gram serving of liver contains an incredibly high amount of B12.
Low levels of vitamin B12 can cause anemia and low blood pressure.
Eggs
A single egg contains high amounts of folic acid and B12.
Like vitamin B12, folic acid is an important aid for raising low blood pressure levels.
Red meat
Red meat is one of the most widely available sources of iron, which is needed for raising blood pressure levels.
Beef has one of the highest iron contents that you will find in food.
Although some doctors recommend avoiding red meat, someone with low blood pressure may actually benefit from adding more of it to their diet.
There are many other foods that will help increase your salt, vitamin B12, folic acid, and iron levels. These include:
- Beef
- Olives
- Cottage cheese
- Broccoli
- Asparagus
- Lentils
- Chickpeas
- Chicken
- Fish
Health News
- 5,000+ Measles Cases Threaten Canada’s Elimination Status
- Home Exercises Ease Knee Arthritis Pain
- Puberty: The Signs, Stages & When to See a Doctor
- Medical Debt May Soon Return to Credit Reports
- Sitting For Long Periods? Sip Cocoa Or Munch Berries To Protect Heart Health, Experts Say
More Health News »
What are the risks of low blood pressure?
While many don’t notice low blood pressure, it can cause some potentially serious problems if left untreated. Blood pressure that drops too low can cause:
- Blurry vision
- Headaches
- Heart palpitations
- Nausea
Blood pressure that continues to drop is a medical emergency. Very low blood pressure keeps your vital organs from receiving oxygen and may lead to shock.
Signs to watch out for are rapid breathing, blue skin tone, and a rapid pulse. Call 911 if you notice any of these.
Manhattan Cardiology: “What to Eat to Help Raise Low Blood Pressure.”
Mayo Clinic: “Low blood pressure (hypotension).”
National Heart, Lung, and Blood Institute: “Low Blood Pressure.”
St. Clair Hospital: “Low Blood Pressure (Hypotension).”
USDA: “Beef, Ground, 85% Lean Meat / 15% Fat, Loaf, Cooked, Baked.”
USDA: “Beef, Variety Meats and By-products, Liver, Cooked, Braised.”
USDA: “Egg, Whole, Cooked, Hard-boiled.”
Top What Foods Are Good If You Have Low BP Related Articles
dopamineDopamine is a medication administered intravenously to correct imbalances in the blood circulation dynamics (hemodynamics) caused by heart attack (myocardial infarction), cardiac arrest, open-heart...
hawthornHawthorn is used in traditional medicine to treat congestive heart failure, irregular heart rhythms, circulatory disorders, high cholesterol, anxiety, and indigestion. Common side effects of hawthorn...
Is A Manual Blood Pressure More Accurate?Manual blood pressure gives accurate results when used correctly by a trained person. However, manual blood pressure measurement is not the recommended type of blood pressure monitoring for home use...
losartan and hydrochlorothiazide (Hyzaar)Losartan and hydrochlorothiazide is a combination drug of losartan and hydrochlorothiazide prescribed for the treatment of high blood pressure. Common side effects of losartan/hydrochlorothiazide are...
Low Blood Pressure (Hypotension)Low blood pressure (hypotension) is blood pressure that is so low that it causes low flow of blood through the arteries and veins. Some of the symptoms of low blood pressure include light-headedness,...
Low Blood Pressure (Hypotension) CausesLow blood pressure (hypotension) occurs when blood pressure drops below the normal range. Low blood pressure can be temporary, or it can be a chronic (long-lasting) condition.
Low Blood Pressure PictureLow blood pressure (hypotension) is pressure so low it causes symptoms or signs due to the low flow of blood through the arteries and veins. When the flow of blood is too low to deliver enough oxygen...
Low Blood PressureWhat is low blood pressure (hypotension)? Explore low blood pressure causes, symptoms, and signs. Discover what is considered low blood pressure.
midodrineMidodrine is a medication used to treat orthostatic hypotension, also known as postural hypotension, a condition that causes a drop in blood pressure when standing up from sitting or lying down....
norepinephrineNorepinephrine is a hormone and a neurotransmitter involved in the body's fight-or-flight response. Norepinephrine used as a medication is used to treat severe low blood pressure (hypotension) caused...
triamterene and hydrochlorothiazideTriamterene and hydrochlorothiazide (HCTZ, Maxzide, Dyazide) is a diuretic medication prescribed for the treatment of high blood pressure and edema. Review side effects, drug interactions, and safety...
vasopressinSynthetically produced vasopressin is used to increase the blood pressure in adults who are in a state of severely low blood pressure (hypotension) from vasodilatory shock. Common side effects of...
What Are Abnormal Blood Pressure Number Ranges?Abnormal blood pressure, especially high blood pressure, is a common issue with no initial symptoms. Learn how to keep your blood pressure in the normal range.
What Causes Low Diastolic Blood Pressure?A diastolic blood pressure (DBP) of somewhere between 60 and 90 mm Hg is good in older people. Causes of low DBP include bed rest, dehydration, loss of water, alcohol use, hormone deficiencies,...
What Is Normal Blood Pressure by Age?What is normal blood pressure? Learn about normal blood pressure by age and the risk factors of hypertension.
Why is My Blood Pressure Suddenly High and Low?Blood pressure can be defined as the force your blood creates when it's flowing through your arteries. Blood pressure may be high or low due to medication side effects, certain medical conditions, or...