More on High Blood Pressure
Since I recently posted on the topic linking high blood pressure to dementia, I came across my doctor's newsletter on Blood Pressure. I reprint it here for those interested.
The leading cause of death and disability in the United States is from cardiovascular diseases, and the most common disease is high blood pressure. High blood pressure, also known as
hypertension, usually does not have any symptoms – hence, the nickname “silent killer.”
Unfortunately, one-third of those who have high blood pressure do not realize it and are not aware of their risk for heart disease. Therefore, many people live years without treatment, possibly damaging their heart, blood vessels, and kidneys.
Lifestyle choices (e.g., weight control, tobacco use, proper nutrition, regular exercise) can help
prevent and/or control high blood pressure. The following are common questions and answers about blood pressure.
What is blood pressure?
It is the force of blood against the walls of arteries. Systolic pressure (the top number) is the force as the heart beats. Diastolic pressure (the bottom number) is the force as the heart relaxes.
A blood pressure reading of 120/80 mmHg is articulated as “120 over 80.”
What is the meaning of the numbers?
A systolic pressure of 120 or less is considered normal. Diastolic pressure of 80 or less is considered normal. Therefore, 120/80 or less is a normal blood pressure. The chart below shows normal blood pressure levels, as well as the levels of high blood pressure.
What are the dangers of high blood pressure?
High blood pressure places an additional strain on the circulatory system (i.e., heart and blood vessels). This strain results in arteries becoming thicker, narrower, and weaker, sometimes causing an obstruction. A completely obstructed artery often leads to heart attacks, strokes, kidney disease, and dementia.
Is low blood pressure a health problem?
The training effect of regular exercise, especially when working out rigorously, is a lower blood pressure. At times, an individual who does not exercise may experience regular low blood pressure. If symptoms do not accompany the low pressure, it usually is not serious. However, if
blood pressure suddenly drops, it may indicate an underlying problem causing inadequate blood flow to the heart, brain, and other vital organs. Symptoms may include dizziness or lightheadedness.
What are some tips to prevent/control high blood pressure?
Healthy living is at the heart of preventing and controlling high blood pressure. Are you:
Maintaining a healthy weight?
Engaging in regular physical activity (fi ve 30-minute sessions of aerobic exercise and two
30-minute strength training sessions per week)?
Eating a low-fat, high-nutrient diet (fruits, vegetables, low-fat dairy foods, low sodium)?
Limiting alcohol consumption?
References:
1. NIH – National Heart, Lung, Blood
Institute, www.nhlbi.nih.gov
2. American Heart Association,
www.heart.org
3. Blood Pressure Association (United
Kingdom), www.bpassoc.org.uk
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LivingWell
The Link Between Heart Health and Blood Pressure
February 2010
