Understanding Blood Pressure: The 'Silent Killer'

High blood pressure is frequently called the “silent killer” because many individuals don’t experience symptoms until the condition is advanced and has led to other health problems. According to the Centers for Disease Control and Prevention, approximately 120 million Americans – 48 percent of the population – have high blood pressure.

How Blood Pressure is Measured

A healthy blood pressure reading is typically defined as 120 over 80. Dr. Michael Woodruff, medical director for Regence BlueCross BlueShield of Utah, explains that blood pressure is measured with two numbers, expressed in millimeters of mercury. The top number represents systolic pressure – the pressure in blood vessels when the heart beats. The bottom number is diastolic pressure – the pressure when the heart rests between beats.

The Balance of Pressure and Resistance

“This number represents the balance between how much blood and how hard it’s being squeezed and how much resistance there is in your blood vessel system,” Woodruff said.

The Dangers of Uncontrolled High Blood Pressure

High blood pressure damages artery walls, causing microscopic inflammation. This can lead to atherosclerosis, a process where blood vessels narrow and harden.

Impact on Vital Organs

“This is where your blood vessels become narrowed, stiffened and thickened, and that limits the flow of blood to your vital organs,” Woodruff explained. “Understanding that process really explains why having uncontrolled high blood pressure can cause all kinds of damage to your heart, your brain, your liver, your kidney, all your organs, and can cause things like heart attack, stroke and kidney damage.”

Low Blood Pressure: Symptoms and Causes

Low blood pressure can also be problematic, causing symptoms like weakness, confusion, dizziness, nausea, fainting, and blurred vision. Dr. Woodruff noted that dehydration is a common cause, but prolonged standing or nutritional deficiencies can also contribute.

Lifestyle Changes for Healthy Blood Pressure

To improve health and avoid complications, Woodruff recommends prioritizing diet and exercise. He advocates for a nutritionally balanced diet rich in nutrient-dense foods – fruits, vegetables, whole grains, and healthy nuts and seeds – while limiting processed foods.

Dietary Recommendations

He suggests considering the Mediterranean or DASH diets, which emphasize whole, unprocessed foods, low saturated fat, and low sugar. Reducing sodium intake and increasing potassium consumption can also help regulate blood pressure.

Exercise Guidelines

For exercise, Woodruff recommends at least 150 minutes of aerobic activity per week, combined with two or more strength training sessions.

Monitoring and Medical Intervention

Individuals at risk of high blood pressure may benefit from using a home blood pressure monitor, but should consult their doctor to choose an appropriate model. If blood pressure remains consistently elevated, discussing medication and lifestyle changes with a healthcare provider is crucial for early detection and management, potentially leading to a longer, healthier life.

This story was originally reported on-air and adapted for this platform with AI assistance. Our editorial team ensures fairness and accuracy across all platforms.