We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What Causes Fluctuating Blood Pressure?

By Helena Reimer
Updated Feb 25, 2024
Our promise to you
WiseGeek is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At WiseGeek, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject-matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

Normal fluctuations in blood pressure take place throughout the day. For example, exercise causes a healthy increase in blood pressure, whereas relaxing will cause it to fall. In addition, diet and other environmental factors such as temperature can cause fluctuations in blood pressure. These mild fluctuations do not present any concern. If blood pressure remains abnormally high or low for long periods of time however, then underlying causes and possible treatment must be pursued.

A normal blood pressure level is somewhere between 90 over 60 millimeters of mercury (mmHg) to 119 over 79 mmHg. Some people tend to have a lower blood pressure in the morning, which peaks in the afternoon. Others are the opposite and will have a higher blood pressure in the morning, which is known as morning hypertension and can fluctuate throughout the day.

Chronic high blood pressure, also known as hypertension, is believed to be caused by a combination of hereditary and environmental factors. Those with family members who suffer from the condition may be at greater risk. Factors such as smoking, drinking, high salt consumption, being overweight, stress and sedentary lifestyle may trigger and exacerbate the condition. Hypertension can in turn increase the risk of other cardiovascular and cerebrovascular diseases.

Understanding the causes of fluctuating and abnormal blood pressure levels can be difficult as it can be impacted by various interacting systems of the body. The following examples can however help to explain some of the possible causes and interactions. Consuming a high sodium diet for example, can lead to prolonged high blood pressure because sodium requires extra fluids. The extra fluids increase the volume of blood, resulting in higher blood pressure.

Underlying health conditions may also cause abnormal blood pressure. Individuals who experience problems with their kidneys will most likely experience blood pressure fluctuations. If the kidneys function less than optimum for example, the increase in fluid volume will cause increase in blood pressure. Other medical conditions that result in excess bleeding, heart disease and infection can also result in fluctuating blood pressure levels. Endocrine disorders that disrupt hormone levels can yet be another cause.

Fluctuating blood pressure symptoms should not be ignored because an unstable blood pressure can cause serious damage to the body and mind. Symptoms of high blood pressure include headaches, confusion, and vision problems. Symptoms of low blood pressure are weakness, dizziness, and feeling faint. Blood pressure levels can be monitored at the doctor's office, at most pharmacies, as well as at home. Due to the fluctuating blood pressure levels throughout the day, the tests should be performed at the same time each day to get the best results.

WiseGeek is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Discussion Comments
By Heavanet — On Jan 30, 2014

Blood pressure fluctuates in everyone throughout the day, depending on activity and health conditions. Though there are specific guidelines as to what is too high, the ideal blood pressure varies from person to person. Monitor your blood pressure for a while to get an average reading, and check with your doctor to see what is the best blood pressure reading for you.

WiseGeek, in your inbox

Our latest articles, guides, and more, delivered daily.

WiseGeek, in your inbox

Our latest articles, guides, and more, delivered daily.