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In 1998, three scientists were awarded the Nobel Prize in Physiology or Medicine for a discovery that changed cardiology forever. They identified a signaling molecule that acts as a natural relaxant for our blood vessels. That molecule is nitric oxide. While it might sound like something from a chemistry lab, nitric oxide is actually one of the most vital molecules your body produces for healthy circulation, blood pressure, and physical stamina. Understanding how it works gives you the power to take better control of your cardiovascular health. The Foundation of Blood Flow To understand nitric oxide, we first need to look at the endothelium, the delicate inner lining of your blood vessels. When your endothelium is healthy, it produces a steady supply of nitric oxide. Think of nitric oxide as a traffic controller for your circulatory system. Its primary job is vasodilation, a process that signals the smooth muscles around your arteries to relax and widen. When arteries are relaxed, blood flows freely and easily, delivering oxygen and nutrients to every organ in your body without your heart having to overwork. However, when nitric oxide levels are low, blood vessels can become stiff or constricted. This forces the heart to pump harder against resistance, which elevates blood pressure and places stress on the cardiovascular system. The Age Factor If your body produces this molecule naturally, why do we need to care about it? The answer lies in how our bodies change over time.  Research shows that our natural capacity to produce nitric oxide declines significantly as we age. By the time we reach our 50s, whole-body nitric oxide production can decline by over 35%. This decline is a major reason why blood pressure tends to creep up and energy levels tend to dip as we get older. Even in healthy adults, measures of endothelial function decrease progressively across adulthood. The good news is that this decline isn’t irreversible. With the right lifestyle changes and nutritional support, you can help your body restore its production of this vital molecule. Benefits Beyond Blood Pressure While blood pressure regulation is the most famous benefit of nitric oxide, its impact extends across your entire body. 1. Enhanced Energy and Stamina Fatigue is often a supply issue. Your muscles and brain need oxygen to function efficiently. By widening blood vessels, nitric oxide ensures that oxygen-rich blood reaches your tissues more effectively.  This is why athletes often focus on nitric oxide for performance, as it helps delay fatigue and improve endurance. For everyday life, this means having the stamina to get through your day without crashing.  2. Cognitive Health Your brain is a metabolically demanding organ that relies on strong blood flow. By supporting healthy circulation, nitric oxide helps ensure the brain receives the fuel it needs to maintain focus and clarity.  3. Sexual Health  Healthy blood flow is essential for sexual function in both men and women. Because nitric oxide is the primary mediator of blood flow to sexual organs, maintaining optimal levels supports sexual health and responsiveness. How to Boost Your Levels Naturally You can support your endothelium and boost nitric oxide production through simple, science-backed habits. 1. Eat Nitrate-Rich Foods Nature provides a potent source of nitric oxide precursors called nitrates. When you consume these, your body converts them into nitric oxide. The best sources are leafy greens and root vegetables. Expert Tip: While beets usually get the spotlight, Arugula (Rocket) is the superior source when comparing whole foods by weight. Arugula contains approximately 480 mg of nitrates per 100 grams, or nearly twice the concentration found in beetroot. Here are three of the best foods to add to your diet for a natural boost: Arugula: As the highest natural source of nitrates among leafy greens, its peppery flavor makes it a perfect salad topper or side dish. Spinach: A versatile staple for any meal. For the best results, try to eat it raw or lightly steamed/sautéed, as boiling can cause some of the nitrates to leach out. Celery: A crunchy, hydrating snack that is deceptively high in nitrates. It is easy to incorporate into soups, juices, or simply enjoyed on its own. 2. Keep Moving Exercise does more than strengthen muscles; it physically stimulates your endothelium. As your blood pumps faster during a walk or workout, the friction against the vessel walls signals your body to produce more nitric oxide.  Regular physical activity keeps the machinery that produces this molecule running smoothly. 3. Antioxidant Support Nitric oxide is a fragile molecule that degrades quickly, especially in the presence of oxidative stress and inflammation.  Antioxidants such as CoQ10 and Grape Seed Extract can help neutralize the free radicals that deplete nitric oxide and protect it from breaking down. This allows nitric oxide to stay active in your system longer, helping your blood vessels stay relaxed and maintaining healthy vascular tone for extended periods. In addition, studies indicate that Grape Seed Extract actively supports the enzyme (eNOS) responsible for creating nitric oxide. This means these nutrients don't just preserve the nitric oxide you have, they support your body's production of this vital molecule naturally. A Small Molecule with a Big Impact Nitric oxide may be invisible, but its effects on your quality of life are tangible.  By focusing on habits that support your endothelium, like eating nitrate-rich foods and staying active, you’re actively nourishing the pathways that keep your heart, brain, and body energized and resilient.     Scientific References & Sources Ignarro L, Buga G, Wood K, Byrns R, Chaudhuri G. (1987). Endothelium-derived relaxing factor produced and released from artery and vein is nitric oxide. Proceedings of the National Academy of Sciences. Torregrossa A, Aranke M, Bryan N. (2011). Nitric oxide and geriatrics: Implications in diagnostics and treatment of the elderly. Journal of Geriatric Cardiology. Taddei S, Virdis A, Ghiadoni L, et al. (2001). Age-related reduction of NO availability and oxidative stress in humans. Hypertension. Siervo M, Lara J, Ogbonmwan I, Mathers J. (2013). Inorganic nitrate and beetroot juice supplementation reduces blood pressure in adults: a systematic review and meta-analysis. Journal of Nutrition. Jones A. (2014). Dietary nitrate supplementation and exercise performance. Sports Medicine. Siervo M, Hussin AM, Calella P, et al. (2024). Associations between Aging and Vitamin D Status with Whole-Body Nitric Oxide Production and Markers of Endothelial Function. The Journal of Nutrition.

Does blood pressure naturally rise as you age? Read our guide to see what's considered a healthy range for you.

With the right technique, monitoring your blood pressure at home can often be more accurate than measurements taken at a doctor’s office. It helps avoid white coat hypertension, where anxiety in a medical setting causes a temporary spike in blood pressure. However, accuracy is key. Even small errors in how you sit or position your arm can lead to significantly higher readings. These false highs can cause unnecessary worry or changes in treatment that you might not actually need. Here’s a practical guide to avoiding the five most common measurement mistakes so you can trust your blood pressure numbers. Most Common Measurement Mistakes 1. Skipping the Rest Period In our busy lives, it’s natural to want to get things done quickly. You might sit down, strap on the cuff, and hit start immediately. However, rushing is one of the most common causes of inaccurate readings. Your blood pressure fluctuates constantly based on your activity level, stress, and even your posture. The Solution: Give yourself the gift of five minutes. Sit quietly in a comfortable chair for at least five minutes before you take a reading. This allows your cardiovascular system to return to its baseline resting state. Think of this as a brief moment of mindfulness for your heart. 2. Incorrect Body Positioning Your posture has a surprising impact on your blood pressure reading. Slouching, crossing your legs, or letting your feet dangle can all constrict blood flow slightly or increase resistance, leading to higher numbers. Research indicates that crossing your legs alone can increase systolic pressure by 2 to 8 mmHg. The Solution: Sit in a sturdy chair that supports your back. Keep both feet flat on the floor and uncross your legs. Your back should be supported and straight. This position ensures your body is relaxed and blood flows freely. 3. Letting Your Arm Dangle Where you place your arm matters just as much as how you sit. If your arm is hanging by your side, your blood pressure will register higher than it truly is. Conversely, if you raise your arm above your heart level, the reading may be falsely low. The Solution: Support your arm on a flat surface, such as a table or a desk. The goal is to keep the cuff at the same level as your heart (roughly mid-chest). If the table is too low, you can use a cushion or pillow to gently prop your arm up to the correct height. 4. Measuring With a Full Bladder Physical discomfort translates to physical stress on the body. A full bladder creates tension that stimulates your nervous system, which can cause a temporary spike in blood pressure. Studies have shown this can add around 10 to 15 mmHg to your reading. The Solution: Make it a habit to use the restroom before you sit down for your five-minute rest period. An empty bladder ensures that you’re comfortable and that the reading reflects your true blood pressure rather than temporary physical stress. 5. Talking or Multitasking It might feel productive to answer a text or chat with a family member while the cuff inflates, but this activity distracts your body. Active listening or speaking requires cognitive effort and can slightly elevate your heart rate and blood pressure. The Solution: Treat measurement time as a quiet zone. Avoid talking, texting, or watching television during the measurement. Remain still and silent until the monitor finishes deflating. Picking the Right Device The American Heart Association recommends an automatic, cuff-style upper arm monitor, and advises choosing a model that has been validated for accuracy. Wrist and finger monitors are generally less reliable. You can choose a device listed on ValidateBP.org, an independent registry managed by the American Medical Association that lists monitors proven to meet the highest standards of accuracy. Your Full Checklist for Accurate Readings To ensure you’re getting the best data for your heart health, try to measure at the same time each day, such as in the morning before medication and in the evening before dinner. Avoid stimulants: No caffeine, exercise, or smoking for at least 30 minutes prior. Get comfortable: Use the restroom before sitting down for your measurement. Sit in a chair with back support, keep your feet flat on the floor, and uncross your legs. Rest and reset: Sit quietly for five minutes before starting the machine. Check the fit: The cuff should be snug but not tight, and worn one inch above your elbow crease. You should be able to slide two fingers under it. It should be placed on bare skin, not over thick clothing. Position your arm: Rest your arm on a flat surface so the cuff is at heart level (mid-chest). Stay still: Remain silent and still during the reading. Avoid talking or texting. Take two readings: Take at least two measurements (one to two minutes apart) and average the results for the most reliable number. By following this and avoiding common pitfalls, you can turn a simple daily routine into a reliable tool for your long-term wellness.     Scientific References & Sources Muntner P, et al. (2019). Measurement of Blood Pressure in Humans: A Scientific Statement From the American Heart Association. Hypertension. Whelton PK, et al. (2018). 2017 ACC/AHA/AAPA/ABC/ACPM/AGS/APhA/ASH/ASPC/NMA/PCNA Guideline for the Prevention, Detection, Evaluation, and Management of High Blood Pressure in Adults. Journal of the American College of Cardiology. Pickering TG, et al. (2005). Recommendations for Blood Pressure Measurement in Humans and Experimental Animals: Part 1: Blood Pressure Measurement in Humans. Circulation.

Understanding your blood pressure is one of the most powerful steps you can take for your long-term health. While a reading of two numbers might look like simple data, it provides a window into the health of your heart and arteries. When you understand your numbers, you gain the control to make informed decisions that support your cardiovascular system for years to come. Decoding the Two Numbers A blood pressure reading measures the force of blood pushing against the walls of your arteries. It’s recorded as two numbers, measured in millimeters of mercury (mm Hg). Systolic Blood Pressure (The Top Number) This measures the pressure in your arteries when your heart beats. It indicates how hard your heart works to pump blood to the rest of your body. Diastolic Blood Pressure (The Bottom Number) This measures the pressure in your arteries between beats. This is the period when your heart rests and fills with blood. For example, a reading of 118/76 mm Hg means you have a systolic pressure of 118 and a diastolic pressure of 76. The Official Blood Pressure Chart Medical experts classify blood pressure into five specific categories. These ranges help doctors determine the best course of action for your health. According to guidelines released by the American College of Cardiology (ACC) and the American Heart Association (AHA), here’s how the numbers break down. Note that if your systolic and diastolic numbers fall into different categories, you’re classified by the higher one. Category Systolic (mm Hg) Diastolic (mm Hg) Recommended Action Normal Less than 120 and Less than 80 Maintain healthy habits. Check at least once a year. Elevated 120 – 129 and Less than 80 Aim to reach the normal range. Adopt healthy habits to prevent deterioration to Stage 1 Hypertension. Stage 1 Hypertension (High Blood Pressure) 130 – 139 or 80 – 89 Consult a doctor. Lifestyle changes are key; medication may be discussed. Stage 2 Hypertension (High Blood Pressure) 140 or higher or 90 or higher Consult a doctor. A combination of lifestyle changes and medication is often needed. Hypertensive Crisis Higher than 180 and/or Higher than 120 Recheck in 1 minute. If still ≥180 and/or ≥120: call your healthcare professional.  If you have symptoms (chest pain, shortness of breath, back pain, numbness, weakness, vision changes, difficulty speaking), call emergency services.   Understanding Your Range Normal If your blood pressure is below 120/80, your cardiovascular system is functioning efficiently. The pressure on your arterial walls is within a healthy range, minimizing wear and tear. The goal here is maintenance. A balanced diet and regular movement will help you stay in this zone. Elevated This category is a signal from your body. It means your pressure is slightly above ideal, which can increase the workload on your heart over time. The good news is that this stage is often reversible with lifestyle adjustments, such as managing stress, improving sleep, or adjusting your sodium intake. Stage 1 Hypertension At this stage, arterial pressure is consistently higher than recommended. While this sounds serious, it’s a manageable condition. Doctors often recommend lifestyle therapies first. Depending on your personal health history and risk factors, they may also consider medication to help support your heart function. Stage 2 Hypertension This indicates significant pressure on the arteries. Consistent readings in this range increase the risk of heart disease or stroke. However, modern medicine combined with healthy habits can be highly effective at bringing these numbers down to a safe level. Hypertensive Crisis If your reading exceeds 180/120, wait at least one minute and test again to rule out a reading error. If your readings are still this high and you don’t have any new or concerning symptoms, contact your healthcare professional right away. If you do have symptoms such as chest pain, shortness of breath, back pain, numbness, weakness, vision changes, or difficulty speaking, call emergency services immediately. Ensuring Accurate Readings Blood pressure fluctuates throughout the day based on activity, stress, and even posture. To ensure you get a reliable blood pressure reading that reflects your true health, follow these science-backed best practices: Rest first: Sit quietly for five minutes before taking a measurement. Position matters: Keep both feet flat on the floor and support your back. Keep your arm supported on a flat surface at heart level and make sure the cuff is placed on bare skin, not over thick clothing. Avoid stimulants: Don’t smoke, drink caffeinated beverages, or exercise within at least 30 minutes of measuring. Empty your bladder: A full bladder can temporarily increase blood pressure readings by around 10 to 15 points. Monitor consistently: Try to measure at the same time each day and take at least two readings, 1–2 minutes apart. The Bottom Line Whether your blood pressure numbers are normal or high, you have the power to influence them positively. By monitoring your trends and working with your healthcare provider, you’re taking an active and vital role in your long-term heart health.     Scientific References & Sources Whelton PK, et al. (2018). 2017 ACC/AHA/AAPA/ABC/ACPM/AGS/APhA/ASH/ASPC/NMA/PCNA Guideline for the Prevention, Detection, Evaluation, and Management of High Blood Pressure in Adults: A Report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines. Journal of the American College of Cardiology. American Heart Association. (2025). Understanding Blood Pressure Readings. Centers for Disease Control and Prevention (CDC). (2024). Measuring Your Blood Pressure. U.S. Department of Health & Human Services. Pickering TG, et al. (2005). Recommendations for Blood Pressure Measurement in Humans and Experimental Animals. Circulation.