A blood pressure of 100/62 is a good reading. According to the American Heart Association and American College of Cardiology, normal blood pressure for adults is a systolic (top number) below 120 and a diastolic (bottom number) below 80. At 100/62, both of your numbers fall comfortably within that range. For most people, this reading signals a healthy cardiovascular system, not a problem.
That said, “normal on paper” and “normal for you” aren’t always the same thing. Whether 100/62 is truly good depends on how you feel at that number and whether it represents a change from your usual readings.
Where 100/62 Falls on the Scale
Blood pressure categories help put your numbers in context. A reading of 100/62 sits solidly in the normal zone, well below the elevated range (120–129 systolic) and far from high blood pressure territory (130/80 and above). It’s also above the loosely defined threshold for hypotension, which most clinicians consider to be a systolic reading below 90 or a diastolic below 60.
Your diastolic number of 62 is just slightly above that 60 cutoff, which is perfectly fine. Many young, active, and otherwise healthy adults walk around with readings in the low 100s over low 60s without any issues at all. Athletes, in particular, often have resting blood pressures in this range because their hearts pump blood efficiently.
When a Low-Normal Reading Is a Concern
Blood pressure only becomes a problem when it causes symptoms or drops suddenly from where it usually sits. If 100/62 is your typical reading and you feel fine, there’s nothing to worry about. But if your blood pressure is normally closer to 120/80 and has recently dropped to 100/62, that shift may explain new symptoms like:
- Dizziness or lightheadedness, especially when standing up quickly
- Fatigue that doesn’t improve with rest
- Blurred vision
- Nausea
- Difficulty concentrating
- Fainting or near-fainting episodes
If you’re experiencing any of these regularly, the reading is worth bringing up with a doctor, even though the number itself looks normal. Context matters more than the number alone.
What Can Push Blood Pressure Lower
Several factors can contribute to chronically low or dropping blood pressure. Dehydration is one of the most common and most fixable. When your blood volume drops from not drinking enough fluids, your pressure falls with it. Alcohol has the same effect, lowering blood pressure even in moderate amounts.
Nutritional deficiencies can also play a role. Low levels of vitamin B-12, folate, or iron can prevent your body from producing enough red blood cells, a condition called anemia. Fewer red blood cells means less blood volume and lower pressure. Hormonal conditions, including thyroid disorders and adrenal insufficiency (Addison’s disease), can reduce blood pressure by disrupting the hormones that help regulate it. Diabetes and certain heart conditions, including a slow heart rate, are other potential contributors.
Some medications lower blood pressure as either their intended effect or a side effect. If you recently started a new prescription and noticed your readings dropping or new symptoms appearing, that’s worth a conversation with whoever prescribed it.
Blood Pressure During Pregnancy
If you’re pregnant and seeing 100/62, this is likely completely expected. Blood pressure naturally dips during the second trimester as your blood vessels relax to accommodate increased blood flow to the uterus. A reading in the low 100s is common during this stage and typically rises back toward your pre-pregnancy baseline in the third trimester. Providers watch more closely for high blood pressure during pregnancy (140/90 or above), which signals potential complications like gestational hypertension.
Making Sure Your Reading Is Accurate
A single reading can be misleading if you didn’t measure correctly. The CDC recommends a specific routine to get reliable numbers. Avoid eating, drinking, smoking, or exercising for at least 30 minutes before measuring. Empty your bladder first. Then sit in a chair with your back supported, both feet flat on the floor, legs uncrossed, for at least five minutes before taking the reading.
When you do measure, rest your arm on a table at chest height with the cuff snug against bare skin, not over a sleeve. Stay still and don’t talk during the reading. Take at least two measurements, one or two minutes apart, and average them. If your first reading was 100/62, confirm it with a second. Consistent results across multiple readings on different days give you a much more reliable picture than any single measurement.
Simple Ways to Manage Low-Normal Pressure
If 100/62 is your baseline and you occasionally feel lightheaded or sluggish, a few lifestyle adjustments can help keep your blood volume and circulation steady.
Drink more water throughout the day. Even mild dehydration reduces blood volume and can amplify symptoms of low blood pressure. Cutting back on alcohol helps for the same reason. You can also slightly increase your salt intake, which raises blood pressure by encouraging your body to retain more fluid. This is the opposite of what most heart health advice says, but for people with genuinely low pressure, a bit of extra sodium can make a noticeable difference.
How you move matters too. When getting up from bed or a low chair, do it slowly. Standing too fast can cause blood to pool in your legs, temporarily starving your brain of oxygen and making you dizzy. If you feel lightheaded while standing, crossing your legs tightly at the thighs and squeezing, or propping one foot on a chair and leaning forward, pushes blood back toward your heart and brain quickly. Regular exercise, around 150 minutes of moderate activity per week, also trains your cardiovascular system to handle changes in position and exertion more smoothly. Just avoid exercising in hot, humid conditions, which can drop your pressure further.