Can being hungry affect blood pressure?

Can not eating cause your blood pressure to go lower or higher? Fasting can help lower blood pressure. It can also result in an electrolyte imbalance. That can make the heart prone to arrhythmias, or problems with the rhythm or rate of your heartbeat.

healthline.com - Blood Pressure After Eating, Plus Other Factors That Affect Readings

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Blood pressure is a measurement of the force of your blood pushing against your artery walls when it travels from your heart to the rest of your body. Blood pressure below 120/80 is normal. Blood pressure is generally considered low when it’s less than 90/60. High blood pressure, called hypertension, increases the risk of heart attack and stroke. Low blood pressure, called hypotension, increases the risk of: dizziness

weakness

fainting

damage to your heart and brain If you check your blood pressure at home, a number of factors can affect your blood pressure readings. Read on to learn how eating, not eating, diet, and other factors can affect these readings. Can eating cause your blood pressure to go lower or higher? If your doctor has suggested measuring your blood pressure at home, it’s likely they’ve recommended you take your morning measurement before eating. That’s because the reading will often be lower than is typical following a meal. When you eat, your body directs extra blood to the stomach and small intestine. At the same time, blood vessels that are distant from your digestive system narrow, and your heart beats harder and faster. This action maintains the blood flow and blood pressure to your brain, extremities, and elsewhere in your body. If your blood vessels and heart don’t respond correctly to the extra blood directed to your digestive system, blood pressure everywhere but the digestive system will decrease. This is called postprandial hypotension. Postprandial hypotension can result in: lightheadedness

dizziness

syncope (fainting)

falling

angina (chest pain)

vision disruption

nausea According to a 2010 research review , postprandial hypotension may affect up to 33 percent of older adults living in nursing homes. Can not eating cause your blood pressure to go lower or higher? Fasting can help lower blood pressure. It can also result in an electrolyte imbalance. That can make the heart prone to arrhythmias, or problems with the rhythm or rate of your heartbeat. Discuss fasting with your doctor before trying it. Does what you eat matter? You can affect your blood pressure with diet. If you have high blood pressure, you can lower it by altering what you eat. The Dietary Approaches to Stop Hypertension (DASH) diet can lower your blood pressure up to 11 mm Hg . The DASH diet is low in saturated fat and cholesterol and rich in: vegetables

fruits

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low fat dairy products

whole grains It is important to note the DASH diet also includes limiting salt and added sugars. Reducing sodium can also lower blood pressure Reducing sodium in your diet, even by a small amount, can reduce your blood pressure. A 2015 study found the Mediterranean diet can lower blood pressure as well. It’s similar to the DASH diet, but higher in fat. The fat in the Mediterranean diet is primarily monounsaturated fat from nuts, seeds, and olive oil. The study also suggested getting enough of the following may lower blood pressure: potassium

magnesium

protein

fiber

Factors that can affect blood pressure readings If you’re monitoring your blood pressure at home, there are many factors that might affect the reading, including: Exercise. Take your blood pressure before exercise or you might get an elevated reading. Take your blood pressure before exercise or you might get an elevated reading. Meals. In the morning, take your blood pressure before eating, as digesting food can lower your blood pressure. If you must eat first, wait 30 minutes after eating before taking a measurement. In the morning, take your blood pressure before eating, as digesting food can lower your blood pressure. If you must eat first, wait 30 minutes after eating before taking a measurement. Bathroom. A full bladder can give you an elevated reading. Empty it before taking a measurement. A full bladder can give you an elevated reading. Empty it before taking a measurement. Cuff size. If the monitor’s cuff doesn’t properly fit your upper arm, you may get inaccurate readings. Your doctor can tell you if your monitor’s cuff fits properly. If it doesn’t, they can show you how to position it for best results. If the monitor’s cuff doesn’t properly fit your upper arm, you may get inaccurate readings. Your doctor can tell you if your monitor’s cuff fits properly. If it doesn’t, they can show you how to position it for best results. Clothing. For an accurate reading, don’t put the cuff over clothing; put it over bare skin. If you need to roll up your sleeve to the point it’s tight on your arm, take off your shirt or take your arm out of the sleeve. For an accurate reading, don’t put the cuff over clothing; put it over bare skin. If you need to roll up your sleeve to the point it’s tight on your arm, take off your shirt or take your arm out of the sleeve. Temperature. If you’re cold, you might get a higher than expected reading. If you’re cold, you might get a higher than expected reading. Position. For consistent and comparable results, always use the same arm and position it properly. It should be rested at the level of your heart on a chair arm or table. Your back should be supported and your legs should be uncrossed.

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For consistent and comparable results, always use the same arm and position it properly. It should be rested at the level of your heart on a chair arm or table. Your back should be supported and your legs should be uncrossed. Stress. To get the most accurate reading, avoid stressful thoughts and sit in a comfortable position for 5 minutes before taking a measurement. To get the most accurate reading, avoid stressful thoughts and sit in a comfortable position for 5 minutes before taking a measurement. Talking. Avoid talking when taking your blood pressure, as it could elevate the measurement. To make sure you’re getting accurate information, bring your home blood pressure monitor to your doctor’s office once a year. You can compare its readings with the readings from your doctor’s equipment. Have your blood pressure checked as part of your regular doctor’s visits. When you’re ages 18 to 39, ask your doctor for a blood pressure reading every 3 to 5 years, if you are not at risk for high blood pressure and have a prior “normal” blood pressure reading. If you have a high risk for high blood pressure, are overweight, or are over age 40, ask for a reading every year. Call your doctor if you: have a high blood pressure reading (above 120/80) and you haven’t received a diagnosis of hypertension have well-managed blood pressure, but it measures above the “normal” range more than once are concerned that your blood pressure medication is causing side effects When to seek immediate medical attention Seek emergency medical services if your blood pressure is markedly elevated with or without the following symptoms: headache