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1. www.mayoclinic.org › diseases-conditions › diabetesDiabetes - Symptoms and causes - Mayo Clinic

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   Mar 27, 2024 · Diabetes mellitus refers to a group of diseases that affect how the body uses blood sugar (glucose). Glucose is an important source of energy for the cells that make up the muscles and tissues. It's also the brain's main source of fuel. The main cause of diabetes varies by type.

2. www.mayoclinic.org › symptoms-causes › syc-20351193Type 2 diabetes - Symptoms and causes - Mayo Clinic

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   Mar 14, 2023 · High blood sugar levels are the main problem in diabetes. Learn about lifestyle changes to lower the risk and treatments to manage type 2 diabetes.

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4. www.mayoclinic.org › symptoms-causes › syc-20373685Hypoglycemia - Symptoms and causes - Mayo Clinic

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   Nov 18, 2023 · The body and brain no longer produce signs and symptoms that warn of a low blood sugar, such as shakiness or irregular heartbeats (palpitations). When this happens, the risk of severe, life-threatening hypoglycemia increases.

5. hms.harvard.edu › brain › sugar-brainSugar and the Brain - Harvard Medical School

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   High blood glucose levels can affect the brain’s functional connectivity, which links brain regions that share functional properties, and brain matter. It can cause the brain to atrophy or shrink. And it can lead to small-vessel disease, which restricts blood flow in the brain, causing cognitive difficulties and, if severe enough, spurring ...

6. www.cdc.gov › effects-of-diabetes-brainYour Brain and Diabetes - CDC

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   Jul 16, 2024 · When your brain doesn't get enough sugar, it also doesn't get enough oxygen. And unlike high blood sugar, the signs of low blood sugar are often immediate. Symptoms of low blood sugar may include feeling dizzy, shaky, or irritable. You may have trouble walking or talking. Severe low blood sugar can cause you to pass out or have seizures.

7. newsnetwork.mayoclinic.org › discussion › high-bloodHigh Blood Sugar May Cause Noticeable Symptoms - Mayo Clinic ...

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   Dec 7, 2012 · Although you can't know your level of blood sugar without a blood test, high blood sugar may cause symptoms that are noticeable. The most common symptoms of diabetes are frequently feeling thirsty, urinating often, losing weight, feeling tired and having sores that heal slowly.

8. People also ask

   How does blood sugar affect the brain?

   • Your brain is sensitive to the amount of glucose (sugar) it receives. Both high and low blood sugar can damage blood vessels in the brain. Help prevent problems by keeping your blood sugar close to target levels. Your brain is your body's command center. To do all its work, your brain uses sugar in your blood for energy.

   Your Brain and Diabetes | Diabetes | CDC - Centers for Disease Control

   www.cdc.gov/diabetes/diabetes-complications/effects-of-diabetes-brain.html

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   Does the brain need sugar?

   • “The brain is dependent on sugar as its main fuel,” says Vera Novak, MD, PhD, an HMS associate professor of medicine at Beth Israel Deaconess Medical Center. “It cannot be without it.” Discover the latest news on the brain from Harvard Medical School Learn More Although the brain needs glucose, too much of this energy source can be a bad thing.

   Sugar and the Brain - Harvard Medical School

   hms.harvard.edu/news-events/publications-archive/brain/sugar-brain

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   What happens if your blood sugar is too high?

   • High blood sugar over time damages blood vessels in the brain that carry oxygen-rich blood. When your brain receives too little blood, brain cells can die. This can cause problems with memory and thinking and eventually can lead to vascular dementia. Low blood sugar (hypoglycemia) happens when your blood sugar levels drop below 70 mg/dL.

   Your Brain and Diabetes | Diabetes | CDC - Centers for Disease Control

   www.cdc.gov/diabetes/diabetes-complications/effects-of-diabetes-brain.html

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   What happens if your blood sugar is too low?

   • The device can alert you when your blood sugar is too low. If you have diabetes, episodes of low blood sugar are uncomfortable and can be frightening. Fear of hypoglycemia can cause you to take less insulin to ensure that your blood sugar level doesn't go too low. This can lead to uncontrolled diabetes.

   Hypoglycemia - Symptoms and causes - Mayo Clinic

   www.mayoclinic.org/diseases-conditions/hypoglycemia/symptoms-causes/syc-20373685

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   Can low blood sugar cause a seizure?

   • Severe low blood sugar can cause you to pass out or have seizures. It can even put you in a coma. Some people with low blood sugar may not have any symptoms, which can make it hard to treat early.

   Your Brain and Diabetes | Diabetes | CDC - Centers for Disease Control

   www.cdc.gov/diabetes/diabetes-complications/effects-of-diabetes-brain.html

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   Why is my blood sugar so low if I eat a lot?

   • Sudden, intense hunger, even after you’ve eaten, may be a sign that your body doesn’t convert food to blood sugar in the right way. Illness or certain drugs can cause it, too. If you have diabetes, your doctor might be able to adjust your medication, which is often the source of the problem. Actually, it isn’t low blood sugar by itself.

   How Blood Sugar Levels Affect Your Body - WebMD

   www.webmd.com/diabetes/ss/slideshow-blood-sugar-high-low

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9. www.webmd.com › diabetes › ssHow Blood Sugar Levels Affect Your Body - WebMD

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   Jan 28, 2023 · Low glucose can unsettle your central nervous system, which controls how you move. When that happens, your body releases hormones, like adrenaline, to help bring your levels back up.