Friends, do you know that uncontrolled Diabetes can also affect your Brain Functions.
Yes, high blood sugar, or hyperglycemia can definitely affect brain function, particularly over time. It can lead to cognitive problems, brain damage, and even risk of dementia. People often don’t know that their brain is being affected. 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.
Short-term effects
High blood sugar can cause temporary cognitive difficulties, such as slowing down visual reaction time or increasing mental subtraction errors.
Long term effects
Over time high blood sugar damages blood vessels in brain reducing oxygen and nutrient delivery which can lead to:
• Brain cell death- This can cause memory problems, difficulty in thinking, and impaired cognitive functions.
• Brain shrinkage-High blood sugar can also cause the brain to shrink, further impacting cognitive functions.
• Increase risk of vascular dementia- This type of dementia is linked to blood vessel damage in the brain, and high blood sugar can increase the risk.
• Neuropathy-High blood sugar can also damage nerves including those in brain. This nerve damage known as neuropathy can also contribute to cognitive problems like confusion and memory loss.
Special areas affected- High blood sugar can affect areas of the brain responsible for memory, learning spatial navigation, and other cognitive processes.
Impact on mental health- High blood sugar can also contribute to mental health problems like stress, depression, and eating disorders.
Individual variability- The extent to which high blood sugar affects brain can vary from person to person, and severity of the effects can depend on the factors like age, the type of diabetes, and other health conditions.
How sugar negatively impacts your brain and cognitive health
• Retard responses.
• Addiction
• Memory
• Mood
• Mental capacity.
How low blood sugar effects brain functions
Low blood sugar (hypoglycemia) happens when your blood sugar level drop below 70/80 mg/dl. It can be dangerous if left untreated. 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 dizzy, shaky, or irritable. Youmay have trouble walking or talking. Severe low blood sugar can causes you to pass out or have seizures. It can even put you in coma.
Some people with low blood sugar may not have any symptoms, which can make it hard to treat early. This is why it’s important to check your blood sugar often.
Research also shows that big dips in blood sugar may be linked to problems with depression, memory, and attention. If you have any of these problems and often have low blood sugar, talk to your doctor, who can
• Help figure out why you’re having low blood sugar.
• Adjust your medicine if needed.
• Refer you to a mental health counselor.
Keep brain health top of mind
You can take steps to improve or prevent problems with brain health and diabetes, such as:
• Follow a healthy eating plan.
• Maintain healthy weight.
• Keep your blood sugar within target levels.
• Get regular physical activity.
• Take medicine as prescribed.
• Stop smoking, if you smoke.
• Manage stress.
In essence, managing blood sugar levels is crucial to maintaining brain health and cognitive functions, especially for individuals with diabetes.
Waiting for your response on this blog.
Anil Malik
Mumbai, India
11th June 2025