What Is Type 3 Diabetes? Insulin Resistance In The Brain That Could Trigger Alzheimer’s
Most people are aware of type 1 and type 2 diabetes, but did you know there is a type 3 diabetes as well! It is a more obscure term. Although it is not an accepted medical diagnosis, type 3 diabetes has been discussed in the literature as a possible relationship between insulin resistance in the brain and Alzheimer's disease. This link has been described to help explain how metabolic disorders impact brain health, causing cognitive decline and dementia.
Type 3 diabetes is more of a misnomer because it should not be confused with type 3c diabetes, which relates to pancreatic dysfunction. The term "type 3 diabetes," on the other hand, has been loosely used by some scientists to analogously propose that Alzheimer's disease is strongly implicated with insulin resistance in the brain.
This concept was conceptualized by Dr. Suzanne de la Monte and Dr. Jack Wands of Brown University in the year 2008. This hypothesis postulated that Alzheimer's disease may be called type 3 diabetes for it bears many similarities with glucose metabolism disorder type 2 diabetes. Their concept arises from the basic principle that insulin is fundamental to blood sugar regulation, but it is also the case with the brain. When brain cells become insulin-resistant, they lose access to glucose, impairing their function.
Research published in the Journal of Diabetes Science and Technology supports this hypothesis by indicating that insulin resistance can be a significant contributor to the occurrence of dementia, also referred to as Alzheimer's. The symptoms of memory loss and diminished reasoning are associated with impaired glucose metabolism in the body, especially in the cerebral tissue.
Although type 3 diabetes is not a "medical term," its symptoms correlate well with Alzheimer's diseases that are known to reduce the ability to think in an efficient manner and bring down brain health. These signs are:
- Loss of memory, especially short-term.
- Poor judgment and judgment ability
- Failure in recognizing people or places familiar once.
- Failure in the process of reading, writing or processing numbers
- Anxiety, agitation, or mood changes.
- Disorganized thoughts or confusion
- Lack of impulse control
As the disease advances, patients may be afflicted with severe complications including an inability to swallow or control their bodily functions. In the final stages, most patients die from fatal complications such as aspiration pneumonia.
This may not be well understood with regards to type 3 diabetes, or the exact link between insulin resistance and Alzheimer's disease. Some identified contributing factors include the following:
Insulin acts as an important regulatory mechanism of brain functions such as memory and cognition. The reduction in insulin signaling may impair metabolism of brain cells, thus bringing about neurodegeneration.
These diseases show a strong relationship and those individuals diagnosed with type 2 diabetes have double chances of getting Alzheimer's. In the two, the main causes can be chronic inflammation, oxidative stress, and a defect in glucose metabolism.
Insulin resistance associated with obesity, stress, and an unhealthy diet is considered a cause that may increase the chances of Alzheimer's disease.
Researches in Frontiers in Neuroscience and The Lancet Neurology have also highlighted that drugs used for antidiabetic medication may be crucial for the prevention or at least slowing down the course of Alzheimer's.
In 2022, in a study in Pharmaceuticals, researchers studied biomarker uptake in brain regions implicated in the faulty uptake and metabolism of blood sugar in Alzheimer’s patients.
Emerging Therapies
Research into such treatments as intranasal insulin has also been promising. Intranasal delivery of insulin directly to the brain has been reported to enhance glucose uptake by brain cells, improve memory, and boost cognitive performance. While such clinical trials have been shown to be successful, additional research is needed for safety and efficacy.
Medications
For patients being aggressive or agitated, antipsychotic drugs may be prescribed; however, therapies such as cognitive rehabilitation as well as cognitive stimulation therapy serve to preserve memory and executive function.
Lifestyle Interventions
Diet, exercise, and stress management are critical in preventing and managing insulin resistance. A review in the Journal of Alzheimer's Disease also highlighted the benefits of Kirtan Kriya meditation, which can regulate genes involved in insulin and glucose metabolism, improve sleep, and reduce inflammation.
Although type 3 diabetes is not officially recognized, its connection to Alzheimer’s disease underscores the importance of proactive measures for brain health. Some prevention strategies include:
1. Healthy Diet
Consuming a balanced diet rich in antioxidants, whole grains, and healthy fats may support brain health.
2. Regular Exercise
Physical activity improves insulin sensitivity, reduces inflammation, and enhances overall metabolic health.
3. Stress Reduction
Mindfulness practices, including meditation, have been shown to lower stress levels, which can reduce the risk of cognitive decline.
The term type 3 diabetes brings out the complex relationship between metabolic disorders and brain health. Even though it is not a recognized medical condition, the concept emphasizes the crucial role of insulin in brain function and its possible contribution to Alzheimer's disease. Continued research will hopefully provide hope for therapies such as intranasal insulin and lifestyle modifications.
Credits: Canva
The use of nicotine pouches is rising sharply across the UK, especially among young adults, recent research suggests. These small pouches sit between the lip and gum and release nicotine gradually into the body. Available in many flavours, they often include sweeteners and plant-based fibres. But are they truly a better option than smoking, or could nicotine pouches still pose health risks? We take a closer look below.
Nicotine pouches are small, tobacco-free sachets that contain nicotine powder along with flavourings and fillers. They are placed between the lip and gum, similar to snus, allowing nicotine to be absorbed without smoke, vapour, or spitting. Marketed as a discreet way to consume nicotine, they still deliver a highly addictive substance and expose users to certain chemicals. Health experts have raised concerns, particularly for young people, despite these products often being promoted as a “safer” choice than cigarettes.
Popular brands such as Zyn, On!, and Velo now dominate a fast-growing market, according to the CDC. Like vaping, they do not contain tobacco and are generally viewed as less harmful than smoking.
A recent study led by researchers at University College London (UCL) found that over the past five years, about 522,000 additional people in the UK have started using nicotine pouches, with usage rising from 0.1% to 1% of the adult population.
This has raised an important question: are nicotine pouches actually safer than smoking, and what is driving their sudden popularity?
Speaking on *Mornings with Ridge and Frost*, lead study author Dr Harry Tattan-Birch from UCL’s Institute of Epidemiology and Health Care told Sky News that the risks linked to nicotine pouches are much lower than those associated with smoking. “There’s no tobacco and no combustion,” he explained. “And we know it’s the burning of tobacco that causes most smoking-related diseases.”
That said, Dr Tattan-Birch and his colleagues stressed that these products are not harmless and should never be accessible to children. The NHS notes that while nicotine itself does not cause serious diseases in the way tobacco does, young people’s developing brains and lungs are more vulnerable to its effects, and dependency can form quickly.
UCL research fellow Eve Taylor also told Sky News that nicotine pouches are “far less harmful than smoking,” but cautioned that they are still relatively new. Because of this, their long-term effects are not yet fully understood. “We can look at what’s in them to estimate potential risks,” she said. “They’re not risk-free. Users are still exposed to some toxic substances, even if the levels are much lower.”
According to UCL’s findings, among participants surveyed between January 2022 and March 2025, 69% of nicotine pouch users were also using other nicotine products. More than half of them, 56%, were still smoking cigarettes. Around one in six users, or 16%, reported that they had never been regular smokers, suggesting the habit was not linked to quitting cigarettes.
As quoted by Sky News, Dr Tattan-Birch said the public health impact of nicotine pouches depends largely on who is using them. “If a young person who might otherwise smoke switches to pouches, that could reduce harm,” he said. “But if someone who wouldn’t have used nicotine at all starts using them, the risk of harm goes up.”
Researchers added that more studies are needed to understand whether nicotine pouches genuinely help people stop smoking in the long run.
Nicotine patches are widely regarded as safer than smoking and are a well-established aid for quitting. They provide a steady dose of nicotine to reduce cravings without exposing users to tar or cancer-causing chemicals found in cigarettes. However, they are not completely without side effects. Common issues include skin irritation, headaches, and sleep disturbances. People with serious heart conditions or those who are pregnant are advised to speak with a doctor before using them, as nicotine can still affect heart rate and blood pressure, though far less dangerously than smoking, according to the CDC.
Credits: Canva
People have been advised not to rely on a commonly used medicine when dealing with flu or cold symptoms. The UK Health Security Agency (UKHSA) has released an important warning about the use of antibiotics. Antibiotics are drugs designed to treat bacterial infections. They work by killing bacteria or stopping them from growing and multiplying. But why are health authorities urging caution against antibiotics during the current rise in flu cases?
This year, a new strain of influenza, known as influenza A H3N2 or the subclade K variant, is spreading quickly across several countries, including the United States, according to Fox News. This week, the Centers for Disease Control and Prevention reported an 8.1% increase in positive flu tests across the country.
The UK is facing a similar situation. The NHS has warned that hospitals in England are dealing with a “worst case scenario” this December due to a surge in so-called “super flu” cases. An average of 2,660 patients per day were hospitalised with flu during the first week of December, the highest number ever recorded for this time of year and a 55% jump from the previous week.
Flu Influenza: Why Is UKHSA Warning Against Taking Antibiotics During Super Flu?
Antibiotics are medicines specifically meant to fight bacterial infections by destroying bacteria or preventing them from spreading. This helps the body’s immune system clear the infection. However, it is important to understand that antibiotics do not work on viral infections. These include illnesses such as the common cold, flu, and COVID-19.
In a post shared on social media platform X, the UKHSA stated: “Antibiotics don’t work for colds and flu – pharmacists can advise you on how to treat your symptoms.”
The UKHSA has urged people to follow a few “simple” rules when it comes to antibiotics:
This advice comes as flu cases continue to rise across the UK. Data from the UKHSA showed that in the week ending December 7, flu positivity in England increased, with the weekly average reaching 21 per cent, up from 17 per cent the week before.
Hospital admissions linked to flu also rose to 10.05 per 100,000 people, compared with 8.09 per 100,000 previously.
The warning follows the publication of the UKHSA’s English Surveillance Programme for Antimicrobial Utilisation and Resistance (ESPAUR) report in November. The report revealed that around 400 people each week in England are diagnosed with antibiotic-resistant infections.
These infections are harder to treat and can result in serious health problems. Experts say that the excessive use of antibiotics over time has reduced their effectiveness, leading to the rise of so-called “superbugs.”
The NHS explains that these are types of bacteria that have developed resistance to several antibiotic treatments, including:
The NHS has warned: “These infections can be serious and difficult to treat, and are becoming an increasing cause of disability and death worldwide. The greatest concern is that new strains of bacteria could develop that cannot be treated with any existing antibiotics.”
Dr Alicia Demirjian, consultant epidemiologist and clinical lead for antimicrobial resistance and prescribing at the UKHSA, said: “Antibiotic resistance is one of the biggest threats to modern medicine, but the good news is that we can all help reduce it.”
When a GP prescribes antibiotics, it is vital to follow the instructions carefully and not miss any doses.
The NHS advises: “If you forget to take a dose of your antibiotics, check the patient information leaflet that comes with your medicine to see what to do. If you’re unsure, speak to a pharmacist or your GP.
“In most cases, you can take the missed dose as soon as you remember and then continue the course as normal. But if it’s nearly time for your next dose, skip the missed one and carry on with your regular schedule.” You should never take a double dose to make up for a missed one.
Disclaimer: This article is for informational purposes only and is not intended as medical advice. Antibiotics or any other medicines should only be taken after consulting a qualified healthcare professional. Always follow the guidance of your doctor, pharmacist, or local health authority regarding diagnosis and treatment.
Credits: Canva
Ozempic (semaglutide) has quickly become a widely used drug for managing type 2 diabetes and supporting weight loss. With its growing use, many people are wondering whether it has any interaction with alcohol. There have also been reports suggesting that Ozempic may reduce alcohol cravings in some users.
While it is not always necessary to completely avoid alcohol while taking Ozempic, doctors say there are certain side effects and risks that should not be ignored. To understand this better, we spoke with Dr Monika Sharma, Senior Consultant in Endocrinology at Aakash Healthcare.
Also Read: Nicotine Pouches: Are They Really A Safer Alternative To Smoking, Or Just Another Health Risk?
Yes, alcohol can feel noticeably stronger when taken alongside medications like Ozempic, and this has a lot to do with how the drug alters digestion, metabolism, and brain signalling. Ozempic belongs to a class of medicines called GLP-1 receptor agonists. It is primarily prescribed for type 2 diabetes and is increasingly used for weight management. One of its key actions is slowing down stomach emptying, meaning that both food and liquids stay in the stomach longer before moving into the intestines.
Dr Sharma explains, “When alcohol is consumed, delayed gastric emptying can lead to uneven absorption. In some people, alcohol enters the bloodstream later but more rapidly once absorption begins, which can raise blood alcohol levels faster and intensify intoxication even with smaller amounts.”
Another major factor is appetite suppression. Many people on Ozempic eat significantly less or skip meals altogether, either intentionally or due to reduced hunger. Drinking alcohol on an empty or nearly empty stomach allows it to be absorbed more quickly, as there is little food to slow the process. As a result, an amount of alcohol that once felt manageable may suddenly cause dizziness, flushing, nausea, or loss of coordination much sooner than expected.
Ozempic also affects areas of the brain linked to reward, fullness, and impulse control. Emerging research suggests that GLP-1 receptor agonists may lower cravings for substances like alcohol, while at the same time increasing sensitivity to its effects. This means that even if the desire to drink decreases, the body’s reaction to alcohol may feel stronger or more unpleasant. Many users report unusual tiredness, light headedness, or nausea after just one drink, often describing it as alcohol “hitting twice as hard.”
Blood sugar regulation is another concern. Alcohol can cause fluctuations in glucose levels, and when combined with a medication that tightly controls insulin release and glucose use, the risk of low blood sugar increases, particularly for people with diabetes. Symptoms of hypoglycemia include sweating, shaking, confusion, and palpitations. These signs can resemble alcohol intoxication or worsen its effects, making the experience more intense and potentially dangerous.
Dehydration also plays a role. Ozempic can cause side effects such as nausea, vomiting, and reduced fluid intake, all of which increase the risk of dehydration. Alcohol further depletes fluids, and when the body is already low on hydration, alcohol’s impact on the brain and heart becomes stronger. This can lead to faster intoxication, headaches, and a longer recovery time after drinking.
Gastrointestinal sensitivity should also be considered. Ozempic commonly causes nausea, bloating, acid reflux, and stomach discomfort, especially in the early months of treatment. Alcohol irritates the stomach lining and relaxes the lower oesophageal sphincter, which can worsen these symptoms. Together, even small amounts of alcohol can trigger stronger negative reactions, reinforcing the feeling that tolerance has suddenly dropped.
While Ozempic does not directly interact with alcohol the way some medications do, its indirect effects on digestion, hydration, metabolism, and the nervous system can make alcohol feel more potent. This is why moderation is strongly advised. People taking Ozempic should limit alcohol intake, avoid drinking on an empty stomach, stay well hydrated, and pay close attention to how their body responds.
In short, Ozempic can make alcohol feel stronger not because it increases alcohol levels directly, but because it changes how the body processes and reacts to alcohol. Being aware of this interaction can help people make safer, more informed choices while using this medication.
© 2024 Bennett, Coleman & Company Limited