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
India’s growing dependence on quick, over-the-counter remedies has drawn fresh concern from a senior orthopaedic and sports surgeon in New Delhi. In a recent Instagram video, Dr Obaidur Rahman of Dr Ram Manohar Lohia Hospital warned that the country’s casual use of a common antibiotic is undermining its effectiveness and pushing India closer to a major public health challenge. His message, shared through a post and video, called attention to an urgent issue that often goes unnoticed in everyday medical choices.
Azithromycin, sold under brand names such as Zithromax, Azee and Zmax, is a macrolide antibiotic prescribed for various bacterial infections. It works by slowing the growth of harmful bacteria. It does not help with viral illnesses like the common cold or flu, according to MedlinePlus.
Azithromycin Is Being Used “More Than Toffee or Roti”
Dr Rahman explained that one particular antibiotic has become so familiar in Indian homes that many people take it without a second thought. He noted that families frequently reach for this medicine to treat colds, coughs and mild fevers, despite the fact that most of these illnesses are viral. Because antibiotics do not work on viruses, this habit has increased unnecessary exposure and created ideal conditions for resistance to form.
In his post, he described the extent of the overuse by saying that the tablet is consumed even more commonly than basic household foods. This pattern, he said, has quietly pushed India into a vulnerable zone.
The antibiotic at the center of his warning is Azithromycin, a drug often prescribed for sore throats and upper respiratory tract infections. Dr Rahman noted that it was once effective against Mycoplasma Pneumonia, a bacterium responsible for pneumonia in adults and children.
He pointed out that this is no longer the case. According to him, India now shows an alarming 80 to 90 percent resistance to Azithromycin when treating infections caused by this bacterium. A medicine that once addressed a wide range of respiratory problems is no longer reliable for many patients.
Dr Rahman said that antibiotic resistance is not an abstract idea but something he encounters in his orthopaedic practice. He has seen cases where routine antibiotics fail entirely, leaving patients with few options. When commonly used drugs stop working, he added, treatment becomes more complicated, more expensive, and sometimes impossible.
His concern is that if such misuse continues unchecked, India could face a situation where even simple infections become difficult to manage.
The surgeon urged people to avoid taking antibiotics without proper medical advice. Most seasonal respiratory infections resolve on their own, and unnecessary drugs only add to the resistance problem. He encouraged viewers to share the information, especially with those who often purchase antibiotics over the counter.
Dr Rahman, who works at PGIMER and RML Hospital and specialises in bone, joint and sports injury care, said his experience treating a large volume of patients has made the issue impossible to ignore. He believes that without immediate changes in how antibiotics are used, India risks losing access to medicines that save lives in emergencies.
His message acts as a reminder that antibiotic resistance does not appear suddenly. It builds slowly through small, routine choices. And, as he warns, the cost of ignoring these early signs may be far greater than most people realise.
(Credit - Canva)
In a recent video, a neurosurgeon listed things he would start doing if he had to work on his brain health, ‘rebuilding it’, from scratch. Many people are focusing on health and bringing about a change in their life so that their health doesn’t suffer. If you wish to do the same but do not know where to start from, Dr Jay Jagannathan, MD, from Jay Jagannathan, MD, explains five easy steps with which you can start.
Your brain health is affected by many things around you, your habits, your diet, who you spend your time with etc. In the video Dr Jaggannath listed 5 things he would start doing if he had to start working on his brain health from the beginning.
In the caption he explained, “After years in neurosurgery, I’ve learned this: Your brain doesn’t need perfection — it needs consistency, balance, and protection. And the biggest changes often come from the simplest habits.”
five key steps they would take to completely reset and improve their brain health. These strategies focus on combining strict discipline with intentional rest and mindful activities, recognizing the direct connection between physical habits and mental performance.
The first and most critical step is maintaining strict sleep schedule discipline. This means committing to getting at least six to eight hours of quality sleep every single night without fail. If the individual has a very early start to their day, they must prioritize going to bed much earlier to ensure they meet this crucial rest quota. Prioritizing consistent sleep is essential for the brain to consolidate memories and perform necessary repairs.
The second action involves incorporating regular, low-grade resistance (strength) training into the weekly routine. This exercise is especially important for people who spend long hours on their feet, like surgeons. Committing to low-grade resistance training for at least two to three days per week is considered extremely vital because physical strength and exercise directly support better circulation and overall body health, which feeds directly into improved brain function.
The neurosurgeon stressed the importance of dedicated time for regular meditation. They pointed out that a strong mind-body interface is crucial for endurance and clarity, particularly in demanding fields like surgery. Therefore, engaging in mindful practices such as yoga or meditation is necessary to establish and maintain that vital connection, allowing the brain and body to work together harmoniously and manage high stress levels.
The fourth piece of advice is to actively and consciously avoid burnout cycles. Burnout is a dangerous state of chronic stress that can severely damage both the brain's structure and its ability to function effectively. This strategy requires setting firm boundaries and intentionally managing one's workload and stress levels to prevent ever reaching a point of complete mental and physical exhaustion.
Finally, the fifth point is to firmly reject the "hero lifestyle" of skipping rest. This is the common, misguided habit of trying to power through intense work periods by constantly sacrificing necessary sleep and rest days. The neurosurgeon advises against this trend, asserting that continuous rest and consistent recovery are not optional but are absolutely non-negotiable for achieving and maintaining sustained high performance and long-term brain health.
With different careers come different work expectations. Some jobs have routine day shifts with regular working hours, popularly known as the ‘9-5’. While other jobs require round-the-clock service. However, did you know what shifts you chose to do have an effect on your health as well?
Ranking the best to worst shifts, Dr Sudhir Kumar, a Hyderabad-based neurologist, recently made a post on his social media platform. He explained that the way you schedule your work shifts can have a major impact on your long-term health. The ideal work schedule is one that matches your body's natural clock. Below is a ranking of three common shift types, based on their effects on your health.
Working during the day perfectly matches your circadian rhythm, or internal clock. Your body is naturally built to be awake when it's light and rest when it's dark, allowing vital processes like hormone production and cell repair to function efficiently and keep your system stable.
Day shifts allow for quality, full sleep, which is crucial for long-term health. Workers face a lower risk of serious issues like obesity, diabetes, high blood pressure, and heart disease. This stable routine also lowers the risk of depression, anxiety, and certain cancers, making it the healthiest choice.
If night work is unavoidable, a consistent fixed night shift is superior to a constantly changing schedule. The benefit is that the body can establish a slightly more consistent sleep routine over time, allowing for a better partial adjustment to the reversed daytime sleep schedule than an erratic one.
However, stable night shifts still cause chronic misalignment with the natural day-night cycle. This leads to higher long-term risks of metabolic disorders, insulin resistance, and mood problems. Additionally, it disrupts social and family life, contributing to ongoing sleep deprivation and substantial health risks.
Constantly changing shifts are the most harmful because the internal clock cannot adapt to the varying schedule. This causes the maximum possible circadian rhythm disruption, confusing the body about when it should be awake, resting, or performing essential processes.
This chaotic schedule is linked to severe sleep issues and unhealthy fluctuations in stress hormones. This increases the risk of serious illnesses, including cardiovascular disease, diabetes, and mood disorders. Rapid shifts, like moving from night to morning duty, dangerously increase fatigue, raising the risk of accidents.
At the end of the post Dr Kumar reiterated that the best to worst working hours for your body.
While there are ways to manage your health around your working hours, it is important to make sure you give your body as much stability as possible. Make sure you speak to a healthcare professional and build a routine that will help your body maintain its level of functioning while also keeping your health in check.
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