What Is Type 3 Diabetes? Insulin Resistance In The Brain That Could Trigger Alzheimer’s

Updated Dec 3, 2024 | 06:13 PM IST

SummaryDid you know type 3 diabetes, linked to insulin resistance in the brain, is associated with Alzheimer’s disease? It highlights how metabolic disorders can affect memory, cognition, and brain health.
What Is Type 3 Diabetes? Insulin Resistance In The Brain That Could Trigger Alzheimer’s

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.

What is Type 3 Diabetes?

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.

Symptoms of Type 3 Diabetes

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.

Causes of Type 3 Diabetes

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:

1. Insulin Resistance

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.

2. Type 2 Diabetes

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.

3. Environmental and Lifestyle Factors

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.

Treatments for Type 3 Diabetes

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.

Can Type 3 Diabetes Be Prevented?

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.

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The High Cost of Ignoring Fungi: The Hidden Burden of Invasive Fungal Infections

Updated Jul 4, 2026 | 03:00 PM IST

SummaryNone of the infections begins dramatically. The early signs are a fever that does not settle with antibiotics, a cough without an obvious cause, and breathlessness that seems proportionate to the treatment but lingers too long.
The High Cost of Ignoring Fungi: The Hidden Burden of Invasive Fungal Infections

Credit: iStock

Advances in hematology, oncology, and blood and marrow transplantation (BMT) have transformed patient outcomes over the past two decades. However, alongside these achievements lies a persistent and often underappreciated threat—Invasive Fungal Infections (IFIs).

Despite significant improvements in diagnostics and antifungal therapies, IFIs continue to contribute substantially to morbidity, mortality, prolonged hospitalization, and healthcare costs among immunocompromised patients. Fungal infections in patients with blood cancers and blood disorders are neither rare nor unpredictable. And yet they continue to be diagnosed too late, too often.

What Happens To The Immune System During Treatment?

The treatments that have transformed the outlook for leukemia, lymphoma, myeloma, and serious bone marrow disorders are genuinely remarkable. Intensive chemotherapy, bone marrow transplantation, and the newer targeted therapies have extended and saved lives in ways that were not imaginable a generation ago. But each of them does something to the immune system that creates a serious risk.

Chemotherapy depletes neutrophils, the white blood cells specifically responsible for recognizing and destroying fungal organisms. A transplant requires conditioning that leaves patients with almost no immune defenses for an extended period. Prolonged neutropenia, mucosal barrier injury, corticosteroid exposure, graft-versus-host disease, and the increasing use of targeted therapies collectively create an environment where opportunistic fungal pathogens can thrive. Some of the most effective modern therapies in hematology work by modifying immune pathways, leaving patients vulnerable to fungal disease for months after treatment ends. This window can last weeks, sometimes much longer.

The Fungi That Exploit This Window

Aspergillus is a mould found in ordinary dust and soil. In most people, it causes no harm whatsoever. In a patient with severely depleted white blood cells, it can establish a lung infection that progresses faster than most people would expect and carries a mortality rate that remains unacceptably high even with treatment. The earlier it is identified, the better the outcome. But the gap between early and late diagnosis in this context is narrow and unforgiving.

Mucormycosis is less familiar to the public but arguably more aggressive. It invades blood vessel walls directly, cutting off blood supply to surrounding tissue. Patients with blood disorders who require repeated transfusions are at particular risk because excess iron in the body accelerates their growth significantly. India has the highest burden of this infection in the world. That statistic deserves more attention than it currently receives.

Candida lives in the gut of most healthy individuals without causing any problems. When the gut lining is damaged by chemotherapy, it can cross into the bloodstream and reach the liver, spleen, and other organs, causing infections that are difficult to detect and slow to resolve.

Delayed recognition frequently results in disease progression, leading to respiratory failure, disseminated infection, and poor outcomes.

The Problem Is Underdiagnoses

None of these infections begins dramatically. The early signs are a fever that does not settle with antibiotics, a cough without an obvious cause, and breathlessness that seems proportionate to the treatment but lingers too long. In

a patient already unwell from intensive therapy, these signs often get attributed to other causes. Time passes, and the infection progresses.

Specific blood tests can indicate a fungal diagnosis before imaging shows anything definitive. They are not available everywhere in India, and that gap costs lives. Apart from the economic burden of IFIs, it can disrupt cancer treatment schedules, delaying chemotherapy or transplantation and potentially compromising long-term disease control.

What Families Should Know

Preventive antifungal therapy for high-risk patients has strong evidence behind it. Centers that have built awareness of fungal infection risk into their standard care protocols consistently see better outcomes.

For families, the most important thing is simply knowing this risk exists. Asking about it is entirely reasonable. Expecting it to be actively managed is also reasonable. In hematology and oncology, the infections that go unrecognised are the ones that do most of the damage.

Invasive fungal infections are not merely infectious complications; they are major determinants of outcomes in modern hematology and oncology practice. Recognizing the hidden burden of IFIs is the first step toward reducing their impact and improving outcomes for our most vulnerable patients.

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Men Account For Nearly 3 Out Of 4 Suicides In India — Are We Ignoring A Growing Men's Mental Health Crisis?

Updated Jul 4, 2026 | 01:00 PM IST

SummaryIndia's suicide statistics state that close to three-quarters of the suicide deaths are among men. Despite the increasing prevalence of discussions on mental health, the issue of men's mental health is still neglected in most of these debates.
Men Account For Nearly 3 Out Of 4 Suicides In India — Are We Ignoring A Growing Men's Mental Health Crisis?

Credit: AI-generated image

Men have been taught for generations that they must be strong, that they are supposed to be self-sufficient, not to feel any impact, and to be emotionally strong when they face challenges.

Resilience is a good trait, but it may also make men feel disheartened about sharing their vulnerabilities or asking for assistance when they need it. Emotional distress can often be seen as a personal failure, rather than a health issue, as many grow up hearing "man up" or "be strong.”

Why Mental Health Crisis In Men Is On The Rise?

Meanwhile, there is still a high demand for men in society. Financial pressures, career expectations, family commitments, and social expectations can become a never-ending burden.

These factors can lead to feelings of loneliness, worry, and sadness, especially when combined with not having enough emotional release and wanting to turn to others for help.

Toxic Masculinity

Men are expected to be a part of the discussion, but not the central point of discussion when it comes to mental health. But the figures don't match. Almost three-fourths of the suicides in India are committed by men, which is a hidden and unaddressed issue.

One of the major issues is that there is a definition of masculinity in society. Boys are taught to be tough and independent from a young age and do not have to show feelings. The traits can both assist people in coping with difficulties and hinder them from admitting to emotional problems or seeking help when it is most necessary.

Read more: Doctors Day: From Burnout To Work Anxiety, The Mental Health Struggle Doctors Rarely Talk About

Lack Of Safe Space

A further issue is that there are not enough safe places in which men can express feelings without risk of condemnation. Stigma can be a barrier to seeking help even when there is help available. This can not only postpone treatment but also increase symptoms of loneliness and hopelessness.

The answer is more than just asking men to "speak up". We need to actively question and combat the stereotypes entrenched in society that equate vulnerability with weakness. Both families and workplaces, schools and communities all have a part to play in promoting emotional literacy and open dialogue amongst men.

Men may not be aware of or express emotional distress in traditional ways, which can be a big problem. Rather, symptoms can be manifested as irritability, withdrawal, substance abuse, or risk-taking behaviour, which can make it difficult for family members and friends to recognise when intervention is required.

It is not enough to raise awareness to solve this crisis. It is important to establish a space of normalisation for expressing emotions, to provide support for mental health and to make it part of the identity to seek help instead of looking weak. Promoting the mental health of men is not only an individual matter, but also a public health issue that can save lives.

For a genuine commitment to the prevention of suicide, mental health status of men needs to be a public health issue. Being sensitive to their challenges, to the idea of seeking assistance, and to establishing environments that are supportive of them can make the difference between life and death.

By Dr. Hamza Hussain, Head of the Department of Psychiatry and Mental Health at Ruby Hall Clinic and Bhavya Shah, Consultant Psychologist at Saifee Hospital, Mumbai

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Don't Ignore These Cancer Symptoms: Oncologist Shares The Early Warning Signs

Updated Jul 4, 2026 | 11:00 AM IST

SummaryCancer is often diagnosed late in India. Dr. Hasmukh Jain urges people to seek medical care for persistent symptoms lasting over two weeks to enable earlier detection.
Don't Ignore These Cancer Symptoms: Oncologist Shares The Early Warning Signs

Credits: Canva

Cancer cases are rising across India, but many patients still reach hospitals only after the disease has advanced. According to Dr. Hasmukh Jain, Professor of Medical Oncology at Tata Memorial Hospital, Mumbai, recognizing persistent warning signs and seeking timely medical care can make a critical difference.

Speaking about cancer awareness, Dr. Jain said, "Every year 15 lakh new cases of cancer are diagnosed in India. But the unfortunate thing is that most of these cases are diagnosed at an advanced stage."

He stressed that while cancer can present in many different ways, paying attention to your body's signals is one of the most important steps toward early diagnosis.

Persistent Symptoms Should Never Be Ignored

Dr. Jain explained that cancer often begins with symptoms that are common to many other illnesses, making them easy to dismiss. These may include:

  • Unusual or persistent fatigue
  • A cough lasting more than two weeks
  • Unexplained weight loss
  • Bleeding from the nose or other parts of the body
  • Fever lasting more than two weeks
Persistent pain that does not improve with rest

Although these symptoms may also occur due to infections or conditions such as tuberculosis, he advised against ignoring them.

"If the symptoms are persisting for more than two weeks, always seek medical attention," Dr. Jain said.

He added that many cancers can be detected through a physical examination, basic blood tests, and, when required, a biopsy.

Also Read: FSSAI Targets 6 Energy Drink Brands; Experts Link Them to Obesity, Liver Problems

Everyday Habits That Can Reduce Cancer Risk

Cancer cases are increasing at an alarming rate, both in India and globally. To combat this, embracing healthy lifestyle practices can significantly reduce the risk of this life-threatening disease.

Here are some of the everyday habits that one can follow to reduce the risk of cancer:

Maintain A Healthy Diet

Consuming a healthy and balanced diet rich in fruits, vegetables, whole grains, and lean proteins can reduce cancer risk. Berries, nuts, and green leafy vegetables contain many antioxidant properties that are useful in fighting oxidative stress-induced cancer. Cutting back and eliminating red and processed meat and sugar-containing drinks lowers the risk further.

Stay Physically Active

Regular physical activity keeps the individual body fit and reduces the risk of breast, colon, and endometrial cancers.

Avoid Tobacco And Cut Down On Alcohol Consumption

Among the factors that would be measured when determining preventable causes, tobacco use takes part as the first head in the index, associated with lung, throat, or mouth cancers. Similarly, alcohol consumption exposure is linked to many cancers, from hepatocellular to breast cancer. Moderation or abstinence is the key.

Protect Your Skin From The Sun

Skin cancer is one of the most preventable types of cancer. Applying sunscreen with high SPF, finding shade, and avoiding tanning beds would save you from harmful ultraviolet rays.

Get Regular Screenings

Most people, including men and women over the age of 40, should get routine screening through mammograms, Pap tests, and colonoscopy to enhance early detection, which can save lives.

Moreover, cancer prevention is a shared goal influenced by personal choices. Bringing small yet steady changes in daily habits can dramatically reduce cancer risk while enhancing quality of life.

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