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.

Delhi-NCR is witnessing a sharp increase in seasonal influenza, with 1,777 confirmed H1N1 (swine flu) cases reported out of 2,392 total Influenza A cases.

According to data from the National Centre for Disease Control (NCDC), the corresponding period last year recorded just 229 H1N1 cases.

Several hospitals in the national capital have reported a significant increase in cases. However, so far there have been no reports of patients requiring ICU care or ventilator support.

“Delhi is fully prepared to deal with the present health situation. There is no shortage of beds, doctors, medicines or essential medical equipment, and every patient will receive timely and appropriate treatment,” health authorities said.

Is The H1N1 Surge Due To A New Strain?

The Indian Council of Medical Research (ICMR) has confirmed that the current surge is not due to a new strain of H1N1 and has advised people to follow precautions rather than panic, PTI reported.

According to the apex research body, the Influenza A (H1N1) viruses currently circulating in India belong to the A/Missouri/11/2025 (H1N1)pdm09-like virus strain.

“These viruses belong to clade 6B.1A.5a2a, subclade D.3.1.1, and have been in circulation since 2025,” the ICMR said. “Seasonal influenza, including H1N1, is mostly self-limiting,” it added.

Is The Current H1N1 Strain Covered By The Flu Vaccine?

The ICMR said the influenza strains currently circulating in India are well matched with the vaccine strains recommended for the Northern Hemisphere.

For both egg-based vaccines and cell culture-, recombinant protein- or nucleic acid-based vaccines, the World Health Organization (WHO) recommends an A/Missouri/11/2025 (H1N1)pdm09-like virus.

HealthandMe spoke to experts to understand whether people should consider getting a flu vaccine amid the current rise in H1N1 cases and who should prioritise vaccination.

Doctors stressed that annual influenza vaccination remains an important tool to reduce the risk of severe illness, complications and hospitalization, particularly among people at higher risk.

“Since the 2009 H1N1 pandemic, H1N1 is no longer given as a separate standalone vaccine. The H1N1 strain is included in the regular seasonal influenza vaccine, whether trivalent or quadrivalent. Therefore, getting the recommended annual flu vaccine also protects against H1N1,” Dr Tushar Tayal, Associate Director, Internal Medicine, CK Birla Hospital, Gurugram, told HealthandMe.

Who Should Prioritize Flu Vaccination?

The seasonal influenza vaccine is recommended every year for everyone aged six months and above. Doctors say vaccination is particularly important for:

• Pregnant women
• Older adults
• Young children
• Healthcare workers
• People with diabetes
• People with asthma
• People with heart disease

The Indian Medical Association (IMA) advises that the inactivated influenza vaccine can be given to the above high-risk groups.

“The live attenuated influenza vaccine (intranasal spray) can be given only to persons aged 2-49 years (not to pregnant females),” as per the IMA.

“The H1N1 flu vaccine is typically administered annually before flu season, around October, as a single intramuscular dose at clinics, pharmacies or hospitals,” Dr Atul Gogia, Head, Infectious Diseases, Sir Ganga Ram Hospital, New Delhi, told HealthandMe.

For most adults and children aged over nine years, one dose each year is sufficient. However, children aged six months to eight years who are receiving the flu vaccine for the first time may require two doses at least four weeks apart. After the initial vaccination, one annual dose is generally sufficient.

Should You Get The Flu Vaccine Now?

In India, influenza vaccination is ideally taken ahead of periods when flu activity tends to increase, particularly during the monsoon and winter months. The vaccine is available through hospitals, clinics and vaccination centers.

With H1N1 cases currently rising in Delhi-NCR, people who fall into high-risk groups may particularly benefit from discussing vaccination with their doctor.

Can The Flu Vaccine Prevent H1N1 Completely?

“While the shot drastically reduces hospitalizations and complications, its primary limitation is that it does not offer 100% protection against infection, nor does it cover non-influenza viruses. However, even if contracted, vaccination significantly softens the disease’s severity,” Dr Atul said.

Dr Tayal also explained that vaccine effectiveness can vary from season to season, depending on how well the vaccine strains match the influenza viruses circulating at the time.

Why Is Annual Flu Vaccination Needed?

According to Dr Tayal, annual vaccination can reduce the risk of severe influenza, complications, hospitalization and flu-related deaths. However, it does not provide complete protection against every respiratory infection.

The flu vaccine protects against influenza viruses, including H1N1, but does not prevent illnesses caused by other viruses or bacteria.

Along with annual vaccination, experts advised people to:

• Maintain good hand hygiene
• Follow respiratory etiquette, including covering the mouth and nose when coughing or sneezing
• Stay home when unwell
• Avoid close contact with others when experiencing flu-like symptoms

Higher education has changed far more than we often acknowledge. Universities are no longer simply places where students earn degrees. They are where young adults spend some of the most formative years of their lives, away from familiar support systems, making independent decisions, navigating uncertainty and, for many, encountering the first signs of a mental health condition. That quiet shift has expanded the role of educational institutions in ways that were never envisaged a decade ago.

The conversation around student wellbeing has evolved alongside this change. Mental health is no longer viewed as a subject to be discussed only after a crisis. Students are speaking more openly, parents are asking different questions, faculty members are becoming more aware and institutions are recognising that emotional wellbeing is closely linked to learning, participation and long term outcomes. This change deserves to be welcomed because it has helped move mental health from the margins of campus life to the centre of institutional responsibility.

Why A Counsellor Alone Is Not Enough?

Yet one assumption continues to shape much of this conversation. The presence of a counsellor is often seen as evidence that a campus is equipped to support student mental health. Counsellors remain indispensable and, for many students, they provide exactly the support that is needed. The challenge arises when counselling is expected to fulfil every role within a mental healthcare system.

Every effective healthcare system is built on layers of expertise. A physician does not replace a surgeon. A laboratory does not replace a diagnosis. Emergency care does not replace rehabilitation. Mental healthcare should be viewed no differently. Counselling is often the first point of contact, but the needs of students do not end there.

Some require structured therapy, others psychiatric evaluation, some ongoing clinical monitoring, and a few immediate crisis intervention. A mature campus mental healthcare system should be equipped to respond across this entire spectrum. The conversation should therefore move beyond whether campuses have counsellors to whether they have a system capable of supporting every stage of care.

Also read: Why People With Mental Health Conditions Are More Likely To Struggle With Tobacco Addiction

Building A Comprehensive Campus Mental Healthcare System

Encouragingly, public policy is beginning to recognise this changing reality. The University Grants Commission’s draft guidelines on mental health and wellbeing for higher educational institutions, with recommendations on counsellor ratios, dedicated wellbeing centres, round the clock helplines and mechanisms for early identification of distress, mark an important step in strengthening institutional support. More importantly, they open the door to a broader conversation on what comprehensive mental healthcare within higher education should look like over the coming years.

Building such a system requires looking beyond individual appointments. One of the most valuable lessons from developing healthcare services is that outcomes are rarely determined by the first consultation alone. They depend on how seamlessly care continues afterwards. If a counsellor recognises that a student needs specialised assessment, how quickly can that happen?

Also read: Lindsay Clancy Trial: What Postpartum Psychosis Really Looks Like, From A Survivor

If medication becomes necessary, is psychiatric care available without delay? If a student experiences a crisis outside campus hours, is there a clearly defined pathway to immediate support? If treatment begins, who ensures continuity during semester breaks or after the student returns home? These are not administrative questions. They are questions that shape recovery.

A comprehensive campus mental healthcare ecosystem should therefore bring together different levels of expertise rather than rely on one profession alone. Counsellors, clinical psychologists, psychiatrists, experienced mental health specialists and emergency support services each play a distinct role. Their contribution becomes most effective when they work as part of an integrated network with clear referral pathways, shared clinical responsibility and continuity of care that extends beyond the physical boundaries of the campus.

Prevention And Early Intervention Matter Too

Also read: Sugar Rationing In First 1,000 Days Linked To Lower Depression, Cancer Risk In Adulthood

Equally important is recognising that mental healthcare should not begin only after a student seeks help. Institutions have long understood the value of preventive healthcare through regular physical health assessments, vaccination drives and awareness programmes. Mental health deserves the same thoughtful approach.

Periodic, voluntary mental health check ins, appropriate screening, trained faculty and peer support networks, backed by specialist expertise, can help identify concerns early while respecting privacy, dignity and informed consent. Early recognition is not about labelling students. It is about ensuring that support reaches them before distress becomes disabling.

Technology can strengthen this ecosystem, but it cannot replace it. Digital consultations, secure follow up, coordinated records and access to specialists across locations can make care more continuous, particularly for students studying away from home. Their real value lies in connecting different parts of the system rather than functioning as isolated solutions.

Mental Healthcare As Part Of The Institutional Foundation

The quality of a university has traditionally been measured through its academic standards, faculty and research. Increasingly, it will also be measured by how well it supports the people who make learning possible. Mental healthcare deserves to be seen as part of that institutional foundation, not as an additional welfare service that sits alongside education.

The conversation has already moved beyond whether student mental health matters. The next step is to recognise that no single professional, however skilled, can meet every need that students may bring with them. Every campus needs more than a counsellor because every student deserves access to a mental healthcare system that is prepared not only to listen, but also to respond, support and care through every stage of that journey.

By Dr. Jothi Neeraja, Founder, Chairwoman and Managing Director, Maarga Mindcare

Anxiety and depression are major concerns in adulthood, but could nutrition during the earliest stages of life influence health decades later? Two new studies suggest that lower sugar exposure during the first 1,000 days of life may be associated with lower risks of anxiety, depression and even several cancers later in life.

The findings, from studies published in Translational Psychiatry and PNAS point to the potential long-term effects of early-life nutrition. However, the findings do not mean that restricting sugar in infancy directly prevents these diseases.

Sugar Rationing And Mental Health

A 2026 study led by researchers from the University of Surrey, UK, analyzed 46,448 people born between October 1951 and March 1956.

Participants were grouped according to how long they were exposed to sugar rationing: from in utero only to 24 months. People conceived after food rationing had ended served as the main comparison group.

Researchers also analyzed brain MRI data from 5,990 participants.

Lower Risk Of Anxiety And Depression

Compared with people conceived after rationing ended, those exposed to sugar rationing for the three longest periods had significantly lower hazards of both anxiety and depression.

• Shorter-exposure groups did not show significant differences.
• The associations were stronger in women.
• Adult sugar intake was broadly similar across groups, at about 58–59 g/day of free sugar and 122–124 g/day of total sugar.

When later-life sugar intake was considered, the association with anxiety persisted among those exposed throughout pregnancy and the first two years of life, while the association with depression weakened and was no longer statistically significant.

Further, MRI analysis found differences across rationing groups in 80 of 139 gray matter regions. Analysis identified 11 regions that differed from participants conceived immediately after rationing ended, including the brainstem, occipital fusiform gyrus and several cerebellar regions.

Sugar And Cancer Risk

A separate study published in PNAS examined whether sugar exposure during the first 1,000 days could influence cancer risk later in life.

Researchers from China Agricultural University and the University of Cambridge used the abrupt end of UK sugar rationing in September 1953 as a natural experiment. The analysis included 64,761 UK Biobank participants born between 1951 and 1956.

Compared with those whose first 1,000 days were not affected by rationing, participants exposed to rationing showed lower incidence of several cancers:

• Liver/intrahepatic bile duct cancer: 69% lower
• Prostate cancer: 52% lower
• Lung cancer: 41% lower
• Rectal cancer: 40% lower
• Breast cancer: 36% lower

The researchers identified two possible pathways behind the association.

How Could Early Sugar Exposure Matter?

• Long-term dietary habits: People exposed to rationing consumed less sugar, ate smaller quantities and had healthier, more diverse diets even five decades later, suggesting that early-life exposure may influence lasting food preferences.

• Biological ageing: The rationed groups had longer leukocyte telomeres, equivalent to about 2.2 fewer years of biological ageing, along with lower levels of Granzyme B, a marker linked to chronic immune activation.

Sugar's Link With Mental Health And Cancer

Sugar is an important source of energy for the brain, and very low blood glucose can impair brain function. However, excess sugar intake has also been associated with metabolic problems that can affect long-term health.

When it comes to cancer, sugar does not directly cause cancer, and cutting out all sugar does not “starve” cancer cells. Both healthy and cancer cells use glucose for energy.

However, consistently consuming excessive amounts of added sugar can contribute to weight gain and obesity, which are established risk factors for several cancers.