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.
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As men step into their 50s and beyond, prostate health becomes an essential part of overall wellbeing. The gland naturally undergoes changes with age, many of which are not cancerous but can still cause discomfort, disrupt daily routines, and affect long-term health. Awareness, early screening, and preventive habits play a crucial role in staying ahead of potential problems.
One of the most common age-related concerns is benign prostate hyperplasia (BPH), a non-cancerous enlargement of the prostate. This happens due to hormonal shifts that cause the gland to grow slowly over time.
“Most men assume urinary symptoms are just a normal part of aging, but that mindset often delays treatment,” says Dr. Vineet Malhotra, Director and Founder, VNA Hospital. “BPH itself is not dangerous, but if ignored, it can seriously affect quality of life and even lead to complications.”
These symptoms often creep up gradually, making them easy to dismiss until they start interfering with sleep, work, or general comfort.
While BPH is not cancer, men must remain vigilant about prostate cancer, especially because its risk rises with age.
“Prostate cancer in early stages is usually silent,” explains Dr. Malhotra. “That is exactly why screening becomes so important once men cross 50.”
These tests help detect abnormalities long before symptoms appear. Early detection not only improves treatment outcomes but also prevents unnecessary anxiety or uncertainty.
Men should also stay alert for red-flag symptoms, including persistent pelvic pain, unexplained weight loss, blood in urine or semen, and sudden urinary changes.
Beyond medical screening, everyday habits have a strong influence on prostate wellbeing.
“A balanced diet, regular exercise, and maintaining a healthy weight can significantly reduce inflammation and support better prostate function.”
These choices not only support the prostate but also improve urinary health and hormonal balance.
Since stress can worsen urinary symptoms, incorporating yoga, meditation, or deep-breathing practices also makes a noticeable difference.
One of the biggest challenges is the reluctance many men feel when discussing urinary or sexual symptoms.
“Men often suffer quietly because these issues feel too personal,” says Dr. Malhotra. “But silence delays diagnosis and treatment. Open conversations can literally save lives.”
Families, caregivers, and partners can play a supportive role by encouraging early checkups and normalizing discussions around prostate health.
With rising life expectancy and a more active older population, prioritizing prostate health is no longer optional—it’s essential.
Early diagnosis, informed decision-making, and evidence-backed treatments give men the chance to maintain independence, comfort, and quality of life well into their later years.
As Dr. Malhotra puts it, “Prostate health is not just a medical concern—it’s a foundation for staying energetic, confident, and healthy as you age.”
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Crossing 40 often brings subtle but noticeable changes in how your body feels and functions. Many people brush off early signs like morning stiffness, reduced flexibility, or frequent bathroom visits, not realizing these are part of natural age-related changes. These shifts primarily affect the bones, joints, and urinary system, areas that quietly define everyday comfort.
According to Dr. Aashish Chaudhry, Managing Director & Head, Orthopedics & Joint Replacement, Aakash Healthcare, these changes are expected but shouldn’t be ignored. “After 40, the body’s regenerative capacity slows down, particularly in bones and joints. Being aware of these changes helps in early prevention and better long-term outcomes,” he says.
Bone density gradually declines with age due to hormonal changes. Women experience a drop in estrogen, and men see reduced testosterone levels—both crucial for supporting bone formation.
“Lower hormone levels weaken the natural bone-building cycle,” explains Dr. Chaudhry. “This increases the risk of fractures and even slows down healing when injuries occur.”
To counter this, weight-bearing exercises and strength training are crucial. A diet rich in calcium, vitamin D, and protein supports bone metabolism and maintains strength.
Years of repetitive movements, combined with declining collagen production, make joints more vulnerable. Cartilage becomes less elastic, leading to stiffness, reduced mobility, and the early onset of osteoarthritis.
“Many people notice joint pain but assume it's just fatigue,” says Dr. Chaudhry. “In reality, early joint wear can be detected and managed much earlier with the right interventions.”
Flexibility-focused exercises like yoga or stretching, along with anti-inflammatory foods such as leafy greens, berries, nuts, and omega-3 sources, can ease stiffness and protect long-term mobility.
While both men and women experience changes in urinary patterns, men often notice symptoms more prominently due to prostate enlargement. A bigger prostate narrows the urinary passage, causing:
Women, on the other hand, may struggle with pelvic floor weakness, leading to leakage or urgency.
Dr. Chaudhry notes, “These symptoms are common after 40, but they shouldn’t be normalized. Early evaluation can prevent chronic discomfort.”
Hydration remains essential. Cutting back on caffeine, alcohol, and salty foods can also lighten urinary symptoms and prevent kidney irritation.
Shifting from reactive to preventive care is key after 40. The goal isn’t to stop ageing—it's to age comfortably and confidently.
“Think of this stage as preparing your body for the next decades,” says Dr. Chaudhry. “With the right lifestyle adjustments, most people can maintain excellent mobility and function well into older age.”
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After the Thanksgiving, on Friday, the Food and Drug Administration (FDA)'s top vaccine regulator, Vinay Prasad made a clam that shocked the public-health established. "For the first time, the US FDA will acknowledge that COVID-19 vaccines have killed American children," he wrote in a leaked email to his staff, as reported by The Atlantic and The Washington Post.

The agency has identified that at least 10 children died after getting COVID shots.
The email has been perceived by physicians as a "threat". A response from 12 former FDA commissioners, published in The New England Journal of Medicine on Wednesday, called Prasad's memo "a threat to evidence-based vaccine policy and public health security". All of the potential vaccine related deaths reported to government were already reviewed by the agency's staff, and had reached "different conclusions", wrote the former commissioners.
Elsewhere, doctors and scientists have declared that there are no evidence that links COVID-19 vaccines to deaths in children. The commissioners have claimed that in an attempt to deliberately bring evidence, Prasad and his colleagues had engaged in an "evidence-manufacturing mission", a "dumpster dive" for shoddy data, or worse, a campaign of lying.
Prasad is one of several public health officials who, under Robert F. Kennedy Jr.’s leadership, have been steadily chipping away at public trust in vaccines. So far, he has not provided evidence to back his claims, and his estimate of vaccine-related deaths may be exaggerated. The memo’s intense language and focus on political complaints also cast doubt on his assertions.
However, something that cannot be ignored is that fact that his memo may have provoked people to deny even the possibility of COVID-vaccine-related deaths. The Atlantic notes that "the idea that mRNA-based shots have, tragically, killed a very small number of children is not far-fetched." The article written by Benjamin Mazer, a physician who specializes in pathology and laboratory, notes that the this does not imply a "catastrophic threat to public health" as tens of millions of doses of the same vaccines have saved young people.
Public-health experts agree that COVID vaccines, like all medical treatments, can cause side effects. Myocarditis, a rare heart inflammation seen mostly in adolescent boys and young men after mRNA shots, remains the most discussed risk. Although usually mild and far less severe than virus-induced myocarditis, a few deaths have been documented worldwide, including isolated cases in the U.S., South Korea, and two American teenagers described in a peer-reviewed report.
These findings fuel ongoing debate about whether extremely rare vaccine-related deaths are being overlooked. Some scientists, including Paul Offit and Michael Osterholm, say the evidence does not prove the vaccines caused these deaths, noting that population-level studies show no rise in mortality after vaccination. Others argue that well-investigated autopsy-confirmed cases should be taken seriously rather than dismissed outright.
Experts such as Krutika Kuppalli, as cited by Mazer, emphasize that even if deaths occur, they are so uncommon they do not appear statistically, while the benefits, significantly reduced COVID mortality, are unmistakable. However, individual cases still raise questions on health authorities and the stricter standards of proofs they have applied when vaccines were involved to create a room for skepticism.
The concern is that rare side effects of vaccines could go undiscovered and not that vaccinations are inherently harmful.
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