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.
Lack of exercise can contribute to back pain. (Photo credit: AI generated)
Back pain is generally considered a problem seen in old age, but of late, we are increasingly seeing younger adults suffering from back pain. Prolonged sitting hours, inadequate physical activity, smoking, and an unhealthy lifestyle have made back pain a common complaint even in people under 30 years of age.
In an interview with Health and Me, Dr Pramod Sudarshan, Spine Surgeon (ortho), Apollo Hospitals, Bangalore, said, “Most commonly, we attribute this pain to a slipped disc or other disc-related conditions. However, they are just one among many reasons causing back pain. A thorough understanding of the other conditions that can lead to back pain, and knowing the ‘red flags’ to help identify them, will assist in seeking early treatment and preventing further complications.”
Muscle strain is considered to be one of the most common reasons for developing back pain in younger individuals. Daily activities like travelling for long hours, lifting heavy weights without proper technique, and carrying heavy backpacks can lead to muscle strain. Often, the pain due to muscle strain comes down with the help of medications such as muscle relaxants and rest.
Working professionals and students spend many hours a day studying, gaming, and working on computers without maintaining proper posture, leading to excess strain on the back muscles and, in turn, prolonged back pain. Having a properly ergonomically designed workstation/study table setup can prevent back discomfort and stiffness.
Lack of physical activity and associated conditions such as obesity weaken our core muscles, which are considered the main pillars supporting our spine. Weakened core muscles will not be able to perform the functions expected of them, leading to back pain. Regular exercise, weight management, a healthy diet, and guided weight training will help strengthen our core muscles and reduce the risk of back pain.
Other than muscles, the spine also contains small joints known as facet joints, irritation or inflammation of which can lead to back pain. A structure known as the pars interarticularis acts as a clamp in the spine, holding two adjacent vertebral bodies, and any defect, such as a congenital defect or fracture due to repetitive microtrauma, as seen in gymnasts, can lead to the slipping of one bone over the other, causing back pain.
Though mechanical back pain is most common, there are other conditions such as inflammatory arthropathy, tumours, and infections. Conditions such as ankylosing spondylitis, rheumatoid arthritis, and hyperuricemia/gout are some examples of inflammatory conditions in which an individual experiences early morning back pain associated with stiffness and may also present with pain in other joints.
Tuberculosis affecting the spine is considered the most common infection of the spine. Severe back pain, weight loss, loss of appetite, fever, and night sweats are some of the common symptoms. Other bacterial and fungal infections are also seen affecting the spine, most commonly in immunocompromised individuals.
Tumours, though rare in young individuals, warrant further investigation when symptoms such as severe weight loss, night pain, and prolonged back pain are present to rule out the possibility of tumours.
Other conditions such as scoliosis (congenital/adolescent idiopathic scoliosis), which is a three-dimensional deformity of the spine, can cause back pain. It requires further assessment in the form of radiological investigations to assess the degree of deformity and to plan any surgical intervention, if required, based on the severity of the curve.
Identifying some of the red-flag signs, such as weakness in the legs, numbness around the groin, bladder or bowel dysfunction, fever, unexplained significant weight loss, or severe pain following major trauma, is essential. These symptoms may indicate serious underlying pathology requiring medical care.
Fortunately, back pain in young people is largely preventable. Basic lifestyle modifications such as regular exercise, maintaining proper posture, avoiding prolonged sitting, maintaining a healthy body weight, undertaking monitored weight-training programmes, following a healthy diet, and getting adequate sleep will help prevent as well as overcome existing back problems. Invest in your spinal health at the earliest opportunity to reap the benefits in the second half of life.
Credit: AI generated image
Every year, millions of people undergo routine health check-ups that include a lipid profile. Yet for many, the numbers on the report—Low-Density Lipoprotein (LDL), High-Density Lipoprotein (HDL), triglycerides, and increasingly ApoB—remain confusing.
Most people know that cholesterol is linked to heart disease and that "good" cholesterol can be beneficial, while high levels of "bad" cholesterol may increase cardiovascular risk. However, understanding what the different lipid profile numbers mean—and which ones matter most—can make a significant difference to long-term heart health.
Taking to the social media platform X, noted neurologist Dr. Sudhir Kumar said, "This is mainly meant for people who have NOT suffered a heart attack or stroke and are NOT already taking statins."
Dr. Sudhir, Senior Consultant Neurologist at the Institute of Neurosciences, Apollo Hospitals, Hyderabad, shared that for most healthy adults, a lipid profile every two to three years is generally sufficient.
However, more frequent testing may be necessary for people with:
Also read: AHA’s New Dyslipidemia Guidelines Stress Early Screening, Lifestyle Management
LDL cholesterol, commonly known as LDL-C, is often referred to as "bad cholesterol." The expert explained its key role in the development of heart disease.
"Excess LDL can enter artery walls and contribute to plaque formation. Over time, these plaques may narrow blood vessels or rupture, increasing the risk of heart attacks and strokes," Dr. Sudhir said.
For most healthy adults, LDL levels below 100 mg/dL are considered desirable. Levels above this range gradually increase cardiovascular risk, particularly when elevated over many years.
The lower the LDL, the lower the long-term risk of heart attack and stroke. On the other hand, persistently high LDL can increase the lifetime risk of:
Triglycerides are another type of fat found in the bloodstream. High levels of triglycerides are often a marker of poor metabolic health, Dr. Sudhir said.
He added that high triglycerides can indicate:
High-density lipoprotein, or HDL, has long been known as "good cholesterol." Traditionally, higher HDL levels have been associated with lower cardiovascular risk.
However, recent research has challenged the idea that simply raising HDL improves heart health. Several medications designed to increase HDL levels failed to reduce heart attack risk, prompting a shift in focus toward lowering harmful cholesterol particles rather than boosting HDL alone.
As a result, the expert cautioned against judging cardiovascular health based solely on HDL levels.
Read More: Cardiovascular Diseases Lead As India’s Top Killer: US Cardiologist Points Out Risk Factors
One of the most important developments in cardiovascular prevention is the growing recognition of Apolipoprotein B, or ApoB. Dr. Sudhir stated that ApoB is a protein found on potentially harmful cholesterol-carrying particles such as LDL and VLDL (Very Low-Density Lipoprotein, a type of "bad" cholesterol).
"Think of ApoB as a count of the particles capable of entering artery walls and causing plaque. One ApoB is equal to one potentially harmful particle," the expert said.
ApoB is important because two people may have the same LDL level, but only one may have many more cholesterol-carrying particles. That person will often have a higher ApoB level and potentially higher cardiovascular risk. ApoB often provides a more accurate assessment of risk than LDL alone, the neurologist explained.
He suggested that ApoB testing should be considered by people with diabetes, prediabetes, metabolic syndrome, obesity, elevated triglycerides, or a strong family history of heart disease.
Credit: AI Generated Image
A recent research published in the Nature Medicine journal reveals that a new drug can help people on obesity shots to avoid unwanted muscle loss linked to flat bums or "Ozempic butt". The US research suggests that about a third of the weight loss from GLP-1 obesity jabs like Wegovy and Mounjaro can come from muscle rather than fat. The medication is apitegromab.
The trial with 102 adults, mostly women, who took apitegromab with their obesity medication, maintained more muscle while still losing fat, body scans showed.
The first thing to remember here is that Ozempic is a brand-name medicine that contains semaglutide as its active ingredient. Semglutide is the synthetic version of GLP-1, a natural hormone produced in the intestines that regulates blood sugar, appetite, and digestion. Now, every time you eat, your body produces various hormones, including GLP-1. These are called post-nutrition hormones, and they help you absorb the energy you just consumed.
Also Read: Salmonella Outbreak: Instant Noodles Sicken Over 80 In The UK, Europe
GLP-1 travels to your pancreas, prompting it to produce insulin. It also travels to the hypothalamus in your brain, which gives you the feeling of being full or satiated. Ozempic imitates this hormone, thereby silencing the food chatter in the brain. Interestingly, for some people, this food chatter is really quiet ( people with low appetite), and for others it is an outburst (people who generally binge eat). So with Ozempic, silencing this self-talk in the brain, people tend to lose their appetite and eventually weight.
However, it is important to note that losing weight includes not just fat but muscle as well. Losing too much muscle can lead to reduced strength and a shorter life span. Notably, records show that most people who start taking them stop them at 12 weeks; therefore, it is important for some but not for others.
Also Read: Ebola Outbreak Escalates: Uganda Rushes Medics To Congo Border Regions
Ozempic is a drug that is tasked to help diabetic patients manage their blood sugar levels and weight. However, recent research has shown its effectiveness in mitigating various addictions like alcohol and drugs by inhibiting hormones. But what people ignore are its side effects, which include:
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