Weight loss is usually considered a good thing, unexpected and extreme weight loss can be a sign of something in your body going very wrong. There could be some underlying issues that are causing your body to pull weight and nutrition from your muscles and body fat to keep you going. As you grow old, your limbs grow weaker, and same for your muscles, so you do lose some weight as you age, but losing a lot of it too quickly could be a sign of something much worse, Dementia. A recent study published in JAMA Network Open 2025 Cardiometabolic Trajectories Preceding Dementia in Community-Dwelling Older Individuals, has identified potential early indicators of dementia, including significant weight loss and specific digestive changes, appearing years before noticeable cognitive decline.

The study showed that people who later got dementia had their Body Mass Index, or BMI, go down faster than those who stayed healthy. BMI is a way to see if someone's weight is healthy for their height. This drop in BMI started happening many years before they were told they had dementia, sometimes as early as 11 years ago. Also, these people often started with a lower BMI to begin with. So, even though everyone's weight might change a little as they get older, the people who developed dementia had a much bigger and faster weight loss.

What Are Some Other Indicators Of Dementia?

Along with their BMI, the size of their waist also changed. People who ended up with dementia had smaller waist sizes, and this difference was noticeable about 10 years before they were diagnosed. This means that their bodies were changing in ways that showed up long before they or their doctors noticed any problems. So, not only was there weight loss, but also a loss of abdominal fat. This measurement is important because fat around the waist can be related to other health issues.

The study also found changes in their blood. Specifically, the "good" cholesterol, called HDL, went up in people who developed dementia. This increase happened about five years before they were diagnosed. It's tricky because HDL is usually seen as a good thing for your heart. But in this case, it seems like it might be a sign of changes happening in the brain. Scientists are still trying to understand why this happens.

Weight Loss Doesn’t Cause Dementia, Dementia Causes Weight Loss

When we see that people with dementia lose weight, it's easy to think that the weight loss is what caused dementia. But experts think it's the other way around. They call this "reverse causation." This means that the brain changes that cause dementia also cause people to lose weight. The brain changes can affect things like appetite, how the body uses food, and how people go about their daily lives. For example, people might forget to eat, have trouble making meals, or move around less.

While the study revealed a lot about different indicators of dementia and bodily changes, there are many limitations to the study. Everyone loses some weight as they get older. So, it's hard to know when weight loss is just a normal part of aging and when it's a sign of dementia. The study found that people with dementia lost weight faster, but it's still tricky to tell the difference in everyday life. Doctors need to look at other things, like memory tests, to figure out if someone's weight loss is a cause for concern.

If someone is losing weight without trying, and they're also having problems with their memory or thinking, it's important to talk to a doctor. It's not just about the weight loss; it's about the whole picture.

Blood disorders are often misunderstood; many people think that all serious blood-related conditions are a form of cancer. This misunderstanding is particularly common when it comes to sickle cell disease. Both sickle cell disease and blood cancers affect blood cells and can lead to significant health complications, but they are fundamentally different, with distinct causes, treatment approaches, and long-term outcomes. Understanding these differences is important not only for patients and their families but also for awareness and ensuring timely medical care.

Sickle cell disease is an inherited genetic disorder that develops in a person who inherits abnormal hemoglobin genes from both parents. Hemoglobin is the protein in red blood cells responsible for carrying oxygen throughout the body. People with sickle cell disease have red blood cells that become rigid and crescent or "sickle" shaped instead of their normal round structure. These abnormal cells can block blood vessels, reduce oxygen delivery to tissues, and break down more rapidly than healthy red blood cells. As a result, patients may experience chronic anemia, episodes of severe pain, recurrent infections, organ damage, and other complications.

How Blood Cancers Differ From Sickle Cell Disease

Blood cancers are cancers that originate in the blood-forming tissues, such as the bone marrow and lymphatic system. The most common types include leukemia, lymphoma, and multiple myeloma. Unlike sickle cell disease, blood cancers are generally not inherited and are caused by DNA mutations that occur during a person's lifetime. These mutations cause abnormal blood cells to grow, crowding out healthy cells and interfering with the body's ability to fight infections, carry oxygen, or control bleeding.

The two conditions are different, but some symptoms may overlap. For instance, tiredness, weakness, recurrent infections, and anemia can occur in both sickle cell disease and certain blood cancers. However, the underlying reasons are entirely different. In sickle cell disease, symptoms arise because of abnormal hemoglobin and sickling of red blood cells. In blood cancers, symptoms result from the uncontrolled growth of malignant cells within the bone marrow or lymphatic system.

Difference in Diagnosis And Treatment

Diagnoses for both diseases differ. Sickle cell disease is usually identified through specialized blood tests that detect abnormal hemoglobin. In many cases, it can be diagnosed early in childhood. Blood cancers require a combination of blood investigations, bone marrow examinations, imaging studies, and specialized laboratory tests to establish the diagnosis and determine the specific cancer subtype.

The treatment approaches for these disorders reflect these differences. Management of sickle cell disease focuses on preventing complications, controlling symptoms, reducing pain crises, preventing infections, and improving quality of life. Certain patients may benefit from advanced therapies, including stem cell transplantation and emerging gene-based treatments.

Why Awareness Matters

Blood cancer treatment depends on the type and stage of disease and may require chemotherapy, targeted therapy, immunotherapy, stem cell transplantation, radiation therapy, or newer cellular therapies such as CAR-T cell therapy. The treatment plan is individual-based, depending on factors such as the specific cancer subtype, disease burden, patient age, pre-existing conditions, and overall health.

While medical advances are transforming outcomes for both conditions, improved screening infrastructure and programs, better care, advances in transplantation, targeted therapies and innovative cellular treatments are helping patients live longer and healthier than ever before. That said, awareness remains the first step towards better outcomes. Knowing the differences between sickle cell disease and blood cancers can help reduce confusion, support early diagnosis, and timely intervention.

(By Dr. Narendra Agrawal, Sr. Consultant – Hemato Oncology & Bone Marrow Transplant, Rajiv Gandhi Cancer Institute & Research Centre (RGCIRC), New Delhi)

GLP-1 drugs like Ozempic, Mounjaro, and Wegovy may not only aid weight loss and improve diabetes control but could also help men with obesity improve their fertility, according to new research.

Obesity is a well-established risk factor for infertility in both men and women. The findings, presented at ENDO 2026, the Endocrine Society's annual meeting in Chicago, suggest that GLP-1 medications do not harm male hormones or fertility, even with long-term use.

Researchers from the University Hospitals Coventry and Warwickshire and Warwick Medical School in the UK found that GLP-1 drugs may improve testosterone levels and sperm quality in men with obesity-related low testosterone while addressing the underlying metabolic effects of obesity.

"This work supports a shift away from prescribing testosterone replacement in men with obesity and low testosterone and toward treating the underlying cause—excess weight and poor metabolic health—which can naturally restore hormone levels and preserve fertility," said lead researcher and endocrinologist Pratibha Natesh of Warwick Medical School.

What Did The Study Find?

Also read: Ozempic-Like Weight-Loss Drugs May Cut Breast Cancer Risk By A Third, Finds Research

The researchers analyzed published randomized controlled trials comparing GLP-1 medications with either placebo or other treatments in men aged 18 to 65 years.

The review focused primarily on changes in testosterone and other hormones involved in testicular function. Researchers also evaluated sperm quality, body weight, blood sugar levels, cholesterol, and overall metabolic health.

To minimize bias, two independent reviewers assessed the studies, with five clinical trials meeting the eligibility criteria.

Overall, the findings showed that GLP-1 drugs had no negative impact on reproductive hormones, sexual function, or sperm quality.

For instance, a 24-week study of semaglutide found improvements in sperm morphology and cholesterol levels while maintaining stable testosterone and hormone levels.

Another 16-week study of liraglutide in men with obesity-related low testosterone showed increases in testosterone and associated reproductive hormones. Participants also experienced better overall health outcomes compared with those receiving testosterone replacement therapy alone.

More Research Needed

Read More: Mayim Bialik Says Just One GLP-1 Shot Triggered ‘Nightmare’ Side Effects

Despite the encouraging findings, Natesh cautioned that the number of available studies remains small and results vary across trials. Larger, well-designed studies are needed to better understand the effects of GLP-1 drugs on male fertility.

She also emphasized that most of the reproductive benefits observed are likely indirect and that GLP-1 medications have not been evaluated as treatments for male infertility or hypogonadism.

Nevertheless, the researchers hope the findings will help patients and physicians make more informed decisions about GLP-1 medications used for weight management and diabetes treatment.

"Improving metabolic health can have positive effects far beyond weight alone," Natesh said.

What Are GLP-1 Drugs

GLP-1 receptor agonists are medications to control high blood sugar in people with type 2 diabetes.

These therapies help by:

• Increasing insulin release when blood sugar rises
• Delaying stomach emptying
• Reducing appetite
• Decreasing glucagon production
• Improving weight loss

Dr. Uthra, a diabetologist and Sr. consultant at Dr.Mohan’s Diabetes Speciality Centre, in Chennai, told HealthandMe that while GLP-1 therapies help control blood sugar, beyond this, these treatment regimens provide many more benefits.

Research shows that these medications can reduce the risk of major cardiovascular events such as heart attack and stroke.

In addition, GLP-1 therapies help in weight reduction. Obesity is also linked to diabetes and heart disease. Hence, GLP-1 therapies help to reduce weight and the risk of developing heart diseases, the expert said.

Déjà Vu is a feeling of sensation when one person feels that they have felt or witnessed the same situation before, just like a single incident is happening once again. The word itself is from French and means "already seen." Though there is a common misconception among people that Déjà Vu is a very rare occurrence, in reality, this apparently mysterious experience happens to almost 97 percent of people's lives. Thus, it is a very common thing that will be felt by most people at least once in their lifetime.

What Is Déjà Vu?

As mentioned before, the word itself shows the very aspect of Déjà Vu that it's already seen. Suppose you are having a deep conversation with your friend, family, or a stranger, but you feel like this is not the first time you are having this conversation; you already know the topics and outcomes, as if you are living the same moment that you have lived before.

On the other hand, you might be visiting a new place, maybe a new city that you have never visited, but the places, houses, and overall atmosphere feel very recognizable. You suddenly feel that you have visited that place before and have felt good or bad in the past, as if you are living a past in your present.

All in all, this kind of strange phenomenon that happens to people regularly, this kind of uncomfortable feeling which is felt by 97 percent of people in the world, is called Déjà Vu.

What Causes Déjà Vu?

The root cause of this strange phenomenon is believed to be a result that one place or any conversation or any situation is resembling the same kind of pattern or feelings that you have experienced and felt before, and in most cases, you yourself have forgotten that, but your brain has not, and it recreates this sense of familiarity, and you feel you are living in a paradox.

In other words, déjà vu occurs when two parts of your brain fail to communicate properly: the temporal lobe, which handles memories, and the hippocampus, which processes new experiences.

There are certain things that can cause Déjà Vu more than others, such as fatigue or sleep deprivation, stress, and anxiety, which can trigger the feeling of Déjà Vu, as this pressure on your mental and physical health might pressure your brain and distort the recognition process. Other than that, migraine, dementia, and seizure can also cause Déjà Vu in a person.

Occasional déjà vu is generally harmless and not a cause for concern. However, if it happens frequently, lasts more than a few seconds, or is accompanied by other symptoms, it may be a good idea to seek medical advice.