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.

In today’s digital age, screens have become almost inseparable from daily life—even for very young children. While technology offers convenience and learning opportunities, increasing clinical observations have raised concerns about a phenomenon often referred to as “virtual autism." In an interview with Health and Me, Dr Aarti Javeri Manek, Paediatric Neurologist at Sir HN Reliance Foundation Hospital, explained what virtual autism is and the impact of screen time on children's brain health.

What is “virtual autism”?

Virtual autism is not a formally recognised medical diagnosis but rather a descriptive term used for children—typically toddlers—who exhibit autism-like features in the context of excessive screen exposure, particularly during critical periods of brain development. These children may show reduced eye contact, delayed speech, poor social interaction, and limited responsiveness to their environment.

Also Read: Cancer Is The 10th Leading Cause Of Death In Indian Children: Study

However, it is crucial to distinguish this entity from clinical Autism Spectrum Disorder (ASD). ASD is a neurodevelopmental condition, often with a strong underlying genetic and biological basis, present in addition to exogenous influences. External stimulus exposure may not even be apparent. In contrast, children with virtual autism often demonstrate significant improvement when screen time is reduced and replaced with real-world, interactive experiences. This reversibility is a key differentiating factor.

Read more: Is My Child Shy Or Autistic? Psychiatrist Shares Tips To Help Parents Spot Early Signs

What early signs should parents watch for?

From a neurological perspective, early childhood is a period of rapid synaptic growth, heavily influenced by sensory and social input. When screens replace human interaction, this can impact language acquisition, attention, and social interaction.

Some red flags that may suggest screen-related developmental delays include:

1. Limited or absent eye contact
2. Reduced response to name
3. Delayed speech or loss of previously acquired words
4. Preference for screens over people
5. Decreased or limited gestures (not pointing, showing, or sharing interest)
6. Repetitive behaviours such as watching the same videos excessively or viewing the same rhyme persistently
7. Irritability or meltdowns when screens are removed

While these signs overlap with autism, the context is important. A history of prolonged, unsupervised screen exposure, often exceeding 3–4 hours per day in toddlers, should prompt consideration of environmental impact.

Read more: Can Cell Therapy Be The Future Of Autism Treatment?

Are toddlers at greater risk compared to older children?

Yes, significantly so. The first three years of life are critical for brain development, particularly for language, social bonding, and emotional regulation. During this period, the brain relies heavily on serve-and-return interactions—a child babbles, a caregiver responds; a child points, and a parent names the object. These exchanges build neural circuits essential for communication and cognition.

Screens, even educational ones, are inherently passive. They do not adapt in real time to a child’s cues in the same way a human does. Excessive exposure during this sensitive window can therefore displace meaningful interactions, leading to significant developmental delays.

Older children, while not immune, are generally more resilient, as they have already established foundational social and language skills. However, excessive screen time in this group may still contribute to attention difficulties, behavioural issues, and reduced social engagement.

What can parents do?

The encouraging aspect of virtual autism is its potential reversibility if it is identified early. Reducing screen exposure, especially in children under 2 years, and reintroducing interactive play, storytelling, and face-to-face communication may lead to noticeable improvements. Ultimately, screens are tools and not substitutes for relationships. In early childhood, it is these relationships that shape the developing brain most profoundly.

For some people, getting inked is more than a passion—it is a form of self-expression. And tattoos are nothing short of an addiction; it is not easy to stop at one. Despite being a painful procedure that requires a great deal of caution—using fresh needles and safe ink, for instance—several incidents come to light where getting a tattoo goes wrong in irreversible ways. In a recent case, a man developed a weeping, black ulcer of dead flesh on his neck months after getting a tattoo. In this case, doctors blamed this reaction on the colour of the tattoo ink—it may have triggered inflammation that caused the skin to blacken and die.

A reaction from the tattoo ink

A 20-year-old man had a red cross tattoo on the base of his neck. After three months, it faded away spontaneously and was replaced by scars and bumps on either side of the neck, accompanied by a necrotic ulcer. In this case, when the tissue blackens and dies, it results in a painful wound. The unnamed man was hospitalised five months after getting his first tattoo. Doctors examining the patient found that the lymph nodes, which help fight infections, were swollen and hard. Doctors also examined a large crusted ulcer, which had spread across the base of the neck and had seeped into deeper layers of skin.

Read more: Tattoos May Increase Cancer Risk, Study Suggests

Doctors also performed an MRI and found large lumps around the ulcer that measured up to 5 cm. There were two blood clots in the jugular vein as well. Two biopsies were taken of the necrotic ulcer, but they did not reveal what may have triggered the necrosis. The team was then concerned about the scan results and how fast the patient's condition was progressing. He was then rushed into surgery, where doctors removed the ulcer along with masses on the neck. His neck was then reconstructed using fat from the thighs. The patient was then diagnosed with necrotising granulomatous lymphadenitis.

What is necrotising granulomatous lymphadenitis?

Necrotising granulomatous lymphadenitis is an inflammatory condition wherein the lymph node tissues die and form clumps of immune cells known as granulomas. This can develop in response to an injury, and in this case, doctors said that the tattoo was to blame.

Doctors said that heavy metals like cadmium and mercury in organic tattoo ink can result in an immune response. From surgery to recovery, the patient's case is published in the journal JAMA Otolaryngology. Experts say that this is only the second known case of necrosis after a tattoo.

What are the riskiest spots for a tattoo?

Getting a tattoo can be painful, but for some people, the pain is worth it. However, according to experts, there are some spots that are not ideal for getting a tattoo. These are:

1. Eyes—can lead to partial or complete blindness
2. Genitals – heightened risk of contracting sexually transmitted diseases and infections
3. Spine – a tattoo on the spine is extremely painful, and if it goes wrong, there could be irreversible repercussions

As winter transitions into warmer summer months, many people notice a sudden worsening of dandruff. During colder months, dandruff often appears as dry, fine flakes due to scalp dryness. However, as temperatures rise and humidity increases, dandruff can become oily and sticky because of increased sweating and sebum production. This seasonal shift highlights that dandruff is not limited to a particular time of year; rather, changes in climate can disrupt scalp balance and trigger flare-ups. Dr. Anupriya Goel, MBBS, MD, DPD (UK) – Dermatology, answered this for us.

Why does dandruff recur?

Many people struggle to understand why dandruff keeps recurring. It is often treated as a temporary cosmetic concern, but in reality, dandruff is a chronic scalp condition that requires consistent care and appropriate treatment. The primary cause of dandruff is a yeast called Malassezia globosa, which naturally resides on the scalp. This microorganism feeds on sebum (the natural oils produced by the scalp). As it breaks down these oils, it releases by-products that can irritate the scalp, leading to inflammation, itching, and visible flaking.

Seasonal factors further aggravate this process. In winter, cold air, low humidity, indoor heating, and frequent hot showers can strip the scalp of its natural moisture and weaken the skin barrier, resulting in dryness and flaking. In contrast, summer brings increased sweat and oil production. The combination of humidity, sweat, and sebum creates an ideal environment for Malassezia to multiply, which can worsen dandruff symptoms.

Read here: Simple Secrets To Establishing The Right Winter Hair Care Routine

What are the external factors responsible for dandruff?

Environmental factors such as pollution can also settle on the scalp and contribute to irritation. In addition, daily habits like wearing helmets for long hours, tying up damp hair, or not cleansing the scalp regularly can further disrupt scalp health. The transition period between seasons is often the most challenging, as the scalp has limited time to adapt to changing environmental conditions.

Because dandruff is often mistaken for a temporary issue, many people rely on occasional treatments or home remedies. However, effective management typically requires regular scalp-focused care using clinically proven active ingredients.

Treating dandruff

One such ingredient commonly used in anti-dandruff formulations is Piroctone Olamine, an antifungal agent that helps control the growth of Malassezia on the scalp. By reducing fungal proliferation, it helps address the underlying cause of dandruff and can assist in decreasing flaking, itching, and scalp irritation. It also helps cleanse the scalp by removing excess oil and buildup while being relatively gentle on the hair and scalp.

Read more: 7 Ayurvedic Hair Health Tips You Should Try For Healthy Locks

For optimal results, individuals experiencing recurrent dandruff may benefit from incorporating an anti-dandruff shampoo containing Piroctone Olamine into their regular hair care routine. Consistent use is important for maintaining scalp balance. During periods of increased sweating, such as in hot and humid weather, washing frequency may be increased as needed. Maintaining hygiene practices such as regularly cleaning helmets, pillowcases, and hair accessories can also help minimise recurrence.

In addition to controlling dandruff, well-formulated shampoos containing Piroctone Olamine are often combined with conditioning and moisturising ingredients that help maintain hair softness and scalp comfort while supporting long-term scalp balance.