Imagine this. A young teenager, 17, years old, who is fully developed. Now imagine this, the same teenager has a fully developed extra set of limbs and a pelvis. That extra set of pair is attached with chest artery. But, how can this happen?

While it is extremely rare, and has a chance of less than one case occurring per 100,000 births. Such things do happen. This is called parasitic twin.

What Is A Parasitic Twin?

It is an extremely rare type of cojoined twin where a baby is born with an underdeveloped twin attached to its body. This condition is also known as vestigial twins. The condition is very closely related to conjoined twins, where babies are connected at birth and share organs. However, the main difference is that in conjoined twins, there are two developed babies, whereas in parasitic twins, only one is fully developed, other one is underdeveloped and non functional.

In such a case, the twin who is developed is medically known as the autositic or the dominant twin. The dominant twin is healthy in most aspect but may have extra tissue, organs, or limbs from the parasitic twin.

The parasitic twin may be attached with the dominant twin through several places. The common joints are at the head, torso, chest, pelvis, buttocks, or back. In these cases, the parasitic twin is not alive and they die either in the womb or during the childbirth.

Doctors Remove Parasitic Twin

Now, let's go back to the case we referred to, where a young teenager had an extra pair of limbs attached to chest. The teenager who has not been named is from Uttar Pradesh's Unnao neighbourhood, and was treated in AIIMS, Delhi. The team of doctors successfully removed the extra set of limbs from his body.

Dr Asuri Krishna, who led the team of specialist who surgically removed the extra limbs told the BBC that only 40 to 50 cases of parasitic twins have been documented in world medical literature, and in those cases, the surgery had been attempted on children. The doctor said that without much medical literature to guide them, the team of doctors depended on "intuition, skill and knowledge".

The doctor shared that the child had two fully formed legs, buttocks and external genitalia, which weighed around 15kg "protruding from his abdomen".

How Was The Surgery Performed?

The doctor shared that first they identified how interconnected the parasitic and host twins were. The doctors took scans and found that parasitic twin was attached to the teen's breastbone. The blood was being supplied from a vessel in his chest. However, "there wasn't much connection with other main organs like the liver or kidneys," said Dr Krishna. The team also found a large cyst in the teen's abdomen.

Then the surgery was performed in two stages. In the first stage, the parasitic twin was removed. Then the cystic mass was extracted from the surrounded area. The entire surgery was completed in two and a half hours and the team of doctors included radiologists, anaesthetists, and plastic surgeons.

The biggest challenge was when the teen's blood pressure dropped as 30 to 40% of his blood flowed to the parasitic twin, however, the doctors were prepared for it and they stabilized him.

A 27-year-old woman in US' state of Arizona suffered a cardiac arrest after using kratom, an over-the-counter supplement she purchased at a local gas station.

Amanda Goodsell, who had never taken kratom before, suffered a cardiac arrest after nearly a week of using the supplement and is now on life support, according to her family.

The mother of 3½-year-old twins tried the kratom gummies at the suggestion of her husband, Mike Goodsell, while seeking relief from persistent leg pain.

“Everybody knew what Kratom was. So I was like, well, okay, well, here, just take this. You could just buy it at the gas station. It’s not going to hurt you,” Mike Goodsell was quoted as saying to the media.

Nearly a week later, Mike found his wife unresponsive in their bed, and rushed her to the hospital, where she was placed on life support

“She like, was like red and her lips were blue, and she was foaming. So I like jumped out of bed. I grabbed her, and then (I) was trying to wake her up,” he said.

“They had to have her on a ventilator to help her breathe. And then they had to put her on a bunch of medications because her heart percentage was at 15%,” Mike added.

After spending two weeks in the hospital, Amanda Goodsell's condition began to improve. Although she has shown significant improvement, as per the doctors she will need a defibrillator and heart medication for the rest of her life.

Also read: Legionnaires' Disease Claims 5th Life In New York City: Health Officials

What Is Kratom?

Kratom is a plant-based substance derived from the Mitragyna speciosa tree, native to Southeast Asia. Traditionally used in countries such as Thailand and Malaysia for pain relief and increased energy, it has gained popularity in the US as an over-the-counter supplement.

Kratom is sold in multiple forms, including powders, capsules, teas, drinks and gummies.

Although it remains legal in many parts of the US, the Food and Drug Administration (FDA) has classified kratom as a "drug of concern" and has not approved it for any medical use.

According to the Substance Abuse and Mental Health Services Administration's National Survey on Drug Use and Health, an estimated 1.7 million Americans aged 12 and older used kratom in 2021.

The substance, sometimes referred to as "gas-station heroin," is banned in at least eight US states—Alabama, Arkansas, Connecticut, Indiana, Louisiana, Tennessee, Vermont and Wisconsin. Several other states, including Iowa and Idaho, are considering restrictions or outright bans.

Why Does The FDA Warn Against Kratom?

Read More: Hantavirus Claims 3 Lives In Venezuela: What The Rat-borne Virus Does To The Brain

According to a University of Virginia study, there were 43 hospitalizations linked solely to kratom in 2015. By 2025, that number had risen to 538. Researchers said the increase coincided with the emergence of highly concentrated synthetic products, including 7-OH.

The FDA has stated that kratom should not be used as a dietary supplement.

"Kratom is not appropriate for use as a dietary supplement. FDA has concluded from available information, including scientific data, that kratom is a new dietary ingredient for which there is inadequate information to provide reasonable assurance that such ingredient does not present a significant or unreasonable risk of illness or injury."

The agency has warned consumers not to use kratom because of the risk of serious adverse events, including liver toxicity, seizures and substance use disorder (SUD).

The FDA also notes that, in rare cases, deaths have been associated with kratom use, although these cases usually involved other drugs and the contribution of kratom remains unclear.

The agency is also aware of cases involving neonatal abstinence syndrome, in which newborns experienced withdrawal symptoms such as jitteriness, irritability and muscle stiffness following prolonged exposure to kratom during pregnancy.

When it comes to climate change, we often visualise melting glaciers, rising sea levels, raging wildfires, or record-breaking heatwaves. But scientists are increasingly warning that climate change could also be silently affecting one of the body's most vital organs: the brain.

From rising mercury levels and worsening air pollution to floods, wildfires, and hurricanes, climate-related catastrophes are exposing millions of people across the world to conditions that could increase the risk of neurological disorders.

On World Brain Day, let's look at why brain health is another reason to take climate change seriously.

Effect Of Heatwaves On Brain Health

This can lead to poor concentration, slower reflexes, memory decline, headaches, confusion, and poor decision-making.

Older adults are particularly vulnerable because the brain's ability to regulate body temperature declines with age.

People living with neurological disorders like dementia, Parkinson's disease, multiple sclerosis, or epilepsy may also find that their symptoms worsen during periods of intense heat.

Also read: Will Waterborne Diseases Rise In The Future? New Study Says Climate Change Could Be A Major Driver

Effect Of Air Pollution On Brain Health

Climate change is worsening air pollution in many parts of the world by increasing wildfire smoke, ground-level ozone, and fine particulate matter.

These tiny pollutants, especially PM2.5, are small enough to enter the bloodstream and may even reach the brain. Studies have linked long-term exposure to air pollution with:

• Faster cognitive decline
• Memory impairment
• Increased risk of dementia
• Higher risk of stroke
• Parkinson's disease
• Poor brain development in children

Scientists believe air pollution may trigger chronic inflammation and oxidative stress, both of which can damage brain cells over time.

Also read: Europe Heatwave Causes 10,000 Excess Deaths; England, Wales Record 2,700 More Fatalities

Effects Of Wildfires On Brain Health

While smoke affects the lungs, it can also impact the brain.

Wildfire smoke contains fine particles and toxic chemicals that have been associated with headaches, reduced attention, poorer cognitive performance, and increased emergency visits for neurological conditions.

People with existing neurological diseases may experience worsening symptoms during periods of heavy smoke exposure.

Also read: Dangerous Heat Dome To Grip Eastern US, Canada, Putting Over 220 Million Lives At Risk: How To Stay Safe

Extreme Weather Can Accelerate Brain Ageing

Climate change is also increasing the frequency and intensity of floods, hurricanes, droughts, and other natural disasters. Beyond physical injuries, these disasters can leave lasting effects on the brain and mental health. People affected by climate disasters often experience:

• Anxiety
• Depression
• Post-traumatic stress disorder (PTSD)
• Sleep disturbances
• Chronic stress

Children, older adults, and disaster survivors are among the groups most vulnerable to these long-term psychological effects.

How To Protect Your Brain?

While tackling climate change is a long-term strategic plan, individuals can maintain few self-care habits to reduce the risks. Experts recommend:

• Staying hydrated during heatwaves
• Avoiding outdoor activity during peak afternoon heat
• Monitoring local air quality before going outside
• Wearing a well-fitting mask during heavy wildfire smoke or severe pollution
• Keeping homes cool whenever possible

Brain health is often associated with old age, but according to neurologists, the foundation for healthy cognitive function is laid much earlier.

On World Brain Day, they warned that the 30s and 40s are a crucial period to protect the brain, as lifestyle habits and underlying health conditions can quietly affect memory, concentration, and overall cognitive health.

Brain Ages Alongside the Heart

Speaking to HealthandMe, Dr. Gurucharan Adoor, Neurologist, Apollo Hospitals Bannerghatta Road, Bengaluru, said brain health is closely linked to cardiovascular health. High blood pressure, high cholesterol, and elevated blood sugar can silently damage the brain years before noticeable symptoms appear.

His advice? Make preventive health checks a routine by monitoring blood pressure, blood glucose or HbA1c, cholesterol, weight, and waist circumference—especially for people with a family history of diabetes, stroke, or early heart disease.

Brain Fog A Warning Signal

Also read: Neurological Disorders Emerging As India's Next Major Public Health Challenge, Say Experts

Dr. Adoor said sleep is often the first thing people sacrifice during their busiest years, but the brain pays the price.

Irregular sleep schedules, untreated sleep apnea, and repeated nights of poor-quality sleep can lead to mental fatigue, difficulty concentrating, and persistent brain fog. If brain fog continues, he said, it should not be ignored, as it may indicate an underlying health issue that requires attention.

Dr. Bhushan Joshi, Consultant Neurologist, Manipal Hospital, Kharadi, Pune, told HealthandMe that he is "seeing more professionals in their 30s and 40s complaining of brain fog than ever before". According to him, hormonal changes and chronic inflammation are among the common but often overlooked causes.

Hormonal Changes Can Affect Cognitive Function

Dr. Joshi noted that hormonal fluctuations can significantly influence brain function. Women entering perimenopause may experience difficulty concentrating, while others may notice "word retrieval and short-term memory due to changing estrogen levels that influence brain function."

He added that it is not limited to women. Men also undergo age-related hormonal changes that can affect energy levels and cognitive performance. While these changes are often temporary, they can still be distressing.

Read More: Aspartame, Saccharin, Erythritol Linked To Faster Brain Ageing: Study

Chronic Inflammation May Reduce Mental Clarity

Dr. Joshi explained that chronic low-grade inflammation can also contribute to brain fog. Conditions such as obesity, diabetes, autoimmune diseases, and persistent infections can trigger inflammatory responses that interfere with the brain's ability to process information efficiently. In some people, inflammation has been linked to reduced attention, poor memory, and diminished mental clarity.

Small Lifestyle Changes Key

The good news: Simple daily habits can support long-term brain health. Regular physical activity—whether it's walking, cycling, dancing, or strength training several times a week—improves blood flow to the brain, boosts mood, and supports healthy ageing.

Dr. Adoor also recommends limiting unnecessary screen time, taking regular breaks from phones and digital devices, and focusing on one task at a time to reduce mental overload.

When Should You See A Doctor?

Occasionally feeling mentally sluggish is common, but worsening memory problems or cognitive changes that begin interfering with work or daily life should not be ignored, Dr. Joshi said.

He added that these symptoms may stem from treatable conditions such as thyroid disorders, vitamin deficiencies, anxiety, or depression, making timely medical evaluation important.