Mosquitoes are a big part of the ecosystem, but often are a nuisance as they bite and feed off of us. Their bites cause itchy red bumps and spread infections and allergies in our bodies. But have you ever wondered why they bite certain people more than others? While some people are plagued by mosquito bites, others barely notice them. Here are some interesting facts about mosquitoes that you must know about!

1. Carbon Dioxide:

Mosquitoes are attracted to a certain smell that emits from the human body that is present in the human skin and sweat, mosquitoes can sense the carbon dioxide or CO2 we breathe out. The more active you are, the more CO2 you emit and the more mosquitoes will be attracted to you. Researchers are still investigating the cause of the variation of body odour that brings them to you, possibly genetics or certain bacteria. The unique combination of sweat and skin bacteria creates a scent that mosquitoes find irresistible. Some chemicals in sweat, like lactic acid and ammonia, are especially attractive to them.

2. Colours

While the reason isn't fully understood, mosquitoes seem to be drawn to dark colours like black more than lighter ones. So, ditch the dark outfit next time you're in mosquito territory. It has been noted that mosquitoes are more likely to leave lighter colours alone.

3. Heat and Vapour

Mosquitoes can detect your body's heat and water vapour, acting like a beacon guiding them right to you. So next time you're feeling sweaty, be aware you might be attracting a lot of mosquitoes. If you are working out or doing something that is making you sweat and your body heat rise, the mosquitoes nearby will be instantly attracted to you. Even mosquitoes are careful about who they pick as a host, some studies even suggest that they like a certain body temperature to feed off of.

An interesting fact about mosquitoes is that they can learn to like a host. They have their own preferences and if they meet a certain person who fits their criteria they might be the next host they move onto. In an older study, it showed that 20 per cent of people with mosquito-borne diseases accounted for 80 per cent of diseases transmitted in the population. They suggest that they only bite a certain set of people within the population.

4. Other factors:

Studies suggest mosquitoes might learn to prefer certain people based on things like what you've been drinking. In a 2002 study, there could be many reasons they like alcohol to making your body temperature high etc. Even pregnant women seem to be extra attractive to them due to higher body temperature and CO2 output.

A two-year-old boy from Bristol, UK has died from a rare heart disease, known to mostly affect children with only flu-like symptoms, on January 8.

Hudson Martin had been diagnosed with Kawasaki disease when he was seven months old and was placed on lifelong medication including aspirin and blood thinners to reduce the risk of clots. Since then, he had been living a normal and happy life, according to father Damien Martin.

He told Bristol Live: "You’d never know anything was wrong from pictures or videos. He bounced off everything. He loved climbing, dancing, music, he was a proper daredevil."

But days before his third birthday, he suddenly collapsed while playing at home. Despite being given CPR by paramedics for an hour, his heart did not restart and he passed away.

“They did absolutely everything they could,” Damien said. "His heart just wouldn't come back."

What Is Kawasaki Disease?

Also known as mucocutaneous lymph node syndrome, Kawasaki disease causes inflammation in the walls of small to medium-sized blood vessels that carry blood throughout the body which can damage to the heart and blood vessels, mostly in children younger than five years old.

When this happens, the heart doesn't work as well to pump blood to the body and could burst (coronary artery dilation and aneurysms). It also causes swelling in the lymph nodes and mucous membranes inside the mouth, nose, eyes and throat.

Apart from a 102.2 degrees Fahrenheit (39 degrees Celsius) fever that can last for five days, children with Kawasaki may also experience some or all of the following symptoms:

• Rash on the main part of the body or in the genital area
• Swelling and redness of their hands and feet
• Irritation and redness of the whites of their eyes
• Swollen lymph glands in the neck
• Irritation and inflammation of the mouth, lips, and throat

It remains unknown what causes Kawasaki disease in children and if it affects adults.

Diagnosis involves ruling out other diseases that cause the same symptoms which include:

• Scarlet fever
• Juvenile rheumatoid arthritis
• Stevens-Johnson syndrome (a disorder of the mucous membranes)
• Toxic shock syndrome
• Measles
• Some illnesses caused by ticks, such as Rocky Mountain spotted fever

Is It Curable?

While this non-contagious disease can be treated with a mixture of antibodies given through the veins (intravenous immunoglobulin) and aspirin, it remains uncurable. Doctors may also advice steroids if intravenous immunoglobulin is not effective.

After receiving treatment for Kawasaki disease, most children recover fully and long-term follow-up care remains unnecessary. However, children who have suffered through aneurysms or other complications related to the disease will need lifelong monitoring with a cardiologist.

England is recording higher-than-normal scabies infections this winter. Health authorities have cautioned that the condition, caused by microscopic mites known as Sarcoptes scabiei that tunnel into the skin, spreads quickly through close physical contact and often leads to severe itching and irritation. Data from the Royal College of General Practitioners’ Research and Surveillance Centre shows scabies is circulating more widely than usual in England, with cases increasing through the autumn and winter months.

Also Read: Doctor Explains Why Weight Loss Drugs Like Ozempic Are Truly A Medical Breakthrough

Scabies UK: What Is Scabies?

Scabies is caused by the Sarcoptes scabiei mite. These tiny parasites burrow beneath the skin where they survive, feed and lay eggs. The presence of the mites triggers an allergic reaction in the skin, resulting in an itchy rash. Scabies passes easily from one person to another, particularly among people living in close quarters.

If one member of a household is infected, doctors usually advise checking and treating other family members and close contacts at the same time, according to the Cleveland Clinic.

Scabies UK: What Are The Early Symptoms Of Scabies?

Early signs of scabies include intense itching, which is often worse at night, along with a pimple-like rash, small blisters, and thin, irregular lines on the skin known as burrows. These symptoms commonly appear between the fingers, on the wrists, elbows, armpits, waist and genitals. According to the National Health Service, these reactions occur due to the body’s response to the mites and their eggs beneath the skin.

Symptoms do not usually appear straight away and may take three to six weeks after the initial infection to develop. However, people who have had scabies before may notice symptoms within a few days. Typical signs include severe night-time itching and small bumps, blisters or burrow-like tracks on areas such as the hands, wrists, elbows, nipples, genitals and waist.

In more severe cases, the skin may become thickened, rough and scaly. Among children and older adults, scabies can also affect the scalp, face or the soles of the feet.

Scabies UK: Are There Different Types Of Scabies?

Yes, scabies exists in several forms beyond the classic type. These include:

• Crusted (Norwegian): This form is more likely to affect people with weakened immune systems. It causes thick crusts over large areas of skin and can involve millions of mites, compared with the 10 to 15 mites typically found in classic scabies.
• Nodular: More commonly seen in children, this type affects areas such as the genitals, groin or armpits. Firm, raised lumps may persist even after the mites have been eliminated.

Scabies UK: How Is Scabies Treated?

Scabies is usually treated successfully with prescribed medicated creams and lotions called scabicides, along with careful hygiene measures. To avoid reinfection, clothes, bedding and towels should be washed at high temperatures and tumble-dried or ironed. Items that cannot be washed should be sealed in a bag for at least three days, as the mites cannot survive without contact with human skin.

Professor Michael Marks, a professor of medicine at the London School of Hygiene and Tropical Medicine and former chair of the International Alliance for the Control of Scabies, said the rise in cases may be linked to delays in accessing medical care and gaps in identifying and treating close contacts, which can allow the infection to continue spreading.

Ozempic, Mounjaro, Wegovy, and many more such popular weight loss drugs are now making headlines. They are also dominating social media, dinner table conversation and many more. But, is Ozempic truly a medical breakthrough, a miracle drug? Dr Shubham Vatsya, a gastroenterologist, and hepatologist at Fortis Vasant Kunj explains how did this drug change the weight loss struggle that many people face.

Why Is GLP-1 Drug A Medical Breakthrough?

Dr Vatsya explains that it took 20 years of research for scientists to come up with these medicines. This drug underwent proper lengthy trials, and have been approved by the US Food and Drug Administration (FDA), "which is not obtained by giving any bribe".

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He also noted that when a person is not able to lose weight, Ozempic and drugs alike give a "head start" to them, along with a hope.

Talking about side effects, he says that every drug has its side effects, this is where a doctor's role comes in.

"Now, the person who is not able to lose weight, if you tell him 'you hit 100 kg bench press', he will break his shoulder. He needs a kickstart somewhere. This is what weight loss drugs allow," he says.

He also points out that the scientists who made GLP-1 agonists got a Nobel Prize, which "cannot be a scam". This is what makes weight loss drugs truly different.

What Are GLP-1 Drugs?

GLP-1 Drugs stand for Glucagon-like peptide 1, a naturally occurring hormones that helps regulate blood sugar and appetite after eating. It was first identified almost 50 years ago and scientists have since uncovered its role in type 2 diabetes.

Almost two decades of research went behind it that led to the development of GLP-1 agonists. It was in 2005, when the first GLP-1 medication, exenatide was approved.

Read: Could You Become Addicted To Your Weight Loss Drugs?

These medications have three main functions:

• Stimulating the pancreas to release insulin
• Slow the transit of food in the stomach to help people feel fuller for longer after a meal
• Act on areas of the brain that regulates hunger and fullness, leading to smaller portion sizes and reducing cravings

Popular drugs like Ozempic and Wgovy, which have semaglutide, which is a GLP-1 receptor agonist, or tirzepatide found in Zepbound and Mounjaro are FDA-approved for type 2 diabetes and weight loss.

These drugs work by binding GLP-1 receptors in the body, which in return increase insulin production in response to food intake and suppress glucagon, a hormones that raises blood sugar.

Also Read: How Weight Loss Drugs Change Ones Relationship With Food?

Are The Popular Weight Loss Drugs Addictive?

There is currently no data suggesting that GLP-1 medications cause physiological addiction. Interestingly, some research suggests they may even reduce cravings related to alcohol or opioid use. That directly contradicts the idea that these drugs hijack the brain’s reward system in a traditional addictive way.

Still, wanting or feeling unable to stop a medication because of fear of weight regain or loss of control is very real. That experience should not be dismissed, even if it is not addiction in the clinical sense.

These medications are meant to support long-term habit change, not replace it. Nutrition, movement, sleep, and a healthier relationship with food are meant to develop alongside the medication. When people reach their goal weight, doctors may suggest tapering the dose slowly or moving to a lower maintenance schedule rather than stopping abruptly.

Stopping suddenly can make hunger feel overwhelming. A gradual transition allows the body and mind time to adjust. Some people do successfully maintain weight loss without the medication, but it usually requires strong lifestyle foundations first.