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.

Glaucoma is an umbrella term for a group of eye diseases that create pressure inside your eyeball, which can damage delicate, critical parts at the back of your eye, including the optic nerve.

While most of the diseases are progressive, meaning they gradually get worse and eventually cause permanent vision loss and blindness. In fact, glaucoma is the second-leading cause of blindness worldwide and is the leading cause of blindness for people over 60 years old.

Dr Niteen Dedhia, Medical Director, Ojas Maxivision Eye Hospital tells Business Standard: "Glaucoma slowly and quietly causes damage to the optic nerve. Changes in eye pressure, blood flow and nerve fibres occur over time, while the brain often compensates for the loss.

"As a result, symptoms go unnoticed, and by the time vision loss becomes apparent, the damage is usually permanent."

Many forms of glaucoma have no warning signs and the effect is extremely gradual, to the point that you may not notice a change in vision until the condition is in its late stages.

Here are some symptoms that mid-age people need to keep an eye out for:

1. Gradual loss of circumferential vision

One of the earliest symptoms of glaucoma is damage and subsequent loss of peripheral vision. Dr Dedhia noted: “Glaucoma starts by damaging the peripheral vision but doesn’t affect the centre (front) vision."

If you seem to struggle with spotting objects approaching from the side or bump into things more often, you may be experiencing early stages of the disease and not merely experiencing normal ageing.

2. Difficulty seeing or reading in the dark or low light settings

3. Frequent changes in eye power

Dr Neeraj Sanduja, Ophthalmologist, Eye Surgeon at Viaan Eye Centre, Gurgaon told the publication: "Needing frequent prescription changes or feeling that glasses 'never feel quite right' may reflect subtle visual field changes caused by glaucoma rather than simple refractive error progression."

4. Eye pressure or unusual discomfort

Open-angle glaucoma, the most common form of the condition that causes patchy blind spots in your side vision, is often painless or limited to a mild sense of pressure or heaviness in the eyes.

Those suffering from open-angle glaucoma may notice a dull ache after prolonged screen time or reading that improves with rest. Frequently mistaken as regular eye strain, it is often ignored, however, may indicate subtle increases in eye pressure that require professional evaluation.

5. Frequent headaches with eye strain

Frequent headaches, especially when accompanied by eye strain or blurred vision, should not be ignored as migraine pain as it may signal rising eye pressure or early glaucoma changes, Dr Dedhia warns.

Who Is at Risk for Glaucoma?

Certain groups of people have a higher than normal risk of getting glaucoma which includes those who:

• have high eye pressure
• are farsighted or nearsighted
• have had an eye injury
• use long-term steroid medications
• have corneas that are thin in the center
• have thinning of the optic nerve
• have diabetes, migraines, high blood pressure, poor blood circulation or other health problems affecting the whole body
• are over age 40
• have family members with glaucoma
• are of African, Hispanic, or Asian heritage

Abnormal sleeping patterns, whether excessive or brief, can significantly increase your risk of developing chronic liver disease, an EMJ study suggests.

Sleep duration has previously been linked to worsening your chances of Type 2 diabetes; obesity; cardiovascular diseases including hypertension, stroke, heart attack; mental disorders such as depression, anxiety; weakened immune system and potentially contributing to neurological conditions such as dementia.

However, researchers have now also found that sleep disruption may intensify existing stress on the liver which can worsen metabolism and pave the way for disease progression.

The authors noted that poor sleeping habits may influence liver health for multiple reasons including by altering glucose metabolism, increasing inflammation and disrupt circadian rhythms that regulate liver function.

"Participants who reported consistently short sleep duration were more likely to have elevated liver enzymes and higher fibrosis risk scores compared with those reporting moderate sleep duration. Long sleep duration was also associated with adverse liver markers, though the relationship was weaker than that observed for short sleep," the study noted.

Despite discovering links, the involved researchers noted that the study only highlighted sleep as a potential factor that could worsen liver function along with other lifestyle reasons and did not act as a clear cause.

Why Is Chronic Liver Disease A Concern?

Once a rare condition, non-alcoholic fatty liver disease (NAFLD) now affects one in three Indians. A JAMA study has now found that about 40 percent of the global population is now suffering from NAFLD, with abdominal obesity identified as its single biggest risk factor.

Researchers found that nearly 70 percent of people with Type 2 diabetes and about 80 percent of those with obesity are affected by NAFLD. They also discovered that NAFLD prevalence is higher in men than in women, with rates of 15,731 per 100,000 population in men compared with 14,310 in women.

READ MORE: This Deadly Liver Disease Is Affecting People In Their 20s And This One Symptom Is The Red Flag

Between 2010 and 2021, India recorded a 13.2 percent increase in age-standardized prevalence, ranking just behind China at 16.9 percent and Sudan at 13.3 percent. Additionally, the disease peaks earlier in men, between 45 and 49 years of age, while women show the highest prevalence between 50 and 54 years.

NAFLD, now called as metabolic dysfunction-associated steatotic liver disease (MASLD), is when excess fat builds up in the liver, unrelated to heavy alcohol use, due to obesity, Type 2 diabetes, high blood pressure and cholesterol.

It ranges from simple fat accumulation to inflammation and damage, which can progress to fibrosis, cirrhosis or liver cancer, The disease often has no symptoms and is managed with lifestyle changes such as diet and weight loss.

Why Is NAFLD on the rise?

Poor diets (high carbs/sugar), sedentary habits and rising obesity are some of the key reasons why an uptick in NAFLD cases has been seen pan-India. Increased intake of refined carbs, sugary drinks, processed foods and unhealthy fats can increase the risk of obesity, diabetes, hypertension and high cholesterol which can pave the way for this liver disease.

Experts also note that working long hours at desks without any proper physical activity can lead to weight gain and fat accumulation in the liver.

According to the Union Health Ministry, the prevalence of the condition could be in the range of 9-53 percent. Multiple other health studies also suggest nearly 40 percent of urban Indians may have some form of fatty liver disease

Hepatologist Dr Cyriac Abby Philips, popularly known as LiverDoc on social media, noted on X that many patients do not realize that timely lifestyle changes can completely reverse the condition. “All it takes is being in charge of your body and health. No shortcuts—go slow and steady,” he wrote.

If left untreated, NAFLD can progress to Non-Alcoholic Steatohepatitis (NASH), where liver inflammation begins. Over time, this inflammation can lead to scarring of the liver, known as fibrosis. Advanced fibrosis results in cirrhosis, which severely affects liver function.

NAFLD can also increase the risk of chronic liver disease, liver failure and hepatocellular carcinoma. Many patients diagnosed with liver cancer have a history of untreated fatty liver.

Over 2 million Americans have Alzheimer's. It is the most common cause of dementia and is a progressive disease. This means the disease will get worse, however, it could be managed, though cure is not available. It is the biological process that begins with the appearance of a buildup protein in the form of amyloid plaques and neurofibrillary tangles in the brain. This causes brain cells to die over time and the brain to shrink.

What Makes Alzheimer's So Unique?

The fact that there is no cure for Alzheimer's disease is one of the most unique part of the condition. In advanced stages, loss of brain function can cause dehydration, poor nutrition or infection.

The symptoms of Alzheimer's are unique because the signs are easily miss-able. These signs could seem like a day to day problem and not anything serious. At first, it starts with trouble in remembering recent events or conversations. Over time, memory gets worse and other symptoms occur.

While everyone could have trouble with memory at times, the memory loss that happens with Alzheimer's is lasting. The signs could be:

• Repeat statements
• Repeating questions over and over
• Forgetting conversations, appointments and events
• Misplacing items, and putting the in odd places
• Getting lost in places you know very well
• Forgetting names of family members
• Forgetting names of everyday objects
• Have trouble finding the right words, expressing thoughts or having conversations

Unique Symptoms Of Alzheimer's: Cannot Recognize Numbers

Alzheimer's could also lead to trouble in concentrating, thinking, especially about abstract concepts like number. Your thinking and reasoning abilities take a hit. In fact, in many cases, people with Alzheimer's are not able to recognize numbers.

Unique Symptoms Of Alzheimer's: Cannot Perform Everyday Tasks

There are many tasks that you do in your day to day life, which come easy to you, could become difficult over time. As Alzheimer's advances, people forget how to do basic tasks such as dressing or bathing.

Read: What A Finger-Prick Blood Test Could Mean for Alzheimer’s Diagnosis

Your Personality Changes

With Alzheimer's, your personality too can change, as the disease could affect moods and behaviors. Symptoms include:

• Depression.
• Loss of interest in activities.
• Social withdrawal.
• Mood swings.
• Not trusting others.
• Anger or aggression.
• Changes in sleeping habits.
• Wandering.
• Loss of inhibitions.
• Delusions, such as believing something has been stolen when it hasn't.

Are There Any Treatments Or Cures?

UK researchers say fruit flies could help unlock why devastating brain and nerve conditions such as Alzheimer’s, Parkinson’s and motor neurone disease develop, despite decades of medical research. Scientists have known for years that many neurodegenerative disorders are linked to genetic mutations. What has remained unclear is how those mutations actually trigger disease inside the nervous system.

According to the Mirror, new findings published in the journal Current Biology suggest a breakthrough may lie in studying fruit flies, insects whose genes behave in strikingly similar ways to those in humans.