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.

Aging is a significant factor in memory loss and cognitive decline. Now, a team of US researchers has pinpointed a single protein that drives these changes in the brains of the elderly.

In aging mice, higher levels of protein FTL1 weakened connections between brain cells, leading to memory decline.

But when FTL1 was reduced, the brain began to recover. It also rebuilt lost connections and restored memory performance, according to the study, published in Nature Aging.

"It is truly a reversal of impairments," said Saul Villeda, Associate Director at the University of California - San Francisco's Bakar Aging Research Institute and senior author of the paper. "It's much more than merely delaying or preventing symptoms."

While the research was carried out in aging mice, it holds immense potential for human brain function.

FTL1: A Key Driver Of Brain Aging

In the study, the researchers tracked shifts in genes and proteins in the hippocampus of mice. The FTL1 protein appeared consistently different between young and old animals.

Compared to young mice, the older mice showed higher levels of FTL1. They also had fewer connections between neurons in the hippocampus and performed worse on cognitive tests.

Increasing FTL1 levels in young mice produced brain changes similar to those seen in older mice. The researchers found that this change occurs because of alterations in the way nerve cells produce FTL1 protein.

In older mice, the nerve cells that produced high amounts of FTL1 developed simplified structures, forming short, single extensions instead of the complex, branching networks seen in healthy cells.

Further experiments showed that in older mice, higher levels of the protein slowed cellular metabolism in the hippocampus -- the part of the brain responsible for learning and memory.

However, when researchers treated these cells with a compound that boosts metabolism, the negative effects were prevented.

Also read: This Unique Diet Slows Brain Aging By Over 2 Years, Study Says

A Promise For Future Brain Aging Therapies

Villeda believes these findings could pave the way for treatments that target FTL1 and counter its effects in the brain.

"We're seeing more opportunities to alleviate the worst consequences of old age," he said. "It's a hopeful time to be working on the biology of aging."

Also read: Exercising Could Make Your Brain Younger, Says Doctor

Here's How To Boost Your Brain

• Simple movements like squats, push-ups or resistance band exercises
• Indulging in mentally challenging activities such as puzzles, reading, strategy games
• Learn new skills like any language, or musical instruments
• Better sleep — about 7-9 hours
• Healthy diet — rich in leafy greens, vegetables, berries, nuts, olive oil, whole grains, fish, beans, poultry
• meditation, deep breathing, or yoga
• Avoid smoking, and drinking alcohol.

Cancer treatment has long been thought to be unsuccessful among people of advanced age, and older adults are often left out of clinical decisions.

While they may face more surgical complications, a new study proved that even people aged over 80 can still safely have surgery and be cured. It showed that the overall health of a patient matters more and that age must not be the only criterion to rule out surgery.

The study, published in The Lancet Regional Health – Americas, showed that surgery for lung cancer is safe in elderly patients aged 80 and above, especially when the cancer is in an early stage.

Researchers at the Icahn School of Medicine at Mount Sinai and the Mount Sinai Tisch Cancer Center in the US found that they can recover like young cancer patients as well as live longer like them.

“As our population ages, more patients over 80 are being diagnosed with early-stage lung cancer, yet they are often not considered for surgery,” said Raja M. Flores, Chair of the Department of Thoracic Surgery at Mount Sinai Health System.

“Our findings show that when patients are carefully selected based on their overall health, not just their age, they can tolerate surgery well and experience excellent long-term outcomes,” he added.

What Did The Study Find?

The study findings are based on a study of 884 patients with early-stage lung cancer, including 114 people who were age 80 or older.

The researchers examined surgical outcomes and quality of life in patients with early-stage non-small cell lung cancer, comparing those aged 80 and older with younger patients.

The results showed that older patients lived just as long as younger patients after surgery. While some older patients had more complications right after surgery, most patients in both groups felt better over time, and their quality of life improved within a year.

The study noted that early detection in older patients may be key. The researchers called for screening guidelines to include patients who are over 80 years old based on these findings.

Also read: Scientists Link Vaping to 2 Types of Cancer; DNA-Damaging Chemicals to Blame

What Is Lung Cancer?

Lung Cancer is one of the most common and serious types of cancer. It is also the leading cause of cancer-related deaths worldwide, with approximately 2.5 million new cases and 1.8 million deaths reported in 2022.

According to the American Cancer Society, lung cancer mainly occurs in older people. Most people diagnosed with lung cancer are 65 or older; a very small number of people diagnosed are younger than 45.

The average age of people when diagnosed is about 70.

It is also the leading cause of cancer death in the US, accounting for about 1 in 5 of all cancer deaths.

In many cases, there are no symptoms; however, one must look out for these:

• a persistent cough
• coughing up blood
• persistent breathlessness
• unexplained tiredness and weight loss
• an ache or pain when breathing or coughing.

Also read: New AIIMS Study To Probe How PM2.5 Is Surging Lung Cancer Risk In India

The two main types of lung cancers are:

Non-small-cell lung cancer (NSCLC): This is the most common form, making up about 80–85% of all cases. NSCLC includes three subtypes:

• Squamous cell carcinoma
• Adenocarcinoma
• Large-cell carcinoma

Cancer is not just a problem of elderly people anymore. In India, there has been an increased number of cases where individuals under the age of 40 are diagnosed with various forms of cancer. Even if there are fewer cases of this medical condition among younger people, this fact does not change the fact that one-fifth of all cancer patients in India are younger than 40 years.

Breast cancer, colorectal cancer, head and neck cancer, as well as blood cancer, are some types of cancer that become more common at a younger age. Among the most alarming statistics, the incidence of colorectal cancer in people aged 30-40 should be mentioned. Moreover, the fact that breast cancer becomes evident nine years earlier in Indian women in comparison with Western women must also be noted.

What Makes This Problem Increase?

There is a wide variety of factors that contribute to this problem. These are the following:

• Lifestyle changes, such as lack of exercise, unhealthy eating habits, being overweight, and stressful situations
• Alcohol and tobacco consumption
• Pollution in the urban environment
• Problems with early diagnosis due to the negligence of patients
• Low screening rates among the young population

Early detection saves lives. Some warning signs to look out for are:

• Sudden and unexplained weight loss
• Endless fatigue
• Digestion issues
• Breast lumps or any swellings anywhere in the body
• Coughing or trouble swallowing persistently

Why Late-stage Diagnosis Is Even More Serious

Not only does it take time to diagnose cancer cases in young patients due to low suspicions, but these cancers also create an additional burden on people during their prime earning period.

How To Combat This Trend

There needs to be a paradigm shift in our understanding of this problem. First of all, we have to understand that cancer affects patients irrespective of their age, and therefore, when you experience some symptoms of cancer, do visit a doctor to get your condition checked out.

The key is maintaining healthy practices like balanced nutrition, exercising, not smoking, and limiting consumption of alcohol.