Why Do Mosquitoes Bite Some People More Than The Others?

Updated Jul 26, 2024 | 01:25 PM IST

SummaryMosquitoes love biting some people more than others! They are attracted to your breath (CO2), sweat, dark colours, and even your body heat. Here is what you need to know.
Mosquitoes Bite Some People (Credit-Freepik)

Mosquitoes Bite Some People (Credit-Freepik)

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.

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Colon Cancer Is The Leading Cause Of Death In US For People Under 50

Updated Mar 13, 2026 | 09:33 AM IST

SummaryColon cancer is now the leading cancer killer among Americans under 50, according to the American Cancer Society. Experts stress early screening, recognizing symptoms, and testing earlier for those with family history, genetic risks, or warning signs.
Colon Cancer Is The Leading Cause Of Death In US For People Under 50

Credits: Canva

A new analysis by the American Cancer Society observed that colon cancer or colorectal cancer has now become the leading cause of cancer death in US for people under 50. As per the report from the American Cancer Society, adults who are 65 or younger comprise nearly 45 per cent of all new colorectal cancer cases. This is a significant increase from 27 per cent in 1995.

Dr Timothy Cannon, director of the Molecular Tumor Board and co-director of the Gastrointestinal Cancer Program at Inova in Virginia who spoke to Fox News Digital said, "Once considered a disease that primarily affected people over 50, we are now seeing increasing diagnoses in patients in their 20s, 30s and 40s — making it even more important not to dismiss symptoms based on age alone."

How Can You Detect Colorectal Cancer?

Doctors and experts across say that early screenings could help. Health officials recommended screenings to start at the age 45 and continue through age 75 for adults at "average risk".

Other ways could also be stool-based test that are used to detect blood or DNA changes, which could be potential indicators of colorectal cancer.

A colonoscopy is another method, a medical procedure that allows a doctor to examine the inside of a patient's colon and rectum. It uses a thin, flexible tube with a camera on the end. It is typically done every 10 years for adults at average risk.

"Colonoscopy remains the gold standard because it not only detects cancer early but can also prevent it by identifying and removing precancerous polyps," said Cannon.

Dr Michael Martin, who is a California-based physician, however, emphasized that colonoscopy is usually done for younger patients who are at higher risk.

As per Dr Martin, Stool-based tests are appropriate screening options for average-risk adults, but they are not the best choice for people with significant family history, inflammatory bowel disease, hereditary syndromes or alarm symptoms. If symptoms are present, the goal is not screening but diagnosis, and colonoscopy is usually the more appropriate test."

Who Should Get Screened For Colorectal Cancer Before 45?

There are three kinds of people who could get their colon cancer screened before turning 45. Experts suggest these people are as followed:

People With Strong Family History

The American College of Gastroenterology recommends early screening if one first-degree relative is diagnosed with colorectal cancer, or an advanced polyp before age 60, or if two first-degree relatives are diagnosed at any age.

Symptoms That Are Critical

There are red flags which could hint you to get the screening done before 45, they include:

  • Rectal bleeding with bright red blood
  • Dark or black stools
  • Blood in stool
  • Persistent changes in bowel habits like constipation or diarrhea
  • Unexplained iron deficiency or anemia
  • Ongoing abdominal pain or cramping
  • Unexplained weight loss
  • Persistent sensation that bowel is not emptying fully

Genetic Condition

Some people with certain genetic condition could have an increased risk of colon cancer, this includes people with Lynch syndrome. This is an inherited DNA mutation that increases lifetime risk. People with this condition should get a colonoscopy every one to two years starting from the age 20 to 25 years, or two to five years before the youngest diagnosed family case, note the National Cancer Institute.

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World Sleep Day: 6 Daytime Habits That Could Help You Sleep Better

Updated Mar 13, 2026 | 09:12 AM IST

SummaryOn World Sleep Day, themed “Sleep Well, Live Better”, here are six daytime habits that may improve sleep quality, including morning sunlight, consistent meals, mindful caffeine intake, medication timing, regular wake-up schedules, and exercise timing.
World Sleep Day: 6 Daytime Habits That Could Help You Sleep Better

Credits: Canva

Every year, on March 13, World Sleep Day is observed, with this year's theme being "Sleep Well, Live Better". In many ways, it is true, as the National Institutes of Health, US, notes that sleep helps with almost everything in your life. A good sleep helps with learning and the formation of long-term memories. Not getting enough sleep or enough high-quality sleep could lead to problems, affect your mood, immune system and your learning capabilities. So, to be true to the theme of "Sleep Well, Live Better", Health and Me, based on what experts told The New York Times (NYT), came up with six day-time habits that will help you sleep better.

Why is it important? Much conversation that happens around good sleep focuses on nighttime routine, but what you do throughout the day also impacts how well you sleep.

Speaking to NYT, Joseph Dzierzewski, senior vice president of research and scientific affairs at the National Sleep Foundation, noted that daily habits play a critical role in regulating sleep patterns. According to him, the choices people make during the day can be just as important as their bedtime routines.

Morning Sunlight Is Important

As per Dr Indira Gurubhagavatula, a professor of sleep medicine at the University of Pennsylvania Perelman School of Medicine, who also spoke to NYT, getting sunlight within an hour of waking helps suppress sleep-inducing hormones and signals the body to shift into "wake mode". This helps reset body's internal clock so that it naturally becomes tired again by bedtime.

While spending an hour outdoors may not always be feasible, experts say even short bursts of light exposure help. Opening the blinds, sitting by a window, or having morning coffee on a balcony can make a difference. Even about 10 minutes of sunlight is better than none.

Read: Not Boarded Any Flight And Still Monday Feels Like A Jetlag? You Are Not Alone

A Consistent Mealtime

Experts note that the body operates on a 24-hour internal clock known as the circadian rhythm, which regulates sleep and wake cycles. The digestive system also plays a role in this rhythm and responds to cues about when food is consumed.

Eating meals at inconsistent times may disrupt this rhythm and potentially affect sleep quality.

A consistent meal time also helps with healthy habits and helps you to avoid digestive discomfort and acid reflux during sleep.

Caffeine Habits: Is It Time To Rethink It?

Dr. Charlene Gamaldo, a neurologist and sleep medicine specialist at Johns Hopkins Medicine, told NYT that caffeine stays in some people's systems much longer than others. In slow metabolizers, caffeine from a morning coffee could remain in the body for more than 12 hours, potentially interfering with sleep.

Time Your Medication For Early Hours

According to Dr. Gurubhagavatula, certain drugs, including decongestants such as phenylephrine and pseudoephedrine, medications used for ADHD and asthma, some antidepressants, and oral steroids, may have stimulating effects.

This is because some medication could make it harder for you to fall or stay asleep, when taken late in the day.

Be Consistent When You Wake Up

Experts say that frequently changing wake-up times, even on weekends, can disrupt the circadian rhythm and make it harder to maintain a healthy sleep schedule. However, the timing does not need to be exact. Staying within about 30 minutes of the usual wake-up time is generally sufficient to maintain consistency.

Be Attentive Towards Your Workout Timing

Regular exercise is widely associated with better sleep, and health guidelines recommend at least 150 minutes of moderate aerobic activity each week. However, for some people, exercising too close to bedtime may make it harder to fall asleep. Strenuous workouts can temporarily increase body temperature and raise stress hormones and endorphins, which may keep the body alert.

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Sleep Apnea Pill Could Be The Latest Breakthrough

Updated Mar 13, 2026 | 09:06 AM IST

SummaryA Phase II trial found the anti-seizure drug sultiame may improve obstructive sleep apnea symptoms and sleep quality. Researchers say the pill could offer a promising alternative for patients who struggle to tolerate CPAP machines.
Sleep Apnea Pill Could Be The Latest Breakthrough

Credits: Canva

About 30 to 83.7 million adults in the United States have Obstructive Sleep Apnea (OSA), notes American Lung Association. Roughly 80 per cent of these cases remain undiagnosed. However, now, a simple daily pill, an old drug, could just be the solution.

Scientists in Sweden and other places too, have been studying the anti-seizure medicine sultiame as a treatment for OSA. In their latest Phase II trial, the scientists found that people on sultiame experienced an improvement in their apsea symptoms, and their sleep quality too improved as compared to those taking placebo.

The results points towards the potential of sultiame becoming an effective option for people with sleep apnea, especially those who cannot tolerate continuous positive airway pressure (CPACP) machines. The findings are published in The Lancet, and the researchers noted: "These findings offer perspective for a pharmaceutical approach to treatment of patients with obstructive sleep apnea."

Sleep Apnea Pill: What Is This Condition?

OSA is the most common form of sleep apnea, and it happens when airway muscles physically block a person's breathing during sleep. This could pause the body to wake up enough to start breathing again, only for the cycle to restart throughout the night, anywhere from five to 100 times an hour. This also causes low oxygen levels and disturb people's sleep and, over time, can raise the risk of other long-term health problems, which could include heart diseases and even dementia.

What CPAP machines do is they use air pressure to keep the airways open during sleep. While machines are an effective way, some people have trouble using them long term, which is why some companies use less cumbersome interventions, including medicines.

Read: Harish Rana Case Highlights Why Planning For A Living Will Is Important

Sleep Apnea Pill: What Was It Used For?

Sultimae or sulthiame was first launched in the 1960s by Bayger AG as an anticonvulsant - which means, it was a drug designed to treat epilepsy and prevent seizures by stabilizing nerve cell membranes and reducing abnormal, excessive electrical activity in the brain.

What the drug does is, it inhibits carbonic anhydrase, an enzyme that plays a role in regulating our breathing. Research also suggested that this could help people with sleep apnea by preventing airway collapse. The US-based Apnimed, in collaboration with the Japenese company Shionogi & Co., Ltd., have been looking to develop sultiame as a sleep apnea treatment.

How Well Has The Sleep Apnea Pill Been Tested?

The phase II of the trial involved 298 patients. Of them were untreated, moderate and people with severe sleep apnea. The people were observed for over a 15-week period, of them, half were randomized to a placebo pill to be taken right before bed, while rest were given varying doses of sultiame.

The results showed that people who took sultiame saw a noticeable decrease in apnea symptoms and also witnessed improvements in their sleep quality and daytime sleepiness. People in the highest dose group saw the most improvement, with apnea symptoms being reduced up to 47 per cent.

“It feels like a breakthrough, and we now look forward to larger and longer studies to determine whether the effect is sustained over time and whether the treatment is safe for broader patient groups,” said study researcher Jan Hedner, a senior professor of pulmonary medicine at the University of Gothenburg.

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