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.

The NHS will not be automatically inviting all men above a certain age to check for prostate cancer, unlike the approach for some other cancers. The UK National Screening Committee has suggested that the prostate-specific antigen (PSA) test should only be actively offered to men carrying the BRCA gene mutation, which increases their risk. Still, men can request a PSA test from their GP in certain situations.

Olympic cycling hero Sir Chris Hoy, who has received a terminal diagnosis, is among those campaigning for men with known risk factors to be invited for a PSA test at a certain age, even if they do not have any symptoms.

Prostate Cancer Screening: What Is The PSA Test?

A prostate-specific antigen (PSA) test checks the level of PSA in your blood. PSA is a protein produced by the prostate, a small gland in the male reproductive system located just below the bladder. The prostate produces the fluid part of semen.

The NHS says the test might be suggested if you notice symptoms that could point to prostate cancer, such as:

• urinating more often than usual, feeling a sudden urge to pee, or waking up frequently at night to urinate
• blood in your urine
• difficulty getting or maintaining an erection

However, for most men, urinary symptoms are caused by something other than cancer.

A PSA test is usually carried out at a hospital or GP surgery by a nurse or other healthcare professional. Men are asked to avoid certain activities for 48 hours before the test, as these can temporarily raise PSA levels and affect the result. Activities to avoid include anything that leaves you out of breath, like strenuous exercise.

If a man’s PSA level comes back high, they may be offered a repeat test to see if the levels remain raised. If they do, the GP may refer them to a specialist for further investigations, such as a biopsy or an MRI scan.

Prostate Cancer Screening: Why Is The PSA Screening So Controversial?

PSA levels can rise for many reasons, including minor infections, and around 75% of men with a raised PSA do not have prostate cancer. A high reading can lead to referrals for unnecessary biopsies or MRI scans, or treatment for tumours that might never have caused harm.

The PSA test can also miss aggressive cancers. Research has shown that roughly 15% of men with a normal PSA result may actually have prostate cancer.

Prostate Cancer Screening: Who Can Currently Get The PSA Test?

Routine PSA testing is not offered as standard on the NHS. You might be offered a test if a doctor suspects symptoms that could indicate prostate cancer. Men undergoing treatment for a prostate condition may be offered regular PSA checks to monitor how treatment is progressing.

Men aged 50 and over can request a PSA test from their GP, even without symptoms. Campaigners say many men are unaware that they are at higher risk of prostate cancer and should be actively encouraged to think about having a PSA check.

Prostate Cancer Screening: Who Else Could Get It?

If the UK National Screening Committee’s recommendation is approved by the Government next year, men with the BRCA gene mutation could also be invited for a PSA test. Men who think a family member might have had the BRCA gene mutation can request a genetic test on the NHS to find out.

Alzheimer's disease is the most common cause of dementia. As you may know, It is a physical illness that causes the brain to gradually stop functioning correctly, leading to a decline in memory and thinking skills. Alzheimer’s is not just a condition that affects not only memory but also many aspects of daily life, including behavior patterns, routines, and speech.

According to Alzheimer’s Society, the disease is affecting more people than ever: roughly one million people in the UK currently have dementia, a figure expected to rise significantly by 2050.

Catching Alzheimer's early is key to ensuring patients and caregivers receive the right medical care and support. One of the best ways to spot the beginning of mental decline is by noticing changes in how a person uses language and speaks.

5 Speech Clues That May Signal Early Alzheimer's

New speech problems are often one of the first indicators of the disease. Here are five subtle signs to watch out for:

Pauses, Hesitations, and Vagueness

People often have trouble finding the exact word they want to use. This causes them to stop frequently, leading to long pauses and hesitations while speaking. When they can't remember the word, they might use very general words like "thing," or they will try to describe what the forgotten word is, they will describe the forgotten word instead of saying it directly.

Using Incorrect but Related Words

A person might replace the correct word with one that is somehow connected to it. For instance, if they mean to say "fork," they might mistakenly say "spoon" because both are common eating tools. In the very early stages, they might use a general category word, like saying "animal" instead of the specific word, "cat."

Talking About a Task Instead of Doing It

When someone needs to start a task, they may struggle to begin or complete it. Instead of discussing the actual steps needed, they talk about their feelings. They might say, "I used to be able to do this easily," or "I don't think I can manage it now," showing worry or doubt instead of focusing on the job at hand.

Less Word Variety

The person's language starts to sound much simpler and less colourful. They tend to stick to basic, common words and may repeat the same verbs and adjectives over and over again. They also use connecting words like "the," "and," or "but" very often to link their basic sentences, making their speech sound repetitive.

Trouble Finding Words in Groups (Categorization)

It becomes difficult for them to quickly name things that belong to a specific category. For example, if asked to name five types of food, different parts of the body, or words starting with the letter 'P,' they struggle. This challenge becomes noticeably harder and more frustrating as the disease progresses.

Why Early Detection Matters

While everyone forgets a word now and then, Persistent and worsening problems with memory, fluency, and varied language could be an early sign of Alzheimer's.

Age is the biggest factor for Alzheimer's risk, with the chance doubling every five years after age 65. However, the disease can affect people under 65 (early-onset Alzheimer's). Spotting these speech changes early is especially crucial for people who are already at a higher risk, such as those with Down Syndrome.

Usually, when your muscle hurts, it's just from working out too hard, pulling a muscle, or getting a bruise. The pain is normal and goes away after a while. However, the National Health Service (NHS) wants people to know that some types of muscle pain are not normal and could be a medical emergency.

Muscle cramps and pain are considered normal; you may have hurt your leg by a fall, stretched your muscles wrong etc. However, not all pain is harmless and it can lead to more serious consequences. Here is how you identify whether your muscle pain is in dangerous territory or not.

Signs You Should See A Doctor Immediately

NHS explains that one should get help right away if your muscle pain feels like:

• A "burning pain" (like something hot is inside your leg or arm).
• A "deep ache" that feels very intense and goes deep into the muscle.

It's a major red flag if this pain gets much worse when you try to move the sore body part. If you have these symptoms, doctors worry it could be a serious problem called Compartment Syndrome.

What is Compartment Syndrome?

The strong, thin layer of tissue which holds your muscles is called fascia. A compartment is just one of these tight bundles of muscle, blood vessels, and nerves.

Compartment syndrome happens when something causes a lot of swelling or bleeding inside that bundle. Because the fascia around the muscle doesn't stretch easily, the pressure inside the compartment goes up very fast.

This high pressure squeezes the blood vessels and nerves, stopping blood from flowing properly. When blood can't get in to bring oxygen or out to remove waste, the muscle tissue starts to die. That's what causes the severe pain.

What Are The Symptoms of Compartment Syndrome?

It's important to watch out for these symptoms, especially if they follow an injury or intense activity:

Intense Pain: The pain is severe, much worse than normal soreness. It might feel like a deep, burning ache inside the muscle.

Worse with Movement: If you try to move the sore arm or leg, the pain gets instantly and much worse.

Swelling: The muscle might look puffy, or it might feel rock-hard or tight to the touch.

Odd Sensations: You might feel numbness, a pins-and-needles feeling, or feel weak in your hand or foot.

Tightness: The area feels so tight you have trouble moving it normally.

How is Compartment Syndrome Treated?

If the problem is sudden and severe (Acute Compartment Syndrome), it is an emergency, and doctors must act right away.

The Surgery (Fasciotomy)

The surgeon makes a long cut through the tough skin (the muscle cover) that is squeezing the muscle. This immediately releases the pressure, allowing blood to flow normally again to the muscle and nerves.

Recovery

Afterward, you'll need pain medication, and sometimes a skin graft (taking skin from another part of your body) to cover the large wound. You will also need physiotherapy to help the muscle get back its full movement and strength. Since the pain here is linked to exercise, treatment usually starts with changes to your routine:

• Stop activities that trigger the pain. For example, if running hurts, try riding a bike or swimming instead.
• Use anti-inflammatory medicines (like ibuprofen) to ease the discomfort.
• A physical therapist will teach you special stretches and strengthening moves.
• If you run, wearing special shoe inserts might help.
• If these easy changes don't work after a few months, your doctor might then suggest a small surgery.