Why do mosquitoes bite some people and ignore others?

Have you ever noticed that mosquitoes seem to ignore everyone else but always find you? Well, you may not be imagining it.

Some people attract more mosquitoes than others, according to a report by GoodRx, which identifies several factors that can influence how likely someone is to be bitten.

These include things people cannot easily change, such as their blood type and body chemistry, as well as factors such as clothing, alcohol consumption and pregnancy.

Here are eight reasons mosquitoes may be biting you more than other people

1. Carbon dioxide

You may be attracting mosquitoes simply by breathing. Every time you exhale, you release carbon dioxide (CO₂), which mosquitoes can detect.

Seensing CO₂, appears to be one of the first signals mosquitoes use to determine that a potential meal is nearby.

Once they detect carbon dioxide, mosquitoes can use other cues, including smell, vision and heat, to locate humans.

So, unfortunately, breathing makes you detectable to mosquitoes.

2. Your body odour

Your body odour could also attract mosquitoes. Whenever you sweat, your body releases chemicals, including carboxylic acids, ammonia and lactic acid. The amount and combination of these chemicals can differ from one person to another.

While some people may produce a combination of chemicals that mosquitoes find particularly attractive.

This could help explain why one person can sit outside and barely get bitten while another person nearby is constantly driving mosquitoes away.

While deodorant may temporarily mask body odour, it does not change the underlying chemicals produced by the body.

3. Body heat

Mosquitoes are attracted to heat, meaning your body temperature can also help them locate you.

Don't use mosquito nets as trap doors and window nets

GoodRx cites research showing that mosquitoes can detect relatively small differences in temperature.

This means people whose body temperature is higher, such as after exercising, may become more noticeable to nearby mosquitoes.

Your body heat therefore becomes another signal that helps mosquitoes find you.

4. Blood type

Your blood type may also play a role in attracting the tiny insects. GoodRx cites research suggesting that people with Type O blood are more likely to be bitten by Aedes aegypti mosquitoes, while people with Type A blood may be less attractive to them.

However, blood type is only one of several factors that influence mosquito attraction.

So if you have ever wondered why mosquitoes appear to bite you more than the person sitting beside you, your blood type could be part of the reasons.

5. The colour of your clothes

What you wear could also influence how easily mosquitoes find you. GoodRx cites research suggesting that mosquitoes may be attracted to bright colours such as orange and red, while showing less interest in green and blue.

There is also evidence that mosquitoes are more attracted to people wearing darker colours.

While no colour will make you invisible to mosquitoes, wearing lighter-coloured clothing may help reduce their attention.

6. Pregnancy

Pregnancy can make a person more attractive to mosquitoes. GoodRx cites studies showing that pregnant women may be more likely to attract mosquitoes because pregnancy increases metabolism.

Higher metabolism can result in greater production of carbon dioxide and body heat, two signals mosquitoes use when looking for humans.

This means pregnancy can increase some of the cues that mosquitoes use to locate their targets.

7. The bacteria living on your skin

Your skin is home to bacteria that can also influence your body odour. These bacteria help break down sweat and produce different smells. Some of these odours may be more attractive to mosquitoes than others.

GoodRx cites research suggesting that people with certain types of skin bacteria may be more attractive to mosquitoes.

So, if you are always the person complaining about mosquito bites, your skin's microscopic ecosystem could be part of the reason.

8. Alcohol consumption

Taking an alcoholic drink may also increase one's chances of attracting mosquitoes.

GoodRx cites research suggesting that alcohol, particularly beer, can make people more attractive to mosquitoes.

One study found that participants were bitten more frequently after drinking beer than when they had not consumed it.

So that cold beer may be refreshing, but it could potentially make you more noticeable to mosquitoes.

Mosquitoes use several signals to locate humans, including carbon dioxide, body odour, heat and visual cues. Individual differences such as blood type, skin bacteria, pregnancy and possibly diet can also influence mosquito attraction.

Some of these factors are beyond a person's control.

However, people can still take steps to reduce mosquito bites by wearing appropriate clothing, using insect repellent, insectide treated bed nets and reducing mosquito breeding sites around their homes.

This is particularly important in countries such as Ghana, where mosquito bites can carry the risk of malaria and other mosquito-borne diseases.

So, if you always seem to be the first person mosquitoes attack, there may be more behind it. Your breath, body chemistry, temperature, clothing and even the bacteria living on your skin could all be helping mosquitoes find you.

JKB/AM

GoldBod had no role in 2024 gold sale losses – Sammy Gyamfi