Do Mosquitoes Prefer A Blood Type?

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Mosquitoes are attracted to people and will feed on their blood. Do mosquitoes prefer a blood type? The answer is yes. There is some evidence that mosquitoes prefer certain blood types over others, but there is no definitive answer.

It has been a long-standing question, and a study found that while all mosquitoes are not exclusive to one blood type, different species of mosquitoes do have different preferences. For example, the Anopheles gambiae mosquito prefers Type O blood, while the Culex quinquefasciatus mosquito prefers Type A blood.

Are people with a specific blood type more prone to mosquito bites than others?

Mosquitoes are known to be drawn to carbon dioxide that humans exhale, as well as certain scents and body odors. So, what type of blood do mosquitoes like?

It has been confirmed that people with one blood type are more prone to mosquito bites than those with other blood types. This is due to the presence of specific antigens on the surface of red blood cells that mosquitoes are more attracted to.

Do Mosquitoes Prefer a Blood Type?

It is said that mosquitoes are more likely to bite people with type O blood than those with any other blood type.

This is expected in people with type O blood, which produces more of the H antigen than other blood types. Mosquitoes may also be attracted to secretors, people who produce the H antigen.

Do Mosquitoes Prefer a Blood Type?

Do mosquitoes prefer a certain blood type? Yes, they do prefer a blood type.

Red blood cells which contain antigens on their surface that determine the blood group

Though mosquitoes are known to be attracted to human blood, they land on people with Type O blood twice as frequently as those with Type A or B blood. This information could help scientists develop new ways to prevent mosquito bites.

What Blood Type Do Mosquitoes Avoid?

When it comes to mosquitoes, it seems that not all blood is created equal. While the pesky insects will happily feast on some blood types, others seem to be off-limits. So what blood type do mosquitoes avoid?

Interestingly, mosquitoes seem to have a preference for type O blood. This is the most common blood type, making up around 40% of the population. Type A is the second most popular, accounting for around 30% of people.

But when it comes to mosquitoes, these numbers are reversed. Studies have shown that Type A blood is actually twice as attractive to mosquitoes as Type O.

So why the difference? It all comes down to sugar. or more specifically, a sugar called galactose.

What Other Factors Attract Mosquitoes?

Mosquito scucking the blood from human

True, mosquitoes are more attracted to people with Type O blood, but that isn’t the only reason they might choose to feed on you over someone else.


Mosquitoes are attracted to people based on their metabolic rate. The faster someone’s metabolism, the more likely they are to be bitten by a mosquito.

This is because mosquitoes are looking for a source of food, and the person with the fastest metabolism will provide that food quicker than anyone else.

Your clothing

Mosquitoes are attracted to a variety of things, including carbon dioxide, sweat, and lactic acid. However, one of the most important factors that determine whether or not a mosquito bite is the availability of blood.

Studies have ascertained that mosquitoes are more likely to bite people with Type O blood than those with other blood types. To reduce your possibility of being bitten by mosquitoes, wear clothing that covers you but is not too hot and use repellents.

Carbon dioxide

Mosquitoes are tempted to carbon dioxide, which is released when an organism exhales. This alerts mosquitos to potential hosts, leading them to the source of carbon dioxide. Carbon dioxide levels vary depending on a person’s blood type.

For example, people with Type O blood release more carbon dioxide than those with Type A or B blood.

Mosquitoes are able to hone in on their human prey by detecting carbon dioxide from a distance. This allows them to feed on humans and animals that give off the gas.

Body odor

Mosquitoes are attracted to certain compounds on the skin that make people smell more appealing. The bacteria on the skin can also affect body odor, and mosquitoes are more attracted to odors from identical twins than fraternal (nonidentical) twins.


Mosquitoes are attracted to heat sources and can be drawn to people in search of a blood meal. Female mosquitoes are especially drawn to human bodies, specifically the head.


Mosquitoes are more attracted to black objects than any other color. This is because they are able to see the contrast between light and dark better and thus can find their prey more easily.


Some evidence suggests that drinking beer may attract mosquitoes to people more. This is an observational study, so you cannot conclude yet. However, it is an interesting topic for further research.


Studies have shown that pregnant women release more carbon dioxide and have a higher body temperature, which may attract mosquitoes. They were discovered to be twice as likely to bite pregnant women as non-pregnant women.

How to treat a mosquito bite?

Mosquito bites naturally resolve on their own after several days. You can do some things in the meantime to help ease any itching or discomfort, including using a cold compress, calamine lotion, or antihistamines.

An itchy mosquito bite

There are various therapies available to ease the itching associated with mosquito bites. Over-the-counter (OTC) anti-itch creams and oral antihistamines can be helpful in reducing itching. However, it is important not to scratch the bite, as this can increase the risk of skin infection.

What can you do to prevent mosquito bites?

There are a few different things you can do to prevent mosquito bites. Besides preventing mosquito bites through your blood type, you can take other precautions to keep the mosquitoes away

  • The most substantial thing is to use mosquito repellent.
  • You can also avoid outdoor activities during the day when mosquitoes are most active.
  • Additionally, you can wear long sleeves and pants to cover up as much skin as possible.
  • Ensure that there are no tears in your screens and that you drain any standing water around your house. 

These small steps can help reduce the number of mosquitoes near your home and minimize the risk of getting bitten.

Why Does a Mosquito Bite Itch?

One of the most common reasons they bite is because they are looking for a blood meal. They feed on nectar, sap, and other sweet substances as well, but when they bite into human skin, they inject an anticoagulant to keep the blood flowing while they suck it up.

This is why mosquito bites itch, and the anticoagulant causes inflammation and irritation. The mosquito will also inject saliva while the other tube takes blood out, which is what causes the itchiness.

Home remedies for mosquito bites

Mosquitoes can be a total aggravation, and their bites often cause an itchy, red rash. Several home medications can help reduce the itching and swelling caused by mosquito bites.

Mosquito bites can be itchy and annoying. There are a few remedies that people have used to help relieve the symptoms of a mosquito bite.

  • One popular remedy is to apply ice to the bite. This helps to reduce the swelling and itchiness. 
  • Another common remedy is to use essential oils, such as lavender oil or tea tree oil. These oils help to soothe the skin and stop the itching. 
  • Finally, some people have found relief by applying toothpaste to the bite.
natural mosquito repellent to avoid mosquito bites

Final Thoughts

In Conclusion, if you are wondering why do mosquitoes like type o blood, there is some evidence that mosquitoes may prefer humans with type O blood but this does not mean they will not bother people with other blood types. In fact, mosquitoes will bite any human being if they are desperate for a blood meal.

So, while it may be true that mosquitoes are more likely to bite Type O blood, there is no guarantee that they won’t feast on others as well.

Although it is known that mosquitoes are more attracted to some blood types than others, the full scope of this relationship is still being analyzed.

Until we better comprehend the factors that exploit mosquito attraction, it is difficult to say with certainty which blood type is most at risk for mosquito-borne illnesses.


What Blood Type do mosquitoes like?

Mosquitoes are drawn to certain compounds found on human skin and in sweat. These compounds emit a distinct odor that attracts mosquitoes. Several different compounds have been identified as mosquito-attractive. Lactic acid and ammonia are two instances that you may be familiar with.

Why does a mosquito bite itch?

The mosquito insinuates saliva into your skin while feeding. Your body responds to the saliva, resulting in a boil and itching. Some people have only a benign reaction to a bite or bites. Others may react more aggressively, resulting in widespread swelling, soreness, and redness.

What are the ways to avoid itchy bites?

Applying an ice pack to the bite to reduce swelling or an over-the-counter anti-itch cream, such as hydrocortisone, to itchy bites. Another option is to take an antihistamine that is available over-the-counter. 

About the author

A biotechnologist by profession and a passionate pest researcher. I have been one of those people who used to run away from cockroaches and rats due to their pesky features, but then we all get that turn in life when we have to face something.