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Hair loss

life science Maturity 11-13 Next article →

Hair loss is a very common experience for many people. It is often called alopecia or baldness. This means losing hair from parts of the head or the body. Sometimes a person only loses hair in a small area. Other times, hair might be lost from the entire body. Most people notice hair thinning in their hairbrush or the sink.

Andre Agassi (2011)
Andre Agassi (2011)

A person might have between 100,000 and 150,000 hairs on their head. It is normal to lose about 100 hairs every day. To keep the same amount of hair, new hair must grow back at the same rate.

Hair grows in a special way using cycles. Each cycle has a long growing phase called anagen. After that, there is a short resting phase called telogen. In a condition called telogen effluvium, many hairs enter the resting phase at the same time. This causes a lot of hair to shed at once. This often happens after a very stressful event or a major surgery. It is also very common for women to see hair loss after they have a baby.

This happens because estrogen levels drop about two to five months after childbirth.

There are many different reasons why hair might fall out. Male-pattern hair loss is caused by a mix of genetics and male hormones. This often starts at the temples or the crown of the head. For women, the exact cause of pattern hair loss is still unclear. Another type is alopecia areata, which is an autoimmune disorder. This is when the body's defense system attacks the hair follicles. It can cause hair to fall out in round patches.

Roshi with group of nuns
Roshi with group of nuns

Some people also lose hair because of certain medicines or infections.

Some causes of hair loss come from things happening to the body. For example, pulling hair too hard can cause traction alopecia. This often happens with tight ponytails or cornrows. Other people might lose hair from rubbing, which is called frictional alopecia. Even tiny mites can cause hair to thin by eating nutrients.

Petróleo Químico Nally - Ilustração Portugueza (6Set1941)
Petróleo Químico Nally - Ilustração Portugueza (6Set1941)

Some medical treatments, like chemotherapy, can cause almost 90% of hair to fall out. This is because the treatment targets cells that are dividing quickly.

Losing hair can be a hard job for how a person feels. Many people think hair is a big part of who they are. Men might associate full hair with being young and strong. Women often feel hair represents femininity. Because of this, hair loss can cause psychological distress. Some people choose to shave their heads to feel better.

Uudenvuodenpuhe 1959
Uudenvuodenpuhe 1959

Others might try medications like minoxidil or even hair transplant surgery. Many people find that accepting the change helps them feel more comfortable.

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File:Andre Agassi (2011).jpg
Andre Agassi (2011).jpg
File:Uudenvuodenpuhe 1959.jpg
Uudenvuodenpuhe 1959.jpg
File:Syngman Rhee and Douglas MacArthur.jpg
Syngman Rhee and Douglas MacArthur.jpg
File:Petróleo Químico Nally - Ilustração Portugueza (6Set1941).png
Petróleo Químico Nally - Ilustração...
File:Roshi with group of nuns.jpg
Roshi with group of nuns.jpg
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