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Causes of hair loss

Experiencing sudden hair loss or seeing your natural hair growth thin out is very difficult for everyone. Hair loss is due to many different causes – genetic causes, heredity, diet, psychological or physical trauma, or various medications. In the vast majority of cases, however, a suitable solution exists.

Are you experiencing hair loss? Come in for a free consultation and we’ll help you. During the consultation, we will examine your hair follicles with a microcamera and together we will decide which treatment is best for you.

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Why do we lose hair?

Losing hair normally occurs in several stages over a long period of time However, if the hair loss is caused by a disease, it can happen very quickly.

In hereditary hair loss, there is a gradual change in the hair follicle. The hair follicle shrinks and the production of hair strands weakens. Eventually, the hair follicle becomes so stunted that hair strands fall off.

The anagenic growth phase also becomes shorter with age. When we are younger, a hair follicle has a lifespan between 2-10 years. In older people, this phase is shorter because the strength of the hair follicle is not what it once was because the hair follicle is stunted. This means that the lifespan of the hair strand becomes shorter and eventually falls off.

Other conditions such as. stress, vitamin deficiency, medication and various diseases also cause hair loss.

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Hereditary hair loss

Hair loss is usually hereditary

By far the most common cause of hair loss is genetic. Some people have encoded in their genes that hair loss should start at a young age, while others have retained most of their hair by the age of 70.

Regardless, hereditary hair loss is a natural process but there are very good possibilities for treatment if it is started in time.

The hormone DHT and its genetic attributes are the underlying cause of hereditary hair loss.

Read more about hereditary hair loss
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Stress and hair loss

If you’ve been under a lot of stress for a long time, have symptoms of exhaustion, or have been through physical or psychological trauma, your body often reacts by shutting down hair production.

However, the hair remains on the head during the stressful period. Therefore, it is difficult to make the connection to the stressful period itself. Up to 6 months after the hair has been put into a resting phase, it falls off and then you can lose a lot of hair in a short time.

Read more about stress and hair loss
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Diseases and hair loss

There are many hair diseases that lead to hair loss, bald patches on the head and thinning hair – some diseases are easy to cure, while others can only be slowed down as there is no permanent cure.

Here we have gathered information about some of the most common hair diseases linked to hair loss, what they mean and what you can do about them.

Read more about diseases and hair loss
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Thyroid gland

Thyroid and hair loss

The thyroid gland is a small gland located at the front of the throat. It is one of the body’s most important glands and has a major impact on the body’s general condition, including the quality of hair and skin.

Through the production of the hormones T-3 and T-4, the thyroid gland controls important bodily functions such as metabolism, calorie burning, body temperature and heart rate.

Thyroid problems affect women far more often than men.

Read more about the thyroid gland
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Vitamin deficiency

Iron deficiency and hair loss

In women, iron deficiency is often a cause of hair loss. Usually this is due to an overly unbalanced diet or heavy menstrual periods. However, men may also lose hair due to iron deficiency. If iron deficiency is suspected, we can check it at the clinic and you will get an answer within a few days.

However, relatively few people in Sweden suffer from hair loss or thinning hair due to iron deficiency. The vast majority of people eat good enough food not to suffer from severe deficiencies that can cause hair loss. However, people with eating disorders or extreme diets can be negatively affected, and not just in terms of hair.

Read more about iron deficiency and hair loss
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Medications and hair loss

Some medications affect hair growth. Cancer drugs have a strong effect on hair growth. Some cancer treatments wipe out everything in the body because they can’t distinguish between cancer cells and healthy cells well enough.

Other medications that can cause hair loss include certain types of antibiotics, anticoagulants, antidepressants and acne medications that contain vitamin A.

Hormonal causes of hair loss


Female hair loss usually begins at menopause when the amount of estrogen in the body decreases. Oestrogen affects many organs in the body and the new hormone levels can affect hair growth. Medication with oestrogen alone does not usually make hair loss reversible.

The pill

Some women lose hair while on the pill. This can usually be linked to when there is a change of contraceptive pills with a different hormonal composition than those previously taken.

Read more about hair loss and the pill

Hair loss after pregnancy

During pregnancy, many people find that their hair grows very well. This is because the body produces a lot of hormones during pregnancy. After giving birth, the body tries to return to its normal hormone production and you experience a lot of hair loss.

Read more about hair loss after pregnancy

Frequently asked questions about hair loss

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