The Basics Of Human Hair Loss – 7 Surprising Reasons

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Human hair loss is not a strange story to many of us. Scientific research shows that human shed about 80 strands daily. You find our hair your hair on the carpet, on the wall, or over the shower drain.

Things only get scary when you notice you shed more than the average number. And most of them refuse to grow back.

What are the reasons behind this phenomenon? Find out the seven possible triggers of hair loss right below!

The Basics Of Human Hair Loss – 7 Surprising Reasons

Read more: The best way to take care of color hair extension

Types of human hair loss

Research reveals that women suffer from hair loss more than what we think. Every 1 in 3 women will be likely to get hair loss at some periods in their life. Surprisingly, not everybody suffers from the same types of human hair loss.

There are two kinds of hair loss.


The human gene isn’t 100% identical. As a result, some people were born with perfect healthy hair. Others experience hair thinning over time. This condition is known as genetic hair loss.

People with predisposed genes to hair loss tend to reduce their hair density gradually. The result is often baldness.

The Basics Of Human Hair Loss – 7 Surprising Reasons

Genetic problems can lead to baldness in both men and women.

One possible explanation is that some hair follicles are susceptible to male hormones. As women approach menopause, there is a sudden surge in testosterone and sharply decrease in estrogen.

The significant amount of male hormones disrupt the normal function of follicles. Gradually the follicles diminish and produce fragile and weak hair strands. This condition is shaped by predisposed genes only.


Reactive hair loss refers to a condition in which an external or internal factor triggers hair fall. This condition is also called telogen effluvium. Telogen effluvium appears when you encounter nutritional deficiency, stress or illness.

7 causes of hair loss

There are most common seven reasons to explain why you are suffering from hair thinning.

Hormonal imbalance

Human hormones play an essential role in managing the cycle of hair growth. Female hormones, Oestrogens, increase hair growth and optimize the period of growth. Androgens, on the other hand, adversely affect the hair growth cycle.

When you experience hormonal imbalance, your body produces excessive androgens. These hormones cause hair fall. If you have predisposed genes to regulate the follicle activity, you will suffer more than other people.


Stress can lead to various health problems, including human hair loss. Severe stress causes hormonal imbalance, which later leads to hair thinning.

The Basics Of Human Hair Loss – 7 Surprising Reasons

Stress cause hair loss. 

What’s more, prolonged stress can also trigger problems with scalp such as dandruff. People with anxiety tend to alter their eating habits, thus affecting the digestive system. All of these are detrimental to hair growth.

Vitamin deficiency

Daily diets are essential for many reasons. Without a balanced source of nutrients, you will likely suffer from hair thinning.

B12, among many, has a significant effect on your hair. A lack of B12 will reduce the number of red blood cells. As these cells carry less oxygen to your tissues, the hair follicles get weakened and lead to hair loss.

Vegans, with a diet of only vegetables, are likely to encounter B12 deficiency. This vitamin exists only in animal proteins.


Women when entering the menopause experience hair loss. The change in hormones has a visible effect on their hair. As you get older, your hair gets finer. And hair loss is just an unavoidable part of the aging process.

Weight loss

Weight loss can also lead to excessive human hair loss. Depending on the scale of your weight loss, your hair also reacts the same.

People who have gone through dramatic weight loss also reported experiencing hair thinning. Weight loss in a short amount of time tends to cause more hair fall than that of an extended period.

Iron deficiency

There are two ways that a lack of iron can be detrimental to your hair growth. First of all, iron deficiency has a negative impact on red blood cells. When the cells fail to carry oxygen to the tissues, the follicles get weakened.

Secondly, iron is an essential contributing factor to hair cell protein. Without this specific protein, your hair strands can’t stay long on your scalp.

Hypothyroidism and hyperthyroidism

Hypothyroidism and hyperthyroidism both refer to the imbalance of the thyroid gland.

This gland is in charge of our body’s metabolism. It regulates the protein production as well as the use of oxygen in different tissues.

When external or internal factors affect the normal function of the thyroid imbalance, thus trouble hair follicles.

The bottom line

Though human hair loss is everybody’s daily struggle, the reasons of this problem can be various. If you notice your hair start to fall and doesn’t grow back, you need to find out why.

Once you know what causes hair fall, only then you can process to proper treatments.

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